Fastest marathons in Iowa
The Iowa marathons where finishers run fastest, ranked by median finish time over each race's last three years of results.
We don't have enough marathon results in Iowa to rank yet. See the national list
Fastest marathons by state
Common questions
How are the races ranked?
By the median finish time of each race's last three years of results: the time half its finishers beat. A race needs at least 200 finishers to be ranked. It reflects the course, the usual weather and who enters: races that draw serious runners rank high.
Which marathon is best for a personal record?
Look for a flat course, a cool race morning and a field near your pace, so you have people to run with. The races here are where finishers run fastest; check each one's course and weather, shown in its listing.
Chasing a Boston qualifier? See the marathons where the most runners qualify →