Home / Denver & Boulder / Winter 2026-27

Winter races near Denver (2026-27)

37 races on the calendar from December to February, starting with Sawmill Trail Runs on Saturday December 5. 23 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
• Sun6Dec

  Candy Cane Course - Denver

  Sun Dec 6 · 9:00 AM · Westminster · Denver Suburbs

  1 mile5K10K9.3 miles

  from $27Goes up Nov 16
• Sun6Dec

  Rmrr December 4.5mi

  Sun Dec 6 · 9:00 AM · Denver · Denver

  4.5 miles

  from $10Goes up Dec 5
• Sat12Dec

  Run for Breast Cancer 5K/10K/13.1 Denver/Aurora

  Sat Dec 12 · 7:30 AM · Centennial · Denver Suburbs

  1 mile5K10KHalf marathon

  from $30
• Sat12Dec

  Sunrise Marathon 5K/10K/13.1 Denver/Aurora

  Sat Dec 12 · 7:30 AM · Centennial · Denver Suburbs

  1 mile5K10KHalf marathon

  from $30
• Sat12Dec

  Santa Shuffle 5K

  Sat Dec 12 · 8:30 AM · Littleton · Denver Suburbs

  5K

  from $35Goes up Nov 1
• Sat12Dec

  Superior Stocking Run

  Sat Dec 12 · 10:00 AM · Superior · Denver Suburbs

  5K

  from $25Goes up Nov 1
• Sat12Dec

  WinterFest 5k & Fun Run

  Sat Dec 12 · 10:15 AM · Thornton · Denver

  5K

  from $35Goes up Nov 13
• Sun13Dec

  Jingle Bell Run - Colorado

  Sun Dec 13 · 8:00 AM · Denver · Denver

  1 mile5K

  from $40Goes up Nov 1
• Sat19Dec

  Colorado Tap House Jingle Bell Run

  Sat Dec 19 · 10:00 AM · Arvada · Denver Suburbs

  1 mile

  from $6
• Sat19Dec

  Santa's Dash for Ca$h

  Sat Dec 19 · 10:00 AM · Denver · Denver

  5K

  from $39Goes up Nov 1
• Sun20Dec

  Ugly Sweater 5K

  Sun Dec 20 · 9:00 AM · Denver · Denver

  5K

  from $33Goes up Nov 16
• Sat26Dec

  A Merry Christmas Run 5K/10K/13.1 Denver/Aurora

  Sat Dec 26 · 7:30 AM · Centennial · Denver Suburbs

  1 mile5K10KHalf marathon

  from $30
• Sat26Dec

  New Year's Run 5K/10K/13.1 Denver/Aurora

  Sat Dec 26 · 7:30 AM · Centennial · Denver Suburbs

  1 mile5K10KHalf marathon

  from $30
• 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
• Sat9Jan

  Sentinel Flurry

  Sat Jan 9 · 9:00 AM · Golden · Foothills & Mountains

  1 mile5K4.1 miles

  from $25Goes up Dec 30
• Sat16Jan

  MLK Jr. Freedom Run 5K/10K/13.1 Denver/Aurora

  Sat Jan 16 · 7:30 AM · Centennial · Denver Suburbs

  1 mile5K10KHalf marathon

  from $30
• Sat16Jan

  Sunrise Marathon 5K/10K/13.1 Denver/Aurora

  Sat Jan 16 · 7:30 AM · Centennial · Denver Suburbs

  1 mile5K10KHalf marathon

  from $30
• Sun17Jan

  Colorado Cold Snap

  Sun Jan 17 · 9:40 AM · Louisville · Denver Suburbs

  5K10K

  from $39Goes up Oct 18
• Sun24Jan

  Freakin Freezin 5K - Denver

  Sun Jan 24 · 9:00 AM · Denver · Denver

  5K

  from $30Goes up Jan 17
• Sun24Jan

  Yeti Chase 5k/10k

  Sun Jan 24 · 10:00 AM · Morrison · Denver

  5K10K

  from $25Goes up Nov 1
• Sat30Jan

  Coffee Lover Run Denver/Aurora

  Sat Jan 30 · 7:30 AM · Centennial · Denver Suburbs

  1 mile5K10KHalf marathon

  from $30
• Sat30Jan

  Run for Donut Denver/Aurora

  Sat Jan 30 · 7:30 AM · Centennial · Denver Suburbs

  1 mile5K10KHalf marathon

  from $30
• Sat30Jan

  Time Travel Half-Marathon/5K/10K - Denver

  Sat Jan 30 · 9:00 AM · Westminster · Denver Suburbs

  1 mile5K10KHalf marathon

  from $20Goes up Oct 27
• Sat6Feb

  All-Out Mardi Crawl

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

  5K10KHalf marathonTrail

  from $45Goes up Nov 7
• Sat6Feb

  Westy Winter Waggle 5&10k

  Sat Feb 6 · 9:40 AM · Westminster · Denver Suburbs

  5K10K

  from $35Goes up Jan 30
• Sun7Feb

  Old Man Winter Bike Rally & Run

  Sun Feb 7 · 9:30 AM · Lyons · Fort Collins & Loveland

  5K10KHalf marathon

  from $49Goes up Nov 2
• Sat13Feb

  Run for Chocolate 5K/10K/13.1 Denver/Aurora

  Sat Feb 13 · 7:30 AM · Centennial · Denver Suburbs

  1 mile5K10KHalf marathon

  from $30
• Sat13Feb

  Valentine's Day Run 5K/10K/13.1 Denver/Aurora

  Sat Feb 13 · 7:30 AM · Centennial · Denver Suburbs

  1 mile5K10KHalf marathon

  from $30
• Sat13Feb

  Heart Throb 5k

  Sat Feb 13 · 10:00 AM · Arvada · Denver Suburbs

  5K

  from $35Goes up Jan 1
• Sun14Feb

  Ralston Creek Half Marathon & 5k

  Sun Feb 14 · 9:00 AM · Arvada · Denver Suburbs

  5KHalf marathon

  from $25Goes up Nov 1
• Wed17Feb

  C.O.P.S. Winter Race Series

  Wed Feb 17 · 6:00 PM · Golden · Foothills & Mountains

  5K

  from $30Reg. closed
• Sat27Feb

  Run For Mental Health Denver/Aurora

  Sat Feb 27 · 7:30 AM · Centennial · Denver Suburbs

  1 mile5K10KHalf marathon

  from $30
• Sat27Feb

  Run Together Against Breast Cancer Denver/Aurora

  Sat Feb 27 · 7:30 AM · Centennial · Denver Suburbs

  1 mile5K10KHalf marathon

  from $30
• Sun28Feb

  Highlands Ranch 5k

  Sun Feb 28 · 10:00 AM · Highlands Ranch · Denver Suburbs

  5K

  from $43Goes up Nov 7

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