Marathon Race Conversion Chart

Estimate your current marathon fitness based on shorter race distances

The chart in the downloadable PDF below shows what performance level in shorter race distances is equivalent to a given marathon performance level.

Importantly, this chart was developed using race results from marathoners who competed at shorter distances during the same racing season as their marathon. So, this chart predicts significantly slower marathon times for a given 5k or 10k performance when compared against conversion charts that use lifetime PRs.

Also, remember that this chart predicts how average runners who do average training will run in the marathon. With better-than-average training, you will be able to convert up much better than an average runner.