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Journal · Trail · April 11, 2026

Ryan Sullivan and Fiona Pascall win the Lake Sonoma 100K; Robbie Simpson takes the 50K

Sullivan ran 8:36:09 and Pascall 10:13:24 on the Lake Sonoma trails in Healdsburg, California; Britain's Simpson won the 50K in 3:39.

Photograph: Robbie Simpson in the 2017 London Marathon, by Katie Chan, CC BY-SA 4.0, via Wikimedia Commons

The Lake Sonoma races were run on Saturday in Healdsburg, California, on the trails above the reservoir in Sonoma County. The weekend now has a 100K, a 50K and the Trail Sisters women's half marathon.

Ryan Sullivan won the 100K in 8:36:09. Fiona Pascall of Britain was the first woman in 10:13:24, with Emily Hawgood second in 10:31:06. UltraSignup's all-time list for the 100K now has both at the top: Sullivan ahead of Daniel Jones's 8:59:58 from 2022, and Pascall and Hawgood ahead of every woman who has run it before.

The 50K went to Robbie Simpson of Britain in 3:39. Hannah Allgood was the first woman in 4:19. Evelin Ramirez won the Trail Sisters half in 1:54.

Lake Sonoma has been a fixture of the early Californian season for years, and its results are usually a good read on who has had a winter.

Not a headline race, this one, but a hundred kilometres of dirt in April is still a hundred kilometres of dirt. The names at the top will turn up again in the summer.

Sources: iRunFar; UltraSignup.

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