Colorado - Rocky Mountains
Trail Running




Date: Sep 17, 2022

Location: Eagle, Colorado

Region: Colorado - Rocky Mountains


Directions: Get Directions

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Mountain RATS

September 17 @ 8:00 am - September 18 @ 5:00 pm


For all runners who need an end-of-summer celebration, Gemini Adventures brings racers to Eagle Ranch with the festival of fun, Mountain RATS. There are three course options that wind through the rugged mountains of Eagle, Colorado with almost 100% dirt trails; Heavy Half, Marathon, and 55K. The festival begins at the finish line where participants are congratulated with free beer or a Color Roasters coffee. Registration also includes winner awards, shirts and finisher’s memento. An awards ceremony at end of race day gives customized cowbell to the top three male and female finishers of each race of each age group, six total categories. Fully stocked aid stations are provided for each race, they are cupless but have snacks and hydration options for runners to fill up their own water bottle. Mountain RATS Festival is an entire weekend celebrating those athletes who love the scenic outdoors. Saturday starts with sunrise yoga outdoors, followed by the start time of trail runners. Sunday is dedicated to the Firebird 50K & 25K MTB for mountain bikers competing in either a 50K or 25K, another rugged race organized by Gemini Adventures.

55K is the longest and most challenging option with a course of 36.1 miles and 6400 feet of climbing. There are nine aid stations along the way with cut-off times at Spring Creek, station 4, and School House, station 6. The first uphill starts at mile 2.4 and continues with a variety of double and single-track trails as runners attack short, steep climbs and ascents that level off. Those competing in 55K will be able to run along World’s Greatest Trail that has steep ascents and descents with open views.

Marathon is 24.2 miles long with 4500 feet of climbing. There are seven aid stations throughout the course with cut-off times at Spring Creek, station 4, and Easy Rider, station 5. Marathon racers are running with those in 55K until School House aid station. There are plenty of steep climbs and diverse trail types as runners wind through Third Gulch Trail, Pipeline Trail, and Star Wars Trail.

Heavy Half is a 15.4 mile run with a little more than 2500 feet of climbing. There are five aid stations and the Heavy Half does not have a cut-off time. The longest climb of the course starts two miles into the race with a climb of 4 miles and 1100 vertical feet. The rest of the course has short climbs and descents, open views, and mix of double and single-tracks that are described as previous participants as fun.

For those looking for meals beyond the festival, there are many options in Eagle, Colorado or nearby at Copper Mountain Resort. Local restaurants include Mamma’s Italiano, The Eagle BBQ, and High Rockies Whiskey and Wine Bar. The host hotel for event is Quality Inn and Suites, see details on dedicated event site. Colorado is gorgeous all year but September in Eagle is a great way to end the summer and welcome fall before preparing for ski season. See you there!



September 17 @ 8:00 am
September 18 @ 5:00 pm
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Eagle, Colorado
Eagle, CO United States + Google Map

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