British Olympian Callum Hawkins will lead a group of seven men chasing the sub-60 barrier and while Ethiopia's Worknesh Degefa has her sights set on a course record during the eighth edition of the Mattoni Olomouc Half Marathon on June 24.

23-year-old Kenyan Peres Jepchirchir broke the old half marathon world record by three seconds on Thursday night in the United Arab Emirates, closing hard to finish in 65:06. Previous No. 2 all-timer Mary Keitany ran 65:13, bumping her back to No. 3 all-time but breaking her old PR by 37 seconds.

From Kip Litton to the Manhattan Bandit, all of these cheating scandals can seem the same--a brazen man chronically cuts courses and denies it. But the ​Washington Post ​has a new one with a few fascinating twists.​

By David Monti, @d9monti

By David Monti, @d9monti

Defending champion Mary Keitany of Kenya headlines the fastest field assembled for a women’s race in the world this year, while Kenya’s Stanley Biwott will face a stiff challenge in his tune up for the Rio Olympic marathon this summer during the seventh edition of the Mattoni Olomouc Half Marathon on June 25.

All eyes will be on legendary Kenyan Geoffrey Mutai as he looks to regain past championship form in his first race following a seven-month layoff at the Mattoni České Budějovice Half Marathon on June 4.

By Jeff George

Prolific road racer Caroline Kilel of Kenya will seek to score her first half marathon victory in almost two years while four men chase the elusive sub-60-minute mark during the Mattoni Karlovy Vary Half Marathon on May 21.

By Dave Hunter

Will Lagat crush his half debut like Ryan and Galen?

Heading into the Houston Half Marathon I was more excited to watch my teammates run the Olympic Marathon Trials the day before than to actually run my own race. That said, my training was going very well and the Houston Half Marathon gave me a great opportunity to test that fitness.