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Winter trail races near Denver (2026-27)

5 trail races on the calendar from December to February, starting with Sawmill Trail Runs on Saturday December 5. 5 of them publish an upcoming price increase, so signing up early saves money.

All winter races5K races (34)10K races (21)Half marathons (18)Trail races (5)

• Sat5Dec

  Sawmill Trail Runs

  Sat Dec 5 · 8:00 AM · Pine · Foothills & Mountains

  8.08 miles16.14 milesTrail

  from $80Goes up Nov 17
• Sat5Dec

  All-Out Fa La La

  Sat Dec 5 · 9:00 AM · Westminster · Denver Suburbs

  5K10KHalf marathonTrail

  from $50Goes up Nov 22
• Fri1Jan

  Resolute Runner 5k

  Fri Jan 1 · 10:00 AM · Arvada · Denver Suburbs

  5KTrail

  from $44Goes up Dec 1
• Sat9Jan

  All-Out Polar Prowl

  Sat Jan 9 · 9:00 AM · Arvada · Denver Suburbs

  5K10KHalf marathonTrail

  from $50Goes up Dec 27
• Sat6Feb

  All-Out Mardi Crawl

  Sat Feb 6 · 9:00 AM · Arvada · Denver Suburbs

  5K10KHalf marathonTrail

  from $45Goes up Nov 7

• Fall 202653 races
• Spring 202729 races
• Summer 202726 races