Updated May 2026. Written by the Upwell Health Collective clinical team — physiotherapists, exercise physiologists, and strength coaches with a combined 40+ years working with runners from first-timers to sub-2:30 marathoners. Clinically reviewed May 2026. Next review November 2026. For educational purposes only.
On the 12th of October 2019, at the Prater park in Vienna, Eliud Kipchoge ran 42.195 kilometres in 1 hour, 59 minutes, and 40.2 seconds. He became the first human being to run a marathon in under two hours. He averaged 2 minutes and 50 seconds per kilometre — a pace that most recreational runners cannot sustain for a single kilometre — for 42 consecutive ones.
The Breaking2 project that preceded it found that a sub-2-hour marathon requires a VO2 max of 75 to 85 millilitres per kilogram per minute, a running economy of 190 millilitres or fewer per kilogram per kilometre at 21 kilometres per hour, and the ability to sustain 90 to 94% of VO2 max at marathon pace — a fractional utilisation that represents the highest end of human physiological capacity (Grivas, Eur J Appl Physiol, 2026).
You are almost certainly not going to run a sub-2-hour marathon. But you can run faster than you currently do. Much faster. The same three variables that separated Kipchoge from every human being who had ever lived — VO2 max, lactate threshold, and running economy — are the same variables that separate the runner you are today from the runner you are capable of becoming. They are all trainable.
This guide is for every runner. The person who wants to break 30 minutes for a 5K. The one chasing a 4-hour marathon. The runner who has been stuck at the same pace for two years and doesn’t understand why. The beginner who wants to start without getting injured. The master runner who is convinced their best days are behind them but suspects they might be wrong.
Before getting into the specifics of any single training variable, it helps to have a map of the entire system. At Upwell, we use a framework called the 5 Levers to give runners a complete, prioritised picture of what actually drives running performance — and where their individual investment of time and energy will produce the greatest return.
The 5 Levers are not equally weighted for every runner. The lever that will move you the most depends on where you currently are. A beginner’s biggest lever is Lever 1. An experienced marathon runner who has plateaued is almost always being held back by Lever 3 or Lever 4.
The Upwell 5 Levers™
Lever 1 — Engine Size (VO2 Max)
Your aerobic ceiling. The maximum oxygen your cardiovascular system can deliver to working muscles. Highly trainable in beginners; increasingly fixed as training age increases. Primary intervention: high-volume easy running and VO2 max intervals.
Lever 2 — Working Range (Lactate Threshold)
How close to your ceiling you can race. The pace at which blood lactate accumulates faster than it can be cleared — and the most trainable performance variable across a lifetime of running. Primary intervention: tempo runs and cruise intervals at threshold pace.
Lever 3 — Efficiency (Running Economy)
How much oxygen you consume at a given pace. The runner who uses less oxygen for the same speed can run faster at the same physiological cost. Primary intervention: strength training, plyometrics, and cadence optimisation.
Lever 4 — Durability (Resilience Under Fatigue)
How well you maintain Levers 1–3 across the full duration of a race. The runner who maintains running economy and pace at kilometre 38 of a marathon — when most people are breaking down — wins on durability. Primary intervention: strength training (the Zanini 2025 RCT found a 35% improvement in TTE and superior late-race economy) and race-specific long runs at marathon pace.
Lever 5 — Execution (Race Day and Recovery)
How effectively you convert training fitness into race performance. Pacing strategy, fuelling, taper execution, sleep, HRV monitoring, and mental skills. A runner who has maximised Levers 1–4 but executes poorly on race day leaves minutes — sometimes tens of minutes — on the table. Primary intervention: race-specific rehearsal, nutrition periodisation, and sleep optimisation.
Throughout this guide, every chapter maps back to one or more of the 5 Levers. When you read about threshold training, you’re reading about Lever 2. When you read about strength training, you’re reading about Levers 3 and 4 simultaneously. The framework gives you a way to prioritise — to know not just what to do, but why it matters for you specifically.
Marathon performance can be predicted, physiologically, from three variables. Together, they account for approximately 72% of the variability in marathon performance between runners (Zanini et al., Scand J Med Sci Sports, 2025).
VO2 max is the maximum volume of oxygen your body can consume during intense exercise, expressed in millilitres per kilogram of body weight per minute. Elite male marathoners typically have VO2 max values of 70 to 85 mL/kg/min. Recreational runners typically sit between 35 and 55. A 2025 systematic review confirmed that lactate threshold correlates with marathon finish time at r=0.91 — substantially stronger than VO2 max alone at r=0.63 in recreational runners. The ceiling matters. But how close to that ceiling you can race matters more.
Lactate threshold is the exercise intensity above which blood lactate accumulates faster than it can be cleared. It is the most important single performance variable for distances from 10 kilometres to the marathon.
LT1 (aerobic threshold): Approximately 2 mmol/L of blood lactate. Marathon pace for most runners. Training near LT1 builds aerobic foundation, improves fat oxidation, and makes easy running more efficient.
LT2 (lactate threshold): Approximately 4 mmol/L. 1-hour race pace: between 10K and half-marathon pace for most runners. A landmark study found that 12 weeks of twice-weekly tempo sessions improved LT by 12%, compared to 6% in VO2 max-focused groups.
Running economy is the oxygen cost of running at a given speed. Two runners with identical VO2 max values can differ by 30% in marathon performance based on running economy differences alone. A 2024 systematic review (Sports Med) identified the key biomechanical correlates: higher cadence (r=-0.20), smaller vertical displacement (r=-0.31), and higher leg stiffness (r=-0.31).
T2 = T1 × (D2/D1)^1.06 (Riegel’s formula). Accurate to within 1 to 3% for well-trained runners predicting between similar distances. For most runners, doubling the half marathon time and adding 8 to 12 minutes produces a reasonable marathon estimate. The most accurate predictor of your marathon potential is a recent half marathon race run to maximum effort.
Here is the most counterintuitive finding in running science: the athletes who run the fastest also run the slowest. Elite endurance athletes consistently distribute approximately 80% of their training at low intensity — below LT1, at conversational pace — and 20% at high intensity.
A 2024 systematic review (Sports, December 2024) of 14 studies found that polarised training is effective for enhancing VO2 max, VO2 peak, and work economy in endurance athletes. Elite marathoners specifically tend to use a pyramidal model — 76 to 86% in Zone 1 (Casado et al., IJSPP, 2022).
What does genuinely easy mean? A pace at which you can hold a full conversation without effort. For many runners, this is 60 to 75 seconds per kilometre slower than their 5K race pace. Most recreational runners run their easy days too hard. This middle-intensity grey zone is the single most common reason experienced runners plateau.
Threshold training sits at LT2 — approximately 1-hour race pace. Comfortably hard: you could speak a few words but not hold a conversation. Heart rate at approximately 85 to 90% of maximum. Blood lactate at 4 mmol/L.
Tempo runs (continuous): 20 to 40 minutes at LT2 pace. The classic. Beginners start at 15 to 20 minutes and build progressively.
Cruise intervals: 3 to 5 repetitions of 8 to 15 minutes at LT2 pace, with 1 to 2 minutes easy jogging recovery. Total threshold volume: 24 to 60 minutes per session.
Progressive tempo: Starting 30 to 45 seconds per kilometre slower than LT2 and building to LT2 or beyond over the run. Develops the ability to run faster as fatigue accumulates — the physiological signature of a negative split marathon.
The most common error: Running threshold sessions too fast. A threshold session run 15 seconds per kilometre too fast crosses into VO2 max territory, produces more fatigue, and produces different adaptations. Recreational runners: 1 to 2 threshold sessions per week, 20 to 50 minutes of quality volume each.
VO2 max intervals are performed at 90 to 95% of VO2 max pace — approximately 3K to 5K race pace. A 2025 study (Frontiers in Sports and Active Living) confirmed that longer intervals of 3 to 5 minutes maximise time spent above 90% VO2 max. Classic protocols: 6 × 1000m at 5K pace (2-minute recovery), 5 × 1200m (2:30 recovery), or 4 × 2000m at 6K–8K effort (3-minute recovery). Never consecutive days. Always after an aerobic base has been built.
A 2025 systematic review (Cureus, 18 studies, 2009–2025) found that a moderate 5 to 10% increase in running cadence consistently produces significant biomechanical improvements. A 12-month gait retraining programme incorporating cadence modification produced a 62% reduction in injury risk in novice runners. Practical target: most runners benefit from cadence at or above 170 steps per minute. The primary determinant of injury risk is where the foot lands relative to the body’s centre of mass — not which part of the foot lands first.
Zanini et al. (Med Sci Sports Exerc, 2025) found that 10 weeks of maximal strength and plyometric training improved running economy durability and extended time-to-exhaustion by up to 35% compared to endurance-only controls. Hip and core strengthening specifically produced 39% lower injury prevalence (BJSM, 2024).
Hip abductor and external rotator complex: Romanian deadlifts, hip thrusts, single-leg squats, lateral band walks, banded clamshells, Copenhagen adductor exercises. 2 to 3 sessions per week, 3 to 4 sets, 6 to 12 repetitions.
Calf and Achilles: Single-leg heel raises progressing to loaded. Heavy slow resistance protocol: 3 sets of 15 reps at 6-second tempo, building to 3 sets of 6 reps at heavy load.
Posterior chain: Nordic hamstring curl and Romanian deadlifts. Most runners are chronically underloaded here despite it being the primary propulsive engine of running.
Core: Pallof press, dead bugs, quadruped bird-dogs, side and prone planks. Maintains pelvic position across 40,000+ ground contacts in a marathon.
Timing: Strength sessions on the same day as quality running (after, never before). Maintained year-round — never removed when marathon volume increases.
An analysis of 92 sub-elite marathon training plans (PMC, 2024) found high-volume plans averaged 5% weekly build during the build phase, followed by 22 to 31% weekly reduction during taper. The final race week showed 50% reduction.
Phase 1 — Base (12 to 16 weeks before peak): Build aerobic volume. Easy running dominates (80%+). Maintain strength training. No intensive quality work.
Phase 2 — Build (8 to 12 weeks before race): Introduce threshold and VO2 max work. 1 to 2 quality sessions per week. Long run builds toward race-specific distances.
Phase 3 — Race-specific (4 to 6 weeks before race): Race-pace specific work. Long runs include marathon-pace segments. Strength training reduces to maintenance.
Phase 4 — Taper (2 to 3 weeks before race): Volume reduces 40 to 60%. Intensity maintained throughout. Never place two hard sessions on consecutive days. Recovery is where adaptation occurs.
The research supports long runs of 29 to 35 kilometres as the upper end for most recreational marathoners. One of the strongest predictors of hitting the wall is failing to complete at least one long run of 32 kilometres. Long run pace: 60 to 90 seconds per kilometre slower than goal marathon pace. In the race-specific phase, long runs incorporate marathon-pace segments — 24 kilometres total with kilometres 14 to 22 at goal marathon pace.
The taper: intensity maintained throughout keeps the neuromuscular system sharp. Volume reduction of 40 to 60% over 2 to 3 weeks. The taper madness is real — the reduction in volume produces temporary perceived aches and anxiety. Do not add sessions. The fitness is there.
A Frontiers in Physiology study (Grivas, July 2025) found that a negative split is associated with superior race outcomes, better glycogen management, and preserved biomechanical efficiency. The analysis of 1.7 million marathon finishers (Smyth, 2018) confirmed that even pacing produces the most consistent results. Start the first 5 kilometres at 10 to 15 seconds per kilometre slower than goal pace.
More than 40% of recreational marathoners hit the wall — the sudden dramatic performance collapse typically occurring around kilometre 30. Primary risk factors: starting too fast, longest training run below 32 kilometres, inadequate carbohydrate intake. Target 60 grams of carbohydrate per hour minimum. Experienced runners can target 80 to 90 grams per hour using a glucose-fructose mixture (2:1 ratio). Start fuelling within the first 30 to 45 minutes. Drink to thirst, not to schedule.
The gastrointestinal system is trainable. The gut that cannot absorb 60 grams of carbohydrate per hour during a race is not a fixed limitation — it is an untrained system. Regular exposure to high carbohydrate intake during exercise upregulates intestinal carbohydrate transporters and increases gastric emptying rate.
Fuel for the work required (UCI Sports Nutrition Project, Morton et al., IJSNEM, 2025). Carbohydrate intake periodised across the training week:
Protein: 1.6 to 2.2 grams per kilogram per day. Distribute across 4 to 5 meals of 20 to 40 grams each. Train low at low intensity only — high-intensity sessions must always be fuelled.
A narrative review (PMC, July 2024) found that reducing sleep duration from 8 to 6 hours per night for two weeks impairs performance to an extent equivalent to 24 to 48 hours of total sleep deprivation — and critically, the athlete does not accurately perceive how impaired they are. Minimum 8 hours of sleep opportunity per night during heavy training. Sleep consistency matters as much as duration.
HRV: measure upon waking before getting out of bed. Track the 7-day rolling average. Three to five consecutive suppressed readings is signal — reduce volume or intensity until recovery is restored. Cold water immersion (10 to 15 degrees, 10 to 15 minutes) after hard sessions reduces perceived soreness. Avoid CWI immediately after strength training — it attenuates the inflammatory signal required for muscular adaptation.
Running injury rates are stubbornly high. Most runners do not follow evidence-based load management, do not perform adequate strength training, and do not address biomechanical risk factors until injury has already occurred.
1. Load management: Injury risk rose significantly when a single run exceeded 10% of the previous month’s longest comparable session (BJSM, 2025, 5,200+ runners). A step-back week of 20 to 30% volume reduction every third or fourth week is non-negotiable.
2. Hip and glute strength: 39% lower injury prevalence with hip and core strengthening (BJSM, 2024). The highest-leverage injury prevention investment available to a recreational runner.
3. Cadence optimisation: 62% reduction in injury risk with 5 to 10% cadence increase over 12 months (Figueiredo et al., Cureus, 2025). Zero cost.
4. Progressive footwear transitions: Any transition to lower-drop or minimal shoes graduated over 6 to 8 weeks. Never rapid.
5. Listening to the body: This skill is learnable — and working with a sports physiotherapist dramatically accelerates its development.
The five most common running injuries each have a dedicated evidence-based guide in our running cluster:
A meta-analysis (Frontiers in Sports and Active Living, January 2026) found carbon-plated shoes produce mean difference of -5.34 mL/kg/km in oxygen cost. A 2025 systematic review confirmed 2 to 4% improvement in running economy, translating to approximately 1 to 2% improvement in race performance — approximately 5 minutes for a 4-hour marathoner. Transition gradually for runners with pre-existing Achilles or calf issues. Features that deliver genuine training value: cadence tracking, heart rate zone monitoring, GPS pace, and HRV morning monitoring.
Physical capacity sets the ceiling. Mental skill determines how close to that ceiling you perform on race day. Instructional self-talk (“relax the shoulders,” “drive the arms”) improves technical execution under fatigue. Motivational self-talk (“you’ve done the training”) improves endurance. Ultra-endurance athletes who regularly visualise demonstrate 17% higher pain tolerance. A consistent pre-race routine reduces cognitive load, minimises decision fatigue, and creates a reliable sense of preparedness. Establish it in training. Execute it on race day without variation.
One of the most persistent and damaging myths in recreational running is that performance inevitably declines after 40. It does not — not in the way most runners assume. In trained runners who continue to include high-intensity work, VO2 max decline is substantially attenuated — sometimes halved. Strength training is not optional after 40 — it is the primary tool for maintaining performance trajectory. Most recreational masters runners are substantially undertrained relative to their potential. Adding two strength sessions per week and one genuine quality session per week to that programme will produce meaningful improvement regardless of age.
Altitude training (live high, train low) significantly increased haemoglobin (SMD = 0.70, 95% CI: 0.27–1.13) and improved time trial performance compared to sea-level training (Life, Beijing Sports University, 2025). Meta-analyses suggest 4 to 5% performance improvements with LHTL methods. For runners without altitude access: a sauna protocol of 20 to 30 minutes post-training, 4 to 5 times per week for 2 to 3 weeks, replicates many heat acclimatisation adaptations. Sodium bicarbonate (0.3g/kg, 60-90 minutes before high-intensity efforts) acts as a blood buffer for 5K and 10K efforts. Nose breathing during easy runs forces genuinely easy effort — if you cannot breathe comfortably through your nose, you are running too hard.
The injury rate in novice runners is estimated at 13 to 20% in the first year. The primary cause is too much load, too soon, on a body that hasn’t built the structural capacity to absorb it. Cardiovascular fitness improves faster than skeletal adaptation — this is the bone adaptation gap. A 2023 study found only 27.3% of C25K participants completed the programme — injury and too-fast progression were the primary barriers.
Race distance ladder: 5K → consolidate 4 weeks → 10K (8–12 more weeks) → Half marathon (12–16 more weeks) → Marathon (16–24 weeks, with a comfortable half marathon completed first).
Upwell Health Collective sits at 436 Burke Road, Camberwell — in the middle of Melbourne’s most running-active inner east community. We see runners every day of the week: beginners navigating their first injury, sub-3:00 marathoners optimising their mechanics, masters runners in their 50s and 60s who are getting faster not slower, and athletes returning from extended breaks wondering whether they can get back to where they were. The answer to that last question is almost always yes. But it requires the right approach.
You do not need to wait until you are injured. Book an assessment online, or contact our team directly. Early morning and evening appointments available for runners who train before and after work.
Q: How do I know if I’m running my easy days too hard?
A: If you cannot hold a full conversation without noticeable breathing effort, you are running too hard. Heart rate should be below 75% of maximum. If your easy pace is within 60 seconds per kilometre of your 5K race pace, it is not easy.
Q: How much weekly mileage do I need for a good marathon?
A: Runners targeting sub-3:30 to sub-4:00 benefit from peak weeks of 60 to 90 kilometres. The long run is non-negotiable: 30 to 35 kilometres at least once in the build phase.
Q: When should I introduce speedwork?
A: After a genuine aerobic base phase of at least 8 to 12 weeks. The base comes first.
Q: How long does it take to significantly improve marathon time?
A: Measurable improvement typically emerges after 6 to 10 weeks, with significant race time improvements across a 3 to 6 month block.
Q: Can I get faster after 40?
A: Almost certainly yes if you are a recreational runner who has not previously optimised training. Adding strength and quality work almost always produces meaningful improvement.
Q: My knee hurts after long runs. What should I do?
A: Don’t continue at the same volume hoping it resolves. Book an assessment and read our runner’s knee guide.
Q: Is it safe to run every day?
A: For experienced runners with established training bases, daily easy running is manageable. For runners with less than 3 years of consistent running, at least one complete rest day per week is evidence-supported.
Q: What’s the best way to fuel during a long training run?
A: Under 75 minutes: no mid-run fuelling required. Over 90 minutes: 30 to 60 grams of carbohydrate per hour. Practice race nutrition in training. Never try new products for the first time in a race.
Q: Do I need a coach?
A: Not necessarily, but individualised programmes consistently outperform generic ones. If your current approach has produced injury, stagnation, or both, working with a running-experienced physiotherapist or exercise physiologist for a programme review is among the highest-return investments available.
Q: How does altitude training work and can I do it without going to altitude?
A: Altitude training stimulates EPO production and increases red blood cell mass. Without altitude access: post-exercise sauna bathing 4 to 5 times per week for 3 weeks replicates plasma volume expansion benefits with strong emerging evidence for performance improvement.
Q: What’s the single most important thing I can do to become a better runner?
A: It depends entirely on which of the 5 Levers is limiting you. For most recreational runners: run your easy days genuinely easy, add two strength sessions per week, or introduce one weekly threshold session. Which of those three is most important for you is what a clinical running assessment is designed to identify.
This article is for educational purposes only and does not substitute for individual clinical assessment. Information last reviewed May 2026. For personalised assessment, book with the Upwell Health Collective team at 436 Burke Road, Camberwell VIC 3124.