
Trail Sisters Women's Half Marathon & 10k is a trail running and running race on September 12, 2026 in Buena Vista, CO, with entry fees from $65 to $100.
From the Organizer
A Half Marathon and 10K that twist and turn through sage brush and ponderosa pines, all while providing stunning views of the prestige Collegiate Peaks. Located in the Rocky Mountains along the roaring Arkansas River.
Come Join Trail Sisters best weekend of the year in Buena Vista, Colorado. Travel with your Trail Sisters Local Group OR SOLO and you'll arrive to a welcoming community of supportive women who will ensure your day is filled with smiles, high-fives and the support you need to get to the finish line!
Weather
Live forecast from the U.S. National Weather Service.
Race Day
Saturday, 9/12
High
79°
Low
46°
Conditions
Sunny then chance showers and thunderstorms
Chance of Rain
38%
Wind
5 to 10 mph
Host City
City Elevation
8,017 ft
Nearest Airport
ASE
Aspen-Pitkin County Airport (Sardy Field) · 47 mi
Major Hub
COS
City of Colorado Springs Municipal Airport · 78 mi
Time Zone
Mountain Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at Trail Sisters Women's Half Marathon & 10k, put it on the calendar, and turn “someday” into a start date.
6
Days to train
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From Endurance Grid
This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Running off-road — dirt, singletrack, and mountain paths — from 5Ks to ultras. The terrain makes for an exciting twist and adventure in your running journey.
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
Trail Sisters Women's Half Marathon & 10k
Sep 12, 2026