Yalemzerf Yehualaw runs 1:03:44, breaks half-marathon world record in Northern Ireland

Yehualaw is the first woman to run under 1:04

Linkletter nails his first half-marathon at Houston

Linkletter was 16 seconds off of the Canadian record in his half-marathon debut

Three seconds cost the second place runner $75,000 at the Bahrain Night Half

The Bahrain Half-Marathon has one of the biggest prizes purses in road racing, and seven seconds meant the difference between $100,000 and $10,000