Boston Marathon F55-59: Dembeck Runs Down the Field

By MyRace AIApril 21, 2025Official site ↗
  • Jennifer Dembeck won the F55-59 age group in 2:56:57 (6:45/mi), the only finisher in the group to break 3 hours.
  • Dembeck climbed from 369th to 233rd among women at the midpoint, then held firm — a relentless second-half advance through a field of nearly 1,000 women 55–59.
  • Susan McDonald and Patty Monge separated by just 1:57, finishing 2nd (3:05:09) and 3rd (3:07:06) respectively.
  • The top 20 in the F55-59 group ranged from 2:56:57 to 3:20:30 — a 23-minute spread across a deep, competitive field of 994 finishers.

Jennifer Dembeck came to Hopkinton with a plan, and it showed. She ran the first half conservatively enough to sit 369th among women at 5K, then spent the rest of the race picking people off. By the halfway point she'd moved up to 235th among women, and she held that ground through Heartbreak Hill and beyond, ultimately finishing 254th among women — a net gain of over 100 places from where she started. Her 6:45/mi average held up all the way to Copley Square, and the sub-3:00 finish gave her the F55-59 title by more than eight minutes.

Behind her, the race for 2nd and 3rd told a different story. Susan McDonald came out fast — she was 166th among women through 5K, posting the 355th-fastest women's split on that opening segment — but the pace took its toll. She faded steadily through the middle miles, settling into 616th among women by the finish, though she still held 2nd in the age group in 3:05:09 at 7:04/mi. Patty Monge ran the opposite race, grinding from 874th among women at 5K and steadily working her way forward, including the 677th-fastest women's split from the half to 25K. She crossed in 3:07:06, good for 3rd.

Elizabeth Maguire (4th, 3:09:05) and Chunhua Liu (5th, 3:12:11) rounded out the top five, with Liu and Rachel Kamb (6th, 3:12:29) separated by just 18 seconds. The middle of the leaderboard got crowded fast: four women — Kathryn Dahir (11th, 3:18:09), Catrina Denker (12th, 3:18:21), Stephanie Dyer (13th, 3:18:30), and Therese Anderbro (14th, 3:18:35) — finished within 26 seconds of each other. On a point-to-point course from Hopkinton to Copley Square on Patriots' Day, 994 women in their mid-to-late 50s earned their finish. Dembeck earned the top spot.

The course

Course map — Boston Marathon
456 ft range ≈ 2 redwood trees (300 ft each)×2469 ft13 ft013 mi26 mi
26.2 miles · 945 ft elevation gain · 469 ft max elevation
The course · start finish · © Mapbox © OpenStreetMap
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