River to River Marathon - IL

River to River Marathon - IL is run in Illinois on May 1, 2027, starting at 8:00 a.m. The marathon (26.2 miles) is the only distance offered, so the entire field covers the same course.

Single-distance marathons tend to draw runners who are there for the distance itself rather than for a festival weekend, which usually means a quieter start line and steadier pacing around you. Come with a 16-week build behind you: a long run every week climbing toward 20 miles, a couple of race-pace efforts each month, and a taper of two to three weeks. Practise your fueling on those long runs so nothing about race morning is new.