Run a marathon or challenge yourself with the 10-mile Ascent in the mountains of Boulder County. Enjoy varied terrain and spectacular views as you follow dirt roads and the Switzerland Trail. The Ascent begins at the Adventure Lodge at the base of Fourmile Canyon and ends in Gold Hill. The marathon starts and finishes at the historic Gold Hill Inn. All proceeds benefit the Fourmile Fire Protection District.

Hard to prepare for 3 feet of snow on May 18th, but that's what has fallen in Gold Hill! Scroll down for some photos of the snowfall. We are rescheduling the race for September and will post the new date here as soon as it's finalized. This is an important fundraiser for the Fourmile Fire Department, the people responsible for the district that hosts the race and once we cover the cost of the race, 100% of proceeds go to Fourmile Fire. If you are registered and unable to join us in September, please consider giving the FD a donation. If you would like a refund or have questions, please be in touch with

Race Schedule

May 11th, 2017

5:00 - Fun Run, 5:30-7:00 Pre-Race Happy Hour at Flatirons Running -- Learn about the course from designer, Joe Grant and have all of your questions answered while you enjoy goodies courtesy of our sponsors.  Meet some of the firefighters your participation is supporting!

May 20th, 2017
Noon-4:00PM - Packet Pick-up at Flatirons Running, Inc., 629 S. Broadway, Boulder. THERE IS NO RACE-DAY PACKET PICK-UP!

May 21st, 2017
7:00AM - Marathon Start
9:00AM - 10-Mile Ascent Start

Race Registration

Register in-store at Flatirons Running or online at  Registration will re-open once we have our rescheduled date.


Boulder Mountain Marathon and 10-Mile Ascent Logo

The Course

Location: Gold Hill Inn, Gold Hill, CO

To see a more detailed map with elevation profile, see these: Marathon and 10-Mile Ascent


10-Mile Ascent participants must park at the finish in Gold Hill; there is no parking available at the start. Please allow plenty of time for parking in Gold Hill(Driving time from Boulder is approximately 35 minutes). Parking is extremely limited, so please make an effort to carpool! Parking for participants will be available at the Bluebird Lodge and along the road in Gold Hill. Buses will shuttle Ascent runners to the start. The first bus will leave at 7:00AM and the last bus will leave at 7:45.  Marathon runners - you will be directed to parking near the start/finish.

The A-Lodge, at the base of Fourmile Canyon is offering a 15% discount to race participants for the night before the race (Saturday, May 14th). Show them your registration confirmation to get your discount and mention the race when you make your reservation!


Gold Hill Inn is hosting the post-race party with other sponsors on site. There will be plenty to keep you hanging around after the race, so bring some dry clothes to put on and join the party with a live bluegrass band, delicious food from the Gold Hill Inn and Real Athlete Diets, beer from Avery Brewing Co, raffle prizes from RAD, Suffer Better, Trail Runner and more!

ALL PARTICIPANTS RECEIVE a goody bag from Ultimate Direction with a tech race shirt from Suffer Better and TikTokInk and gifts from Trail Runner Magazine, Suffer Better, and more! This will be one of the best goody bags you've ever gotten!

AWARDS will be given to the top three men and women in each race. Winners earn a real wildland fire axe! Other prizes include Scarpa shoes, Salomon and Ultimate Direction hydration packs, RAD granola, and more!

Interested in volunteering? Contact Cassie at



It costs more money than you might think to keep safe those who protect us and our homes from fires.  Here's the comparison for firefighting gear and running gear (Jaimee, a Fourmile Firefighter is seen in each of these outfits below):

Structure fire clothing:
Jacket $800.00
Pants $800.00
Boots $250.00
Helmet $375.00
Gloves $80.00
Hood $50.00
Breathing mask (SCBA) $6,400.00
Total cost to keep her cool in a burning building $8,755.00
Wildland fire clothes:
Shirt $130.00
Pants $150.00
Boots $225.00
Gloves $30.00
Pack $200.00
Shroud $40.00
Helmet $180.00
Fire Shelter $460.00
Total cost to keep her from turning toasty $1415.00
Cost to keep her running in style:
pants - $80
shoes - $100
Flatirons t-shirt - $20
long sleeve shirt - $50
Buff - $15
Total for running in style - $265

Thanks to Our Sponsors