Kevin Hanson says the 20-mile long run is more tradition than physiology. His Hansons Marathon Method caps long runs around 16 miles, prioritizing consistent weekly mileage and quality sessions to build marathon-ready strength on tired legs.
For decades, marathon folklore has treated the 20-mile long run as sacred. But coach Kevin Hanson argues that the number may be more tradition than science.
Hanson, co-founder of the Hansons-Brooks Distance Project and owner of Hansons Running Shops, recalls reading European and Japanese training plans as a teenager and noticing that many capped long runs at 30 kilometers, about 18.6 miles.
The fixation on 20 miles in the US, he says, appears to stem from its round-number appeal rather than hard physiological evidence.
His alternative, known as the Hansons Marathon Method, typically caps long runs at 16 miles for most runners. The focus shifts from a single grueling workout to cumulative weekly mileage, often building toward 60 miles per week across six days of running.
The philosophy is simple: no one workout should be so exhausting that it demands a full day off before or after.
Instead, runners train on moderately fatigued legs, simulating the strain of the marathon’s later miles. By keeping the long run under 50% of total weekly mileage, the plan mirrors how elite athletes distribute their workload.
Two weekday quality sessions, including speed work and marathon-pace tempo runs, help runners dial in pacing and avoid the common mistake of starting too fast on race day.
Hanson emphasizes that consistency matters more than mileage mythology. If a 20-miler works, stick with it, but commit fully to whatever structure you choose.
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