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Ultramarathons in Peninsula (2026-27)

Updated October 17, 2026

1 ultra is coming up in Peninsula in the next 90 days; the next is Woodside Ramble on Saturday, December 19 in Woodside. 3 ultramarathons are listed in Peninsula for the next 12 months.

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• Sat19Dec

  Woodside Ramble

  Sat Dec 19 · 8:00 AM · Woodside · Peninsula

  10KHalf marathon23.1 miles50KTrail

  Reg. closed
• Sun17Jan

  Spasm Crystal Springs Trail Run

  Sun Jan 17 · 7:50 AM · Woodside · Peninsula

  5 milesHalf marathon22 milesMarathon50KTrail

  from $60Goes up Jan 11
• Sat20Feb

  Montara Mountain Trail Run

  Sat Feb 20 · 7:45 AM · Pacifica · Peninsula

  2 miles10KHalf marathon20.7 milesMarathon50KTrail

  from $60Goes up Feb 14

Quick answers

How many ultramarathons are in Peninsula in the next 3 months?

1 ultra is listed in Peninsula between October 17 and January 15. The next is Woodside Ramble on Saturday, December 19 in Woodside.

When does the next early-bird price end for ultramarathons in Peninsula?

Spasm Crystal Springs Trail Run: the 5 miles goes from $60 to $70 after January 11. 1 more of these ultramarathons publish a later price increase.

Are there ultramarathons in Peninsula this weekend?

None are listed for October 17 to October 18. The next is Woodside Ramble on Saturday, December 19 in Woodside.