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Half marathons in Marin (2026-27)

Updated October 17, 2026

2 half marathons are coming up in Marin in the next 90 days; the next is Mt. Tam Trail Run on Saturday, November 7 in Stinson Beach. 4 half marathons are listed in Marin for the next 12 months.

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• Sat7Nov

  Mt. Tam Trail Run

  Sat Nov 7 · 7:30 AM · Stinson Beach · Marin

  10KHalf marathon18.5 miles30.5 milesTrail

  Reg. closed
• Sat5Dec

  Peacock Gap Trail Run

  Sat Dec 5 · 8:30 AM · San Rafael · Marin

  10KHalf marathon19.5 milesTrail

  Reg. closed
• Sat6Feb

  Golden Gate Trail Run

  Sat Feb 6 · 7:50 AM · Sausalito · Marin

  2 miles8KHalf marathon30KMarathon50KTrail

  from $60Goes up Jan 31
• Sat21Aug

  Double Dipsea

  Sat Aug 21 · 7:00 AM · Stinson Beach · Marin

  Half marathonTrail

  from $180Reg. closed

Quick answers

How many half marathons are in Marin in the next 3 months?

2 half marathons are listed in Marin between October 17 and January 15. The next is Mt. Tam Trail Run on Saturday, November 7 in Stinson Beach.

When does the next early-bird price end for half marathons in Marin?

Golden Gate Trail Run: the 8K goes from $60 to $70 after January 31.

Are there half marathons in Marin this weekend?

None are listed for October 17 to October 18. The next is Mt. Tam Trail Run on Saturday, November 7 in Stinson Beach.