F50-54 at CIM 2023: Halseth Holds Off Swafford in a Sub-3:07 Showdown

• Amy Halseth wins the F50-54 age group in 3:06:54 (7:08/mi), edging Valerie Swafford by just 21 seconds.
• Swafford ran the fastest early miles — her 5K→10K split ranked 279th among all women — but couldn't sustain the gap to the finish.
• Jennifer Hoogesteger Bayliss rounds out the podium in 3:10:44, more than three minutes back of Halseth.
• 265 women finished in the F50-54 age group, with the top four all breaking 3:15.

The F50-54 race at the 2023 California International Marathon came down to 21 seconds between two San Diego runners. Amy Halseth, 54, crossed in 3:06:54 at 7:08 per mile — a genuinely exceptional effort at any age. But the story of how she got there is worth telling: she started conservatively, sitting around 548th among all women at the 5K mark, and spent the entire race climbing. By the final stretch she had worked her way up to 384th in the women's field — a steady, relentless progression that ultimately proved decisive.

Valerie Swafford, 53, took the opposite approach. She came out flying — her 5K→10K split was among the stronger early segments in the women's field — and held a comfortable position around 304th among women through 10K. But the back half of the race told a different story. Swafford gradually slipped from 304th to 396th in the women's field by the finish, giving up ground mile by mile while Halseth kept coming. The 21-second margin at the tape reflects just how close the chase was, but the momentum belonged entirely to Halseth.

Jennifer Hoogesteger Bayliss of Danville ran a similar arc to Swafford — strong early, fading in the women's field through the second half — but still secured a very solid 3:10:44 for third. Richi Kroupa and Jamie Duncan, both finishing in the 3:14 range, made it five women in the age group under 3:15, with Kroupa posting a notably strong 40K-to-finish split. The depth across the F50-54 field was real: 265 finishers, a podium under 3:11, and a winner who ran the race exactly backwards — from the back to the front.