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Half marathons in Denver Suburbs (2026-27)

Updated October 17, 2026

16 half marathons are coming up in Denver Suburbs in the next 90 days; the next is Halloween Trick or Trot Run 5K/10K/13.1 Denver/Aurora on Saturday, October 31 in Centennial. 51 half marathons are listed in Denver Suburbs for the next 12 months.

All Denver Denver (8)Denver Suburbs (51)Foothills & Mountains (3)Fort Collins & Loveland (3)

By date

Halloween Trick or Trot Run 5K/10K/13.1 Denver/Aurora

Sat Oct 31 · 7:30 AM · Centennial · Denver Suburbs

1 mile5K10KHalf marathon

Reg. closed
PB&J Fuel Run 5K/10K/13.1 Denver/Aurora

Sat Oct 31 · 7:30 AM · Centennial · Denver Suburbs

1 mile5K10KHalf marathon

Reg. closed
Hrca Backcountry Wilderness Half Marathon

Sat Oct 31 · 9:00 AM · Lone Tree · Denver Suburbs

Half marathonTrail

from $85Goes up Oct 27
Turkey Trails- Denver

Sat Nov 7 · 8:00 AM · Littleton · Denver Suburbs

1 mile5K10KHalf marathonTrail

from $22Goes up Oct 19
Run for Mental Health 5K/10K/13.1 Denver/Aurora

Sat Nov 14 · 7:30 AM · Centennial · Denver Suburbs

1 mile5K10KHalf marathon

from $30
Veterans Day Freedom Run 5K/10K/13.1 Denver/Aurora

Sat Nov 14 · 7:30 AM · Centennial · Denver Suburbs

1 mile5K10KHalf marathon

from $30
Salute to Veterans 5K/10K/Half Marathon - Denver

Sat Nov 14 · 8:00 AM · Aurora · Denver Suburbs

5K10KHalf marathon

from $15Goes up Nov 8
Turkey Trek (13.1, 10k, 5k & 2k)

Sat Nov 21 · 8:30 AM · Arvada · Denver Suburbs

2K5K10KHalf marathon

from $29Goes up Nov 1
Coffee Lovers Run 5K/10K/13.1 Denver/Aurora

Sat Nov 28 · 7:30 AM · Centennial · Denver Suburbs

1 mile5K10KHalf marathon

from $30
Thanksgiving Gobble Trot Run 5K/10K/13.1 Denver/Aurora

Sat Nov 28 · 7:30 AM · Centennial · Denver Suburbs

1 mile5K10KHalf marathon

from $30
All-Out Fa La La

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

5K10KHalf marathonTrail

from $50Goes up Nov 22
Run for Breast Cancer 5K/10K/13.1 Denver/Aurora

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

1 mile5K10KHalf marathon

from $30
Sunrise Marathon 5K/10K/13.1 Denver/Aurora

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

1 mile5K10KHalf marathon

from $30
A Merry Christmas Run 5K/10K/13.1 Denver/Aurora

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

1 mile5K10KHalf marathon

from $30
New Year's Run 5K/10K/13.1 Denver/Aurora

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

1 mile5K10KHalf marathon

from $30
All-Out Polar Prowl

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

5K10KHalf marathonTrail

from $50Goes up Dec 27
MLK Jr. Freedom Run 5K/10K/13.1 Denver/Aurora

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

1 mile5K10KHalf marathon

from $30
Sunrise Marathon 5K/10K/13.1 Denver/Aurora

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

1 mile5K10KHalf marathon

from $30
Coffee Lover Run Denver/Aurora

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

1 mile5K10KHalf marathon

from $30
Run for Donut Denver/Aurora

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

1 mile5K10KHalf marathon

from $30
Time Travel Half-Marathon/5K/10K - Denver

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

1 mile5K10KHalf marathon

from $20Goes up Oct 27
All-Out Mardi Crawl

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

5K10KHalf marathonTrail

from $45Goes up Nov 7
Run for Chocolate 5K/10K/13.1 Denver/Aurora

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

1 mile5K10KHalf marathon

from $30
Valentine's Day Run 5K/10K/13.1 Denver/Aurora

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

1 mile5K10KHalf marathon

from $30
Ralston Creek Half Marathon & 5k

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

5KHalf marathon

from $25Goes up Nov 1
Run For Mental Health Denver/Aurora

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

1 mile5K10KHalf marathon

from $30
Run Together Against Breast Cancer Denver/Aurora

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

1 mile5K10KHalf marathon

from $30
St. Paddy's Day Lucky Run 5K/10K/13.1 Denver/Aurora

Sat Mar 20 · 7:30 AM · Centennial · Denver Suburbs

1 mile5K10KHalf marathon

from $30
Sunrise Marathon 5K/10K/13.1 Denver/Aurora

Sat Mar 20 · 7:30 AM · Centennial · Denver Suburbs

1 mile5K10KHalf marathon

from $30
Always Hope Easter Run Denver/Aurora

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

1 mile5K10KHalf marathon

from $30
SuperHeroes Run Denver/Aurora

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

1 mile5K10KHalf marathon

from $30
Three Creeks Half Marathon

Sun Apr 4 · 8:00 AM · Englewood · Denver Suburbs

Half marathon

from $65Goes up Dec 1
Run for PB&J 5k/10k/13.1 Denver/Aurora

Sat Apr 10 · 7:30 AM · Centennial · Denver Suburbs

1 mile5K10KHalf marathon

from $30
Sloth Run 5K/10K/13.1 Denver/Aurora

Sat Apr 10 · 7:30 AM · Centennial · Denver Suburbs

1 mile5K10KHalf marathon

from $30
Platte River Half-Marathon, Relay & 5k

Sun Apr 11 · 7:00 AM · Littleton · Denver Suburbs

5KHalf marathonTrail

from $45Goes up Nov 1
Spring Fling Prairie Dog Half, 10k, & 5k

Sun Apr 11 · 8:00 AM · Arvada · Denver Suburbs

5K10KHalf marathon

from $39Goes up Jan 11
Coffee Lover Run Denver/Aurora

Sat Apr 24 · 7:30 AM · Centennial · Denver Suburbs

1 mile5K10KHalf marathon

from $30
Run for Donut Denver/Aurora

Sat Apr 24 · 7:30 AM · Centennial · Denver Suburbs

1 mile5K10KHalf marathon

from $30
All-Out Beat the Heat

Sat Apr 24 · 8:00 AM · Westminster · Denver Suburbs

5K10KHalf marathonTrail

from $35Goes up Oct 25
Run for Chocolate 5k/10k/13.1 Denver/Aurora

Sat May 8 · 7:30 AM · Centennial · Denver Suburbs

1 mile5K10KHalf marathon

from $30
SuperHeroes Run Denver/Aurora

Sat May 29 · 7:30 AM · Centennial · Denver Suburbs

1 mile5K10KHalf marathon

from $30
Colorado 13er (Half Marathon/10k/5k)

Sun Jun 6 · 6:30 AM · Louisville · Denver Suburbs

5K10KHalf marathonTrail

from $35Goes up Mar 1
All-Out Summer Breeze

Sat Jun 12 · 7:00 AM · Arvada · Denver Suburbs

5K10KHalf marathonTrail

from $35Goes up Dec 13
Run Juneteenth Day 5K/10K/13.1 Denver/Aurora

Sat Jun 19 · 7:00 AM · Centennial · Denver Suburbs

1 mile5K10KHalf marathon

from $30
All-Out Dog Days

Sat Jul 10 · 7:00 AM · Westminster · Denver Suburbs

5K10KHalf marathonTrail

from $35Goes up Jan 11
Summer Splash Prairie Dog Half, 10k, & 5k

Sat Jul 17 · 6:30 AM · Castle Rock · Denver Suburbs

5K10KHalf marathonTrail

from $39Goes up Apr 18
All-Out Runapalooza

Sat Aug 7 · 7:00 AM · Arvada · Denver Suburbs

5K10KHalf marathonTrail

from $35Goes up Feb 8
Pioneer Prairie Dog Half, 10k & 5k

Sun Aug 22 · 7:15 AM · Westminster · Denver Suburbs

5K10KHalf marathon

from $39Goes up May 24
Labor Day Half Marathon

Mon Sep 6 · 7:00 AM · Parker · Denver Suburbs

5K10KHalf marathonTrail

from $30Goes up Apr 30
All-Out Fall Fest

Sat Sep 18 · 8:00 AM · Westminster · Denver Suburbs

5K10KHalf marathonTrail

from $35Goes up Mar 19
Westy Half & 5k

Sun Oct 10 · 8:00 AM · Westminster · Denver Suburbs

5KHalf marathon

from $39Reg. closed

Quick answers

How many half marathons are in Denver Suburbs in the next 3 months?

16 half marathons are listed in Denver Suburbs between October 17 and January 15. The next is Halloween Trick or Trot Run 5K/10K/13.1 Denver/Aurora on Saturday, October 31 in Centennial.

What is the cheapest half marathon in Denver Suburbs right now?

Salute to Veterans 5K/10K/Half Marathon - Denver on November 14 has the lowest listed entry fee in the next 90 days: $15. Prices are before the registration platform's processing fee.

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

Turkey Trails- Denver: the 5K goes from $40 to $44 after October 19. 20 more of these half marathons publish a later price increase.

Are there half marathons in Denver Suburbs this weekend?

None are listed for October 17 to October 18. The next is Halloween Trick or Trot Run 5K/10K/13.1 Denver/Aurora on Saturday, October 31 in Centennial.