There are lots of ideas, but nothing has taken hold.
According to Running USA's annual report, almost 2 million people finished half marathons in the U.S. last year.
Women are completing the 13.1-mile distance in record numbers.
Runners have the option to honor the legendary Mustang.
Carl Gallegos, 57, finished a half-marathon in 1:56 before collapsing when his heart stopped.
The GoPro Mountain Games serve up high-altitude thrills.
Adding a race or two at the end of your season can be fun, but you have to do it right.
She gave unexpected birth to a baby girl.
Ethiopian Biru Meseret Mengistu takes the women's crown.
13.1-mile distance saw record growth in 2012.