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Half Marathon Calendar near Bear Creek Lake Park 2025-2026

Explore the top half marathons near Bear Creek Lake Park for 2025-2026! We've gathered 44 exciting races in the area. Check out our detailed list below to find your next local race.

September 2025
Sep
27
Saturday

The Best Races - Centennial

5 km 10 km 13 mi
Sep
28
Sunday

Run Boulderthon: The Boulder Marathon

5 km 10 km 13 mi 26 mi
October 2025
Oct
4-5
Sa - Su

The Bear Chase

Trail Run 5 km 10 km ... 50 mi 100 km
Oct
4
Saturday

Castle Rock Trail Festival

Trail Run 5 km 10 km 13 mi 50 km
Oct
4
Saturday

The Best Races - Centennial

5 km 10 km 13 mi
Oct
12
Sunday

Westy Half

5 km 13 mi
Oct
18
Saturday

The Best Races - Centennial

5 km 10 km 13 mi
November 2025
Nov
1
Saturday

The Best Races - Centennial

5 km 10 km 13 mi
Nov
2
Sunday

All-Out Kooky-Spooky

5 km 10 km 13 mi
Nov
8
Saturday

HRCA Backcountry Wilderness Half Marathon

Trail Run 13 mi
Nov
15
Saturday

Louisville Trail Race

Trail Run 5 km 10 km 13 mi
Nov
22
Saturday

Turkey Trek 10k

5 km 10 km 13 mi
Nov
29
Saturday

The Best Races - Centennial

5 km 10 km 13 mi
December 2025
Dec
6
Saturday

All-Out Fa La La

5 km 10 km 13 mi
Dec
13
Saturday

The Best Races - Centennial

5 km 10 km 13 mi
Dec
27
Saturday

The Best Races - Centennial

5 km 10 km 13 mi
January 2026
Jan
10
Saturday

Polar Prowl

5 km 10 km 13 mi
Jan
18
Sunday

Arctic Prairie Dog Half Marathon

5 km 10 km 13 mi
February 2026
Feb
22
Sunday

Mardi Crawl

5 km 10 km 13 mi
March 2026
Mar
22
Sunday

All-Out Spring Fever

5 km 10 km 13 mi
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