San Francisco Half Marathon: Cullen Seizes the Lead and Never Looks Back in F20-24

• Margie Cullen wins F20-24 in 1:27:29 (6:40/mi), posting the fastest women's split on the 6.43M→8.3M segment to cement a lead she never relinquished.
• Nicole Ticea finishes 2nd in 1:32:31 (7:03/mi), fueled by the 3rd-fastest women's split on the 2.2M→5.7M stretch — a 5:02 gap back at the line.
• Anne-Claire Tande rockets from 21st among women at the first checkpoint to 8th by the finish, claiming 3rd in 1:35:01 — the most dramatic climb in the F20-24 field.
• Claire Stewart and Sara Frigui separated by just 2:40 at 4th (1:35:24) and 5th (1:38:04), with 195 more finishers rounding out a deep 215-runner field.

Margie Cullen of Berkeley ran the kind of race that looks inevitable in hindsight but was anything but. She sat 2nd among women through the first half of the course, patient and controlled at 6:40/mi through the fog-draped San Francisco streets. Then came the 6.43M→8.3M segment — and Cullen unleashed the fastest women's split on that stretch, vaulting to the front of the women's race and staying there all the way to the tape. Her 1:27:29 finish was a commanding statement in a field of 215.

Nicole Ticea of Palo Alto made her move earlier. She ran the 3rd-fastest women's split on the opening 2.2M→5.7M segment, climbing from 5th to 3rd among women in the process, and by the midpoint she had worked her way up to 2nd — a position she held through the finish in 1:32:31. The 5:02 gap to Cullen tells the story of how decisive that middle segment was; once Cullen surged, the race for the win was effectively over.

The most eye-catching trajectory in the F20-24 field belonged to Anne-Claire Tande of San Francisco. She was 21st among women at the first checkpoint — deep in the pack — but ran the 8th-fastest women's split on the 2.2M→5.7M stretch and kept climbing steadily through every subsequent segment, crossing in 1:35:01 to claim 3rd. Claire Stewart (1:35:24, 4th) was just 23 seconds behind her, with Stewart posting the 6th-fastest women's split on the 5.7M→6.43M segment in a push that nearly caught Tande but fell just short.