Controlled-pace intervals are a great way to test your run fitness. Photo: John Segesta.

By Liz Hichens
Published Jun 8, 2009

<< Back to Story Open full size in new window.

Controlled-pace intervals are a great way to test your run fitness. Photo: John Segesta.

Controlled-pace intervals are a great way to test your run fitness. Photo: John Segesta.

Liz Hichens

Liz Hichens is the Web Producer of Triathlete.com. She is an Ironman and marathon finisher and fan of all endurance sports.