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Upcoming Events:


50 Kilometer and Marathon (~26.7 Mile) loop in the San Juan Mountains of Colorado. The course follows the “Alpine Loop” jeep roads past the ghost mining towns of Howardsville, Eureka, Animas Forks and Gladstone. High point is California Pass at 12,930 feet!

Saturday, August 19, 2017

Start Times
7:00 AM 50 Kilometer
8:00 AM Marathon (26.7 miles)

Start / Finish at Memorial Park
Greene & 18th Street
Silverton, CO 81433

Course Summary
Follows Alpine Loop mining road counter-clockwise linking historic mining ghost towns, Howardsville, Eureka, Animas Forks & Gladstone. High point is 12,930 ft atop California Pass. Low point is Silverton at 9,318ft. Total vertical gain is 3,800 for the marathon and 4,400 for the 50k. The 50K runners will complete an out and back to Niagara Gulch before joining the Marathon course.

Bib / Shirt Pickup
Friday, August 18 2:00 PM – 5:00 PM
Location TBD
(Registration will be available)

Saturday, August 19
6:00 AM – 7:45 AM
Memorial Park
(Race Day registration will be available)

Aid Station
Six aid stations well-supplied (except aid #6) with food, water & sports drink. It is highly recommended that you carry water with you between aid stations. Aid Station Helper Form

Race Perks
Technical fabric race shirt (Men’s & Women’s styles)
Barbecue in Memorial Park at the finish
Finisher pint glass
You’re in Silverton, what else do you want!?!


Awards (finisher pint glass) will be given to finishers in the marathon if completed in under 10 hours and to the 50k finishers if finished in under 11 hours. Special awards for Men’s/Women’s Overall winners. Awards ceremony around 1PM, Saturday August 20.

If you are interested in volunteering at one of our aid stations or at the start/finish line sign up here:
Silverton Alpine Marathon & 50K Volunteer Sign Up 

Registration Options


Online at Ultra Signup
Mail-In Entry
Available at packet pickup & race day too!


All Day



The 8th Annual Silverton 1,000 and multi-day Challenge have the following start dates:

  • The 6 Day Run starts on August 19th
  • The 1000 Mile Challenge starts on August 19th
  • The 72 Hour Run starts on August 22th
  • The 48 Hour Run starts on August 23th
  • The Straight 100 Mile starts on August 23th at 7am. This event has a 40 hour cutoff.
  • The 24 Hour Run will start on August 24st.

End date for the runs, except the 1,000 Mile Challenge, is August  24.

An awards ceremony for the 100 miler, the 24, 48, 72 Hour & 6 Day events will be on Aug 25st at 10am.  

NEW for 2017 – 100 miler!!!

That’s right!!! New for 2017 and beyond… we will now offer a straight 100 mile race which will be run on the same 1 mile loop as all of the other races and will be even more of a challenge as we will only allow runners 40 hours to complete this challenge. The 100 Miler will have a special start tie of 7am on August 23th. Do you have what it takes?

24, 48 and 72 Hour Run

The 7th Annual Silverton Multi-Day Challenge is actually 6 races in one. The 72 hour race will start on August 26th, the 48 hour on August 23th, and the 24 hour on August 28 th. All events, with the exception of the 1000 mile challenge, will end on August 29, with an awards ceremony to follow immediately following the conclusion of those events. All participants will receive a goody bag that includes a technical shirt, hat, and other goodies and donated items, if any.

Participants will set up camp near the Kendall Mountain Ski lodge at 9318 feet elevation and wear a bib tag around their waist.  All runners must cross the timing mat at the base of Kendall Mountain, climb 250 vertical feet around a one mile loop as many times as possible in their allotted time.  Participants will endure the elements of the San Juan Mountains around the clock as they fight sleep deprivation and possible heat, rain, lightning and snow.  Runners can camp near the big tent where runners will cross the timing mat. There is a very nominal camping/parking fee of $2 per night that is included in your registration fee and goes to the town of Silverton.

6 Day Run

The Silverton 6 Day Run is part of the Silverton Multi-Day Challenge and will be held on the same 1 mile loop as the 100 mile, 24hr, 48hr & 72 hour runs. The event will be chip timed and each loop will have 250 feet of climb and descent.

All six day runners will be automatic entrants into the 1000 mile Challenge. There will be no additional cost to continue on in the 1000 Mile challenge but the amenities and aid will drastically change at the conclusion of the 6 Day event (meaning no race aid whatsoever, pacers or medical help – basically you will be on your own to finish as the Race Director watches to make sure you meet the continuing qualifications of the challenge). At the end of the six day event, you will have the option to continue on with the 1000 mile challenge (if you qualify to do so) or to stop and be content with your current distance. Note, though, that you will only be able to continue on with the 1000 Mile Challenge if you have accumulated a minimum of 350 miles and if you have run at least one mile each and every hour for the past six days, as well. We’ll be keeping track!

1000 Mile Challenge

The 1000 mile challenge will be run on the same one mile loop as the other Silverton Multi-Day Runs and will also be chip timed. Like the other runs, each loop will have 250 feet of climb and descent, which makes for a total of 250,000 feet of climb and descent for the 1000 miles.

Experience the ultimate endurance challenge. Run or walk 1000 miles around the base of Kendall Mountain in the small mountain town of Silverton, Colorado. In a new twist on the infamous 1809 challenge to Robert Barclay, Silverton 1000 participants may complete as many miles as they choose each hour until they reach 1000 miles (based on specific cutoffs described above and below). While the 24 hour, 48 hour, 72 hour, and 6 day runs are all “go as you please” format, meaning you may run or rest when you choose, in order to be eligible for the 1000 mile challenge, you much complete at least 1 mile/loop of the course each consecutive hour of the event.  In addition, there will be cutoffs in the 1000 mile challenge of 350 miles in 6 days, 700 miles in 12 days, and all 1000 miles in 18 days.

Participants will set up camp near the Kendall Mountain Ski lodge at 9300 feet elevation and wear a timing chip around their ankle. Runners must cross the timing mat at the base of Kendall Mountain, climb 250 vertical feet around a one mile loop at the base of Kendall Mountain at least one time each hour. Participants will endure the elements of the San Juan Mountains around the clock as they fight sleep deprivation, heat, rain, snow, and the accumulated fatigue of traveling at least 24 miles per day. If a participant fails to complete at least one mile on the course in any one hour, they will be disqualified from the Challenge. In addition, in order to proceed on in the 1000 Mile Challenge – you will also have to complete the minimum mileage of 350 miles for the first 6 days and 700 miles in 12 days, to continue.

Completing just one mile per hour for 1000 consecutive hours, it would take 41 days, 16 hours to complete the Silverton 1000 but to keep things interesting, we are only going to give you 18 days. Assuming it would take 20 minutes on average to complete the one mile loop, one would expect an approximate maximum of 1 hour and 20 minutes of sleep at any one time (by completing a mile at the beginning of hour 1 and the end of hour 2).

PRIZE MONEY: $1,000.00 will be awarded to the first runner to complete 1000 miles while meeting all of the qualifications/requirements of the 1000 Mile Challenge (including all cutoffs and mile per hour stipulations).

Sleeping arrangements

All 6 day runners will be given a specified area for sleeping in the heating tent – you will have access to a cot, a sleeping bag and the area will be yours for the entire race.

All 72hr, 48hr, and 24hr runners will have the option of bringing your own tent to use (must be pitched in the gravel next to the main aid station) or you may rent a tent from us – a small 7×7 tent will cost $50 and a larger 9×7 tent will cost $75 (*not a 12×8 as shown at checkout).

All runners will have access to chairs and tables set up throughout the aid station tent.
In addition, some electric blankets and sleeping bags may be available for use on a first come first use basis. If possible, additional heating tents will be set up for the non-6 day runners (as in years past).

10 am - 12 pm

Stream Ecology for Kids

Saturday 8/19

10 am - noon

This workshop will teach kids ages 5 - 10 about river health, water critters, riparian plants, and more! Free and appropriate for kids ages 5 - 10. Meets at the Mountain Discovery Center, 114 East 12th Street, Silverton CO. For more information or to register, contact Priscilla at priscilla@mountainstudies.org or (970) 749-7894. www.mountainstudies.org

Welcome to Silverton, CO Chamber of Commerce

Whether you are a first-time visitor or have visited many times, Silverton Colorado is a place that you will enjoy again and again. Silverton is a National Historic Landmark, part of the San Juan Skyway (with the Million Dollar Highway connecting Silverton to Ouray), home to Animas Forks and the Alpine Loop, and the summer destination for the Durango & Silverton Narrow Gauge Railroad train ride.

With the Weminuche Wilderness close by, Silverton is a recreational paradise in Winter for snowmobiling, skiing (downhill, extreme, heli, snowcat, cross country), sledding, ice skating, ice climbing, and ice fishing, and in Summer for rafting, backcountry touring, Jeeping (Jeep rentals and Jeep tours are available), ATV and OHV riding, fishing, hiking, biking, rafting, horseback riding, hunting, and camping.

Silverton Visitor's Guide

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Everything you need to know, view guide (PDF).

Town Map of Silverton

silverton map

Familiarize yourself and view the map (PDF).

Visitor's Center

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Visit the Visitor's Center page.

Secluded at 9,318 feet, a visit to Silverton is one that you will not forget any time of year. A perfect combination of supreme natural beauty and magnificent Victorian charm.