Canadian Rachel Hannah runs huge PB at Houston Marathon

Rachel Hannah took more than a minute off her personal best running her third career marathon in Houston on Sunday morning.

Rachel Hannah was the top Canadian at the Chevron Houston Marathon in Texas on Sunday morning finishing sixth overall in a huge personal best time of 2:32:09.

In just her third race at the 42.2K distance, Hannah bested her previous lifetime mark by 81 seconds.

She debuted at the Ottawa Marathon in May (2:33:30) to qualify for the Pan Am Games in Toronto where she finished third overall in 2:41:06 (upgraded from fourth after the winner was busted for doping).

Hannah’s 5K splits: 17:44, 17:42, 17:56, 21:44 (6.1K), 14:26 (3.9K), 18:20, 18:23, 18:22, 7:32 (2.2K)

RELATED: World standards for Canadians at Houston half-marathon.

Fellow Canadian Dayna Pidhoresky got after it early throwing down a 17:13 5K through the 10K (34:52) mark, well below 2:29:50 Olympic standard pace.

RELATED: Canadian Rachel Hannah to receive upgraded Pan Am bronze this Saturday.

Unfortunately the Vancouver resident was forced to drop out just before 30K citing stomach issues (Pidhoresky went through the halfway point in 1:14:50).

Calum Neff was the top Canadian male in the race on Sunday running 2:23:19.

Meanwhile, plenty of Canadians achieved the IAAF World Half-Marathon Championship standard running the Houston half on Sunday.

RELATED: Rachel Hannah’s incredible marathon debut.