Racing frequently can be risky, but there are also lots of potential rewards to this approach.
The 41-year-old clocks 1:09:36 to finish third at the Rock 'n' Roll Philadelphia Half Marathon.
The 39-year-old finished second at the inaugural event.
Two professional coaches and one of America's top marathoners share their best advice.
Take these top tips to heart heading into your next ultra.
Want to race Boston next April? There's still time to qualify!
The 2016 Olympic hopeful is part of a competitive field at the Rock 'n' Roll Virginia Beach Run Festival.
The 31-year-old is healthy again and gearing up for the Rock 'n' Roll Philadelphia Half Marathon on September 21.
The 29-year-old Eggleston may be America's top young marathoner despite his unusual path.