Home / SF Bay Area / Winter 2026-27 / Ultramarathons
Winter ultramarathons near the Bay Area (2026-27)
Updated
5 ultramarathons are on the calendar near the Bay Area in winter 2026-27, starting with Woodside Ramble on Saturday, December 19 in Woodside. That covers December to February. 4 of them publish an upcoming price increase, so signing up early saves money.
All winter races5K races (28)10K races (25)Half marathons (22)Marathons (3)Ultramarathons (5)Trail races (12)
By date
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Reg. closed
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New Year's One Day
Thu Dec 31 · 8:55 AM · San Jose · South Bay & San Jose
5K30 miles50 miles100 miles
from $90Goes up Dec 1 -
Spasm Crystal Springs Trail Run
Sun Jan 17 · 7:50 AM · Woodside · Peninsula
5 milesHalf marathon22 milesMarathon50KTrail
from $60Goes up Jan 11 -
Golden Gate Trail Run
Sat Feb 6 · 7:50 AM · Sausalito · Marin
2 miles8KHalf marathon30KMarathon50KTrail
from $60Goes up Jan 31 -
Montara Mountain Trail Run
Sat Feb 20 · 7:45 AM · Pacifica · Peninsula
2 miles10KHalf marathon20.7 milesMarathon50KTrail
from $60Goes up Feb 14
Other seasons near the Bay Area
Quick answers
How many ultramarathons are near the Bay Area in winter 2026-27?
5 ultramarathons are listed near the Bay Area in winter 2026-27. The first is Woodside Ramble on Saturday, December 19 in Woodside, and the last is Montara Mountain Trail Run on February 20.
What is the cheapest ultra near the Bay Area in winter 2026-27?
Spasm Crystal Springs Trail Run on January 17 has the lowest listed entry fee: $60. Prices are before the registration platform's processing fee.
When does the next early-bird price end for ultramarathons near the Bay Area?
New Year's One Day: the 100 miles goes from $195 to $205 after December 1. 3 more of these ultramarathons publish a later price increase.
Are there half marathons or marathons near the Bay Area in winter 2026-27?
Yes: 4 half marathons and 3 marathons. The first is Woodside Ramble on December 19.