The "Stadium to the Sea" marathon, in pictures.
A chilly morning (for South Florida standards) led to ideal running conditions.
A January race along the Pacific coastline of California.
A record-breaking morning in Texas.
An ultramarathon among the alligators in Texas.
More than 30,000 runners participated on the island of Oahu.
The prestigious ultramarathon gave runners a long look at the Bay Area's beauty.
The race featured perfect conditions and a star-studded half marathon field.
Some of the top high school cross country runners in the nation gathered in Portland.
A winter trail run just outside of Scottsdale, Arizona.