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Winter marathons near the Bay Area (2026-27)

3 marathons on the calendar from December to February, starting with Spasm Crystal Springs Trail Run on Sunday January 17. 3 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)

• Sun17Jan

  Spasm Crystal Springs Trail Run

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

  5 milesHalf marathon22 milesMarathon50KTrail

  from $60Goes up Jan 11
• Sat6Feb

  Golden Gate Trail Run

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

  2 miles8KHalf marathon30KMarathon50KTrail

  from $60Goes up Jan 31
• Sat20Feb

  Montara Mountain Trail Run

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

  2 miles10KHalf marathon20.7 milesMarathon50KTrail

  from $60Goes up Feb 14

• Fall 202650 races
• Spring 202736 races
• Summer 202717 races