How Much Should You
Really Run? The Truth
About Training Volume

The most common question I get from runners is some version of "how many miles per week should I be running?" It's the wrong question — but it's worth understanding why, and what the right question actually is.

Training volume matters. But it's not the primary driver of marathon performance. The quality of your training, the distribution of your effort, and the consistency of your build matter far more than whether you're logging 50 miles per week versus 60.

What the Research Actually Shows

Studies on marathon performance consistently show that weekly mileage correlates with performance up to a point — but the relationship is mediated by several factors including running economy, injury history, recovery capacity, and workout quality. Simply adding miles without purpose produces diminishing returns rapidly.

What separates elite marathoners from recreational runners isn't just volume — it's the quality and distribution of that volume. Elite athletes run 80–120+ miles per week, but the majority of those miles are run at genuinely easy effort (conversational pace), allowing for quality in the workouts that actually drive adaptation.

Volume Benchmarks by Goal Time

Here are the approximate training volume ranges I work with for athletes at different goal levels. These are peak weekly mileage targets for the training block — not averages across the full build:

These are guidelines, not mandates. An athlete who trains consistently at 50 miles per week with excellent quality workouts will typically outperform a 70 mpw runner with poor workout execution and inconsistent recovery.

The Distribution Problem

Volume is meaningless without proper distribution. The most common mistake I see in intermediate runners is running too many miles at "moderate" effort — not easy enough to be aerobic base work, not hard enough to be quality work. This is the grey zone that generates fatigue without driving adaptation.

The framework I use with all coached athletes is polarized intensity distribution:

• 80% of miles at genuinely easy, aerobic pace — You should be able to hold a full conversation. If you can't, slow down.
• 10–15% at threshold or marathon pace — Structured workouts, cruise intervals, tempo runs, goal-pace marathon efforts.
• 5–10% at high intensity — VO2 max intervals, fast repeats, race-specific efforts. Used sparingly and purposefully.

Building Volume Safely

Volume increases should be gradual. The 10% rule (increase total weekly volume by no more than 10% per week) is a commonly cited guideline that holds up in practice. More importantly:

• Build for 3 weeks, then take a down week at 70–80% of your peak volume before building again
• Never sacrifice sleep or recovery to fit in more miles
• If quality workouts begin to suffer, volume is likely too high — reduce easy miles first
• Injury history is the most important individual constraint on volume. Work within it.

The Bottom Line

Stop optimizing for mileage as a primary metric. Optimize for consistency, quality, and recovery. The runner who trains at 55 mpw for 16 weeks without interruption will almost always outperform the runner who attempts 70 mpw, gets injured at week 9, and limps through the final 7 weeks. Sustainable, intentional volume beats maximum volume every time.

If you want help determining the right volume and structure for your specific goal, apply for 1:1 coaching here.