eval set · question 8 of 22 · graded by hand
Does higher weekly running volume improve marathon finish time?
Higher weekly/monthly running volume is consistently associated with faster marathon finish times across multiple studies of elite and recreational runners. 1 2 3 4
The benefit of training volume on marathon time may depend on individual run distances exceeding certain thresholds (e.g., ≥21km longest run or ≥10km average run). 4
Faster marathon runners tend to achieve higher volume mainly through more easy (low-intensity) training and a pyramidal intensity distribution rather than just more hard sessions. 2 5 6
Better marathon performance is associated with higher training volume, low-intensity emphasis, and limited high-intensity volume (≤5%). 5
Reducing running frequency in the final months before a race, while maintaining other volume/quality metrics, is also associated with faster times. 3
What we can't tell you
- Whether there is a specific volume threshold beyond which further increases stop helping or become harmful is not well defined.
- Effects of volume on injury risk or long-term health are not addressed here.
- see a professional
Sources
Increases in various training parameters (weekly running distance, number of weekly runs, maximum weekly distance, long runs ≥32km, training pace, longest run, and weekly running hours) are associated with faster marathon finish times in elite and recreational marathoners.
pop. Elite and recreational marathon runners (42.2km); 137 cohorts from 85 studies, 25% female · direction Positive (increased training parameters associated with faster finish times) · design Systematic review and meta-regression of observational and interventional studies · strong
An evaluation of the training determinants of marathon performance: A meta-analysis with meta-regression. (2019) · doi 10.1016/j.jsams.2019.09.013
Faster marathon runners accumulate larger training volumes primarily through increased Z1 (easy) training and adopt a pyramidal training intensity distribution more frequently than slower runners.
pop. Marathon runners across performance levels (151,813 marathons completed by 119,452 runners), analyzed 16 weeks before race; fastest subgroup marathon time 120-150 min. · direction Negative - faster marathon times associated with higher training volumes and greater proportion of Z1 training. · design Large observational cohort analysis · strong
The Training Intensity Distribution of Marathon Runners Across Performance Levels. (2025) · doi 10.1007/s40279-024-02137-7
Higher running distance per week, running sessions per week, quality sessions per week, and cross-training in the 4-0 months pre-race, combined with decreased running sessions per week in the final 4 months, are associated with faster Boston Marathon race times.
pop. Adult Boston Marathon registrants (917 athletes: 495 female, 422 male; mean weekly distance 64.4-67.6 km/week) · direction Positive: higher volume and quality sessions associated with faster times; decreased training frequency in final 4 months associated with faster times versus maintained/increased frequency · design Cross-sectional observational study with linear regression · weak
Training Volume and Training Frequency Changes Associated with Boston Marathon Race Performance. (2026) · doi 10.1007/s40279-025-02304-4
Monthly training volume is the most important factor in predicting marathon time, but its influence is only significant if running distance per workout exceeds a certain threshold (≥21 km for longest running distance and ≥10 km for average running distance).
pop. Male recreational marathon runners (n=587, 494 finishers) participating in the Hokkaido Marathon 2017 · direction Negative (higher training volume associated with faster marathon times), conditional on running distance per workout exceeding ≥21 km LRD or ≥10 km ARD · design Cross-sectional observational study · weak
Interactions between monthly training volume, frequency and running distance per workout on marathon time. (2023) · doi 10.1007/s00421-022-05062-7
Marathon finishers with better performance show higher training volume, higher shares of low-intensity training, continuous velocity increases, and high-intensity runs ≤5% of overall volume.
pop. Marathon finishers (n=6,771) using fitness app data · direction positive (better performance associated with higher volume, low-intensity emphasis, and structured intensity distribution) · design retrospective cohort analysis · weak
Retrospective Analysis of Training and Its Response in Marathon Finishers Based on Fitness App Data (2021) · doi 10.3389/fphys.2021.669884
Sub-elite marathon training plans in the final 12 weeks follow a pyramidal intensity distribution with the majority of volume in zone 2, with recommended weekly running distances varying by training volume category (43-108 km/week).
pop. Sub-elite marathon runners (92 publicly available training plans analyzed) · direction Positive (pyramidal structure with 65.6% in zone 2 recommended across all volume categories) · design Systematic review and quantitative analysis of training plans · weak
Quantitative Analysis of 92 12-Week Sub-elite Marathon Training Plans (2024) · doi 10.1186/s40798-024-00717-5