The Americans will go against a strong international field at the Rock 'N' Roll Philadelphia Half Marathon.
The top three finishers in both the men’s and women’s races will represent the United States in the marathon this summer in London.
Oregon Track Club teammates taking part in final tune-up for Olympic Marathon Trials.
It's going to be a who's who of ultrarunning all-stars in San Francisco on Saturday.
XTERRA national champions will both race at Kualoa Ranch next weekend.
Many Olympic Trials qualifiers using the race as a tune-up.
Meb returns to try and win his third straight Dodge Rock 'n' Roll San Jose Half Marathon.
Defending champion Matthew Kisorio leads a loaded lineup.
Defending champs, along with other ultrarunning stars, will be on the starting line.