September Half Marathons within 400 miles of Durango, CO

Sep

All Classic

Half Marathon

Name

Featured Listings
No	Race Date	Race	Location	Options
1	Sep 28, 2025 Sunday	Boulderthon: Downtown Boulder Marathon 26.2M, 13.1M, 10K, 5K run \| kids run More Information	Boulder, CO City Location Boulder County, CO	details update save claim feature

No	Race Date	Race	Location	Options
1	Past Date Sep 1, 2024 Sunday	Calarat Challenge Trail Running Festival 13.1M, 10K trail run More Information	Jamestown, CO City Location 236 miles point to point Directions Boulder County, CO	details update save claim feature
2	Sep 1, 2025 Monday	Labor Day Half Marathon 13.1M, 10K, 5K run More Information	Parker, CO City Location 226 miles point to point Directions Douglas County, CO	details update save claim feature
3	Sep 5, 2025 Friday	Moonlight Half Marathon 13.1M run More Information	Mapleton, UT City Location 278 miles point to point Directions Utah County, UT	details update save claim feature
4	Sep 6, 2025 Saturday	Runtastic NEBO 26.2M, 13.1M, 10K, 5K run More Information	Payson, UT City Location 280 miles point to point Directions Utah County, UT	details update save claim feature
4	Sep 6, 2025 Saturday	Boston Marathon Qualifier		details update save claim feature
5	Past Date Sep 7, 2024 Saturday	Black Squirrel Half Marathon 13.1M trail run More Information	Bellvue, CO City Location 272 miles point to point Directions Larimer County, CO	details update save claim feature
6	Past Date Sep 7, 2024 Saturday	Cedar City Half Marathon 13.1M run More Information	Cedar City, UT City Location 278 miles point to point Directions Iron County, UT	details update save claim feature
7	Past Date Sep 7, 2024 Saturday	Gut Check 26.2M, 13.1M, 5M run More Information	Gunnison, UT City Location 246 miles point to point Directions Sanpete County, UT	details update save claim feature
8	Past Date Sep 7, 2024 Saturday	Sloan's Lake Search Party (SLSP)! Marathon Hourly Loop Race 26.2M, 13.1M run More Information	Denver, CO City Location 228 miles point to point Directions Denver County, CO	details update save claim feature
9	Sep 7, 2025 Sunday	T-Bird Trek 13.1M, 10K, 5K run More Information	Casper, WY City Location 392 miles point to point Directions Natrona County, WY	details update save claim feature
10	Past Date Sep 8, 2024 Sunday	Chips & Salsa Half Marathon 13.1M, 10K, 5K run \| kids run Virtual Option More Information	Albuquerque, NM City Location 166 miles point to point Directions Bernalillo County, NM	details update save claim feature
11	Sep 13, 2025 Saturday	All-Out Fall Fest 13.1M, 10K, 5K run Virtual Option More Information	Westminster, CO City Location 232 miles point to point Directions Adams County, CO Jefferson County, CO	details update save claim feature
11	Sep 13, 2025 Saturday	Boston Marathon Qualifier		details update save claim feature
12	Sep 13, 2025 Saturday	REVEL Big Cottonwood 26.2M, 13.1M run More Information	Salt Lake City, UT City Location 321 miles point to point Directions Salt Lake County, UT	details update save claim feature
12	Sep 13, 2025 Saturday	Boston Marathon Qualifier		details update save claim feature
13	Past Date Sep 14, 2024 Saturday	Bull Of The Woods Trail Race 26.2M, 13.1M trail run More Information	Taos Ski Valley, NM City Location 137 miles point to point Directions Taos County, NM	details update save claim feature
14	Past Date Sep 14, 2024 Saturday	Ned Ned Run 13.1M, 10K, 5K trail run More Information	Nederland, CO City Location 223 miles point to point Directions Boulder County, CO	details update save claim feature
15	Sep 14, 2025 Sunday	Nun Run 13.1M, 5K run More Information	Denver, CO City Location 228 miles point to point Directions Denver County, CO	details update save claim feature
16	Past Date Sep 14, 2024 Saturday	Trail Sisters Women's Half Marathon 13.1M, 10K trail run More Information	Buena Vista, CO City Location 141 miles point to point Directions Chaffee County, CO	details update save claim feature
17	Sep 20, 2025 Saturday	Devil After Dark 26.2M, 13.1M, 10K, 5K run More Information	Las Vegas, NV City Location 393 miles point to point Directions Clark County, NV	details update save claim feature
18	Sep 20, 2025 Saturday	Race to Raise 13.1M, 10K, 1M run More Information	Pinedale, WY City Location 400 miles point to point Directions Sublette County, WY	details update save claim feature
19	Past Date Sep 21, 2024 Saturday	Autumn Run 26.2M, 13.1M, 10K, 5K run \| kids run More Information	Buena Vista, CO City Location 141 miles point to point Directions Chaffee County, CO	details update save claim feature
20	Past Date Sep 21, 2024 Saturday	Beulah Challenge 13.1M, 10K, 5K run More Information	Beulah, CO City Location 162 miles point to point Directions Pueblo County, CO	details update save claim feature

For the love of all that Is good And moisture wicking...

Though we Try To be accurate And On top Of things... Race details can change When we aren't lookin. And once in a while we simply make a mistake.

ALWAYS visit the race's website for the most complete and accurate race information.