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Half Marathons Near Denver

Showing the next 50 runs that match your filters

Featured

Mount Rushmore Half

Get $10 Off - Use Code VRRUNGUIDES

Date: Sep 12, 2026 - Saturday

Size: 100 - 500 participants

Location: Hermosa, South Dakota

Half-marathon

Road

Coupon

Featured

Hot Chocolate Run - Denver

Get 15% Off - Use Code RGCO

Date: Oct 4, 2026 - Sunday

Size: 1,000 - 5,000 participants

Location: Denver, Colorado

5k

10k

15k

Road

Coupon

Sloth Run 5K/10K/13.1 - Denver/Aurora

Date: Aug 29, 2026 - Saturday

Size: 100 - 500 participants

Location: Centennial, Colorado

1mi

5k

10k

Half-marathon

Fun Run

Road

Golden Harvest Half Marathon, 5k & 10k - Denver

Date: Sep 5, 2026 - Saturday

Size: 100 - 500 participants

Location: Westminster, Colorado

Half-marathon

5k

10k

1mi

Road

Labor Day Half Marathon, 10K and 5K

Date: Sep 7, 2026 - Monday

Size: 500 - 1,000 participants

Location: Parker, Colorado

5k

10k

Half-marathon

Road

Are you organizing a running event?

Ned Ned Trail Fest

Date: Sep 12, 2026 - Saturday

Size: 500 - 1,000 participants

Location: Nederland, Colorado

5k

10k

Half-marathon

Road

Ned Ned Half Marathon

Date: Sep 12, 2026 - Saturday

Size: 500 - 1,000 participants

Location: Nederland, Colorado

5k

10k

Half-marathon

Trail

National Chocolate Day Run for Chocolates 5K/10K/13.1 - Denver/Aurora

Date: Sep 12, 2026 - Saturday

Size: 100 - 500 participants

Location: Centennial, Colorado

1mi

5k

10k

Half-marathon

Fun Run

Road

Nun Run

Date: Sep 13, 2026 - Sunday

Size: 500 - 1,000 participants

Location: Centennial, Colorado

1mi

5k

Half-marathon

Road

All-Out Fallfest

Date: Sep 19, 2026 - Saturday

Size: 100 - 500 participants

Location: Westminster, Colorado

5k

10k

Half-marathon

Trail

Oktoberfest Run 5K/10K/13.1 - Denver/Aurora

Date: Sep 26, 2026 - Saturday

Size: 100 - 500 participants

Location: Centennial, Colorado

1mi

5k

10k

Half-marathon

Fun Run

Road

Boulderthon: Boulder Marathon

Date: Sep 27, 2026 - Sunday

Size: 10,000+ participants

Location: Boulder, Colorado

5k

10k

Half-marathon

Marathon

Road

The Bear Chase Trail Races

Date: Oct 3-4, 2026 - Saturday to Sunday

Size: 100 - 500 participants

Location: Lakewood, Colorado

5k

10k

Half-marathon

50k

50mi

Ultra

Trail

100k

Spooky Sprint - Denver

Date: Oct 3, 2026 - Saturday

Size: 500 - 1,000 participants

Location: Littleton, Colorado

1mi

5k

10k

Half-marathon

Road

Bagel Run 5K/10K/13.1 - Denver/Aurora

Date: Oct 10, 2026 - Saturday

Size: 100 - 500 participants

Location: Centennial, Colorado

1mi

5k

10k

Half-marathon

Fun Run

Trail

Westy Half & 5k

Date: Oct 11, 2026 - Sunday

Size: 100 - 500 participants

Location: Westminster, Colorado

5k

Half-marathon

Trail

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

Date: Oct 31, 2026 - Saturday

Size: 100 - 500 participants

Location: Centennial, Colorado

1mi

5k

10k

Half-marathon

Fun Run

Trail

All-Out Kooky-Spooky

Date: Nov 1, 2026 - Sunday

Size: 500 - 1,000 participants

Location: Arvada, Colorado

5k

10k

Half-marathon

Trail

Louisville Trail Race

Date: Nov 14, 2026 - Saturday

Size: 500 - 1,000 participants

Location: Louisville, Colorado

5k

10k

Half-marathon

Trail

Run for Mental Health 5K/10K/13.1 - Denver/Aurora

Date: Nov 14, 2026 - Saturday

Size: 100 - 500 participants

Location: Centennial, Colorado

Half-marathon

5k

10k

Fun Run

1mi

Trail

TURKEY TREK (13.1, 10k, 5k & 2k)

Date: Nov 21, 2026 - Saturday

Size: 500 - 1,000 participants

Location: Arvada, Colorado

Half-marathon

5k

10k

Road

2k

Coffee Lovers Run 5K/10K/13.1 - Denver/Aurora

Date: Nov 28, 2026 - Saturday

Size: 100 - 500 participants

Location: Centennial, Colorado

1mi

5k

10k

Half-marathon

Fun Run

Trail

All-Out Fa La La

Date: Dec 5, 2026 - Saturday

Size: 500 - 1,000 participants

Location: Westminster, Colorado

5k

10k

Half-marathon

Trail

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

Date: Dec 12, 2026 - Saturday

Size: 100 - 500 participants

Location: Centennial, Colorado

Half-marathon

5k

10k

Fun Run

1mi

Trail

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

Date: Dec 26, 2026 - Saturday

Size: 100 - 500 participants

Location: Centennial, Colorado

1mi

5k

10k

Half-marathon

Fun Run

Trail

All-Out Polar Prowl

Date: Jan 9, 2027 - Saturday

Size: 100 - 500 participants

Location: Arvada, Colorado

5k

10k

Half-marathon

Fun Run

Trail

MLK Freedom Run 5K/10K/13.1 - Denver/Aurora

Date: Jan, 2027 (TBD)

Size: 100 - 500 participants

Location: Centennial, Colorado

1mi

5k

10k

Half-marathon

Fun Run

Road

Chilly Willy 5K/10K/Half Marathon - Colorado Springs

Date: Jan, 2027 (TBD)

Size: 100 - 500 participants

Location: Colorado Springs, Colorado

5k

10k

Half-marathon

Road

Chilly Willy 5K/10K/Half Marathon - Denver

Date: Jan, 2027 (TBD)

Size: 100 - 500 participants

Location: Littleton, Colorado

5k

10k

Half-marathon

Road

Lunar New Year Run 5K/10K/13.1 - Denver/Aurora

Date: Feb, 2027 (TBD)

Size: 100 - 500 participants

Location: Centennial, Colorado

1mi

5k

10k

Half-marathon

Fun Run

Road

Valentines Live, Love, Run 5K/10K/13.1 - Denver/Aurora

Date: Feb, 2027 (TBD)

Size: 100 - 500 participants

Location: Centennial, Colorado

1mi

5k

10k

Half-marathon

Fun Run

Road

Ralston Creek Half Marathon & 5k

Date: Feb, 2027 (TBD)

Size: 100 - 500 participants

Location: Arvada, Colorado

5k

Half-marathon

Trail

All-Out Mardi Crawl

Date: Feb, 2027 (TBD)

Size: 100 - 500 participants

Location: Arvada, Colorado

5k

10k

Half-marathon

Trail

Time to Paddy 5K/10K & Lucky 13.1 - Denver

Date: Feb, 2027 (TBD)

Size: 100 - 500 participants

Location: Denver, Colorado

5k

10k

Half-marathon

Road

That Dam 13.1, 10K, and 5K

Date: Mar, 2027 (TBD)

Size: 1,000 - 5,000 participants

Location: Greenwood Village, Colorado

5k

10k

Half-marathon

Road

Run for Mental Health 5K/10K/13.1 - Denver/ Aurora

Date: Mar, 2027 (TBD)

Size: 100 - 500 participants

Location: Centennial, Colorado

1mi

5k

10k

Half-marathon

Fun Run

Road

St. Paddy's Day Lucky Run 5K/10K/13.1 - Denver/Aurora

Date: Mar, 2027 (TBD)

Size: 100 - 500 participants

Location: Centennial, Colorado

1mi

5k

10k

Half-marathon

Fun Run

Road

All-Out Spring Fever

Date: Mar, 2027 (TBD)

Size: 500 - 1,000 participants

Location: Arvada, Colorado

5k

10k

Half-marathon

Trail

Always Hope Easter Run 5K/10K/13.1 - Denver/Aurora

Date: Apr, 2027 (TBD)

Size: 100 - 500 participants

Location: Centennial, Colorado

1mi

5k

10k

Half-marathon

Fun Run

Road

Three Creeks Half Marathon

Date: Apr, 2027 (TBD)

Size: 100 - 500 participants

Location: Greenwood Village, Colorado

Half-marathon

Relay

Trail

Mountain Ridge Trail Race

Date: Apr, 2027 (TBD)

Size: 100 - 500 participants

Location: Highlands Ranch, Colorado

5k

10k

Half-marathon

Trail

21mi

Boulder Rez Half

Date: Apr, 2027 (TBD)

Size: 100 - 500 participants

Location: Boulder, Colorado

5k

10k

Half-marathon

Trail

The Spring Fling Prairie Dog Half, 10K & 5K

Date: Apr, 2027 (TBD)

Size: 500 - 1,000 participants

Location: Arvada, Colorado

5k

10k

Half-marathon

Road

DoNot Stop Half Marathon/5k/10k - Denver

Date: Apr, 2027 (TBD)

Size: 100 - 500 participants

Location: Littleton, Colorado

5k

10k

Half-marathon

Road

Bigfoot Half Marathon & 5K

Date: Apr 24, 2027 - Saturday

Size: 500 - 1,000 participants

Location: Estes Park, Colorado

5k

Half-marathon

Trail

NoCo Half Marathon & 10K

Date: Apr, 2027 (TBD)

Size: 100 - 500 participants

Location: Loveland, Colorado

10k

Half-marathon

Road

Blue Heron Half Marathon and 5K

Date: Apr, 2027 (TBD)

Size: 100 - 500 participants

Location: Thornton, Colorado

5k

Half-marathon

Trail

Cinco De Mayo Run 5K/10K/13.1 - Denver/Aurora

Date: May, 2027 (TBD)

Size: 100 - 500 participants

Location: Centennial, Colorado

1mi

5k

10k

Half-marathon

Fun Run

Road

Longmont Half & 5k

Date: May, 2027 (TBD)

Size: 100 - 500 participants

Location: Longmont, Colorado

5k

Half-marathon

Road

Mother's Day Run - Boulder Half, 10k & 5k

Date: May, 2027 (TBD)

Size: 100 - 500 participants

Location: Boulder County, Colorado

1mi

5k

10k

Half-marathon

Trail

Hometown Half Marathon & 5k/10k - Denver

Date: May, 2027 (TBD)

Size: 100 - 500 participants

Location: Littleton, Colorado

1mi

5k

10k

Half-marathon

Road

Super Mom 5K/10K/Half - Colorado Springs

Date: May, 2027 (TBD)

Size: 100 - 500 participants

Location: Colorado Springs, Colorado

5k

10k

Half-marathon

Road

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