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Half Marathon Calendar near The Farm at Arapahoe County 2026-2027

Monthly updates for The Farm at Arapahoe County

Get new running races (and updates) in your inbox every month.

Explore the top half marathons near The Farm at Arapahoe County for 2026-2027! We've gathered 57 exciting races in the area. Check out our detailed list below to find your next local race.

October 2026
Oct
3-4
Sa - Su

The Bear Chase

Trail Run 5 km 10 km ... 50 mi 100 km
Oct
3
Sa

Spooky Sprint - Denver

3 mi 6 mi 13 mi
Oct
3
Sa

Castle Rock Trail Festival

Trail Run 5 km 10 km Half Marathon 50 km
Oct
10
Sa

The Best Races - Foxfield

5 km 10 km 13 mi
Oct
11
Su

Westy Half

5 km 13 mi
Oct
31
Sa

The Best Races - Foxfield

5 km 10 km 13 mi
November 2026
Nov
1
Su

All-Out Kooky-Spooky

5 km 10 km 13 mi
Nov
7
Sa

HRCA Backcountry Wilderness Half Marathon

Trail Run 13 mi
Nov
7
Sa

Turkey Trails Denver

3 mi 6 mi 13 mi
Nov
7
Sa

Marathon at the MAC

5 km Half Marathon Marathon
Nov
14
Sa

The Best Races - Foxfield

5 km 10 km 13 mi
Nov
21
Sa

Turkey Trek - Arvada

5 km 10 km 13 mi
Nov
28
Sa

The Best Races - Foxfield

5 km 10 km 13 mi
December 2026
Dec
5
Sa

All-Out Fa La La

5 km 10 km 13 mi
January 2027
Jan
9
Sa

Polar Prowl

5 km 10 km 13 mi
February 2027
Feb
6
Sa

Mardi Crawl

5 km 10 km 13 mi
March 2027
Mar
21
Su

All-Out Spring Fever

5 km 10 km 13 mi
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