Defending champion Rita Jeptoo leads an elite women's field in the Boston Marathon that also includes American challengers.
Defending champion Lelisa Desisa leads an elite men's field in Boston that also includes dominant Africans and several top Americans.
Ryan Hall was once America's best distance runner, and with injuries behind him and training in Ethiopia under his belt, he's ready to return to form in the Boston Marathon.
The 4.15 STRONG support group has helped survivors of last year's Boston Marathon bombings find strength in training for this year's race.
The Red Cross and Boston Athletic Association have enhanced the medical presence at the Boston Marathon, including larger tents, added personnel, communication contingencies and health-based runner tracking.
The field for the London Marathon is stacked and Roger Robinson breaks down a field that boasts the world record holder and five of the 10 fastest marathoners in history.
Desiree Linden was seconds away from winning the Boston Marathon in 2011, and after some setbacks she's trained in Kenya and is ready to end the American drought in Boston, writes Peter Gambaccini.
Kenyans Geoffrey Mutai and Sally Kipyego captured NYC Half Marathon titles, while Olympic medalist Mo Farah overcame a fall to finish second among the men.
Track world champion Mo Farah is ready to take on rival Geoffrey Mutai in the NYC Half Marathon, writes Matt McCue.
Defending champs Lelisa Desisa and Rita Jeptoo will face elite competition from both international and American runners in this year's Boston Marathon, writes Scott Douglas.
Race security will remain tight and could get even tighter, though runners are still flocking to events, writes Alison Wade.
Former college track champion Becky Wade embarked on a yearlong running journey that has turned her into America's most promising young marathoner, writes Peter Gambaccini.
Geoffrey Mutai and Priscah Jeptoo claimed the men's and women's titles, respectively, at the 2013 New York City Marathon
Runner's World breaks down the favorites, the challengers and the top Americans in the 2013 New York City Marathon.
New York runners have stayed strong since Superstorm Sandy and are looking forward to getting back on the NYC Marathon course.
New York Marathon CEO Mary Wittenberg says plenty of lessons were learned after the cancellation of the 2012 marathon, and that this year's event will be better.