Ouray 100 Mile Endurance Run

Trail Running covering 80.5 km to 160.9 km in Ouray (Colorado, United States)

Location

Ouray, Colorado, United StatesShow on map(38.0228° N, 107.6714° W)

Date & StatusJuly 16, 2027 to July 18, 2027Date confirmed

First edition2015

Elevation gainUp to +6,115 m

Ouray 100 Mile Endurance Run is an endurance sporting event in Ouray, Colorado, US focused on Trail Running. First held in 2015, the event is an established fixture on the endurance calendar. It is part of UTMB Index Races. Key features include Mountain, High Altitude, Nature & Off-Road, Forest.

The race program comprises 2 competitions, including 100 Mile (160.93 km, +6,115 m D+), and 50 Mile (80.47 km, +3,058 m D+). The next edition is officially confirmed from July 16, 2027 to July 18, 2027. Official race regulations, course details, and registration information are provided on the organizer's website (ouray100.com).

Official website

Ouray 100 Mile Endurance Run in Ouray (Work: "Ute Trail, Rocky Mountain National Park", Photo: NPS, License: Public Domain, Source: Wikimedia Commons) — "Ute Trail, Rocky Mountain National Park" · Photo: **NPS** · Wikimedia CommonsPublic Domain
Cropped to 16:9 (960 × 540 px), WebP

Event characteristics

Mountain High Altitude Nature & Off-Road Forest Multi-Day

Races & distances (2)

Competition	Discipline	Distance	Elevation gain	Altitude range	Course type	Course & profile
100 Mile	Trail Running	160.93 km	+6,115 m	1,150 m - 3,718 m	Loop course	Route & profile
50 Mile	Trail Running	80.47 km	+3,058 m	1,153 m - 2,437 m	Loop course	Route & profile

Course & Elevation Telemetry

Course route & map

Distance

160.93 km

Elevation gain

+6,115 m D+

Elevation loss

-6,115 m D-

Altitude range

1,150 m - 3,718 m

Gradient (Avg / Max)

7.6 % / 13.7 %

Course format

Loop course

160.93 km+6,115 m D+Peak 3,718 m

Start (S)Finish (F)DownhillFlatClimbSteep

Elevation profile & course telemetry

Altitude from 1,150 m to 3,718 m above sea level (+6,115 m D+, -6,115 m D-)

Peak: 3,718 m·at 48.4 km·Ø 7.6 %

Event Information & Answers

Frequently asked questions (FAQ)

When and where does Ouray 100 Mile Endurance Run take place?

Ouray 100 Mile Endurance Run takes place in Ouray, Colorado, US (start area at coordinates 38.0228° N, 107.6714° W). The next edition is officially confirmed from July 16, 2027 to July 18, 2027.

What races and distances are offered at Ouray 100 Mile Endurance Run?

The race program comprises 2 competitions, including 100 Mile (160.93 km, +6,115 m D+), and 50 Mile (80.47 km, +3,058 m D+). The competitions belong to Trail Running.

What is the course layout and elevation profile for Ouray 100 Mile Endurance Run?

The main competition (100 Mile over 160.93 km) is designed as a loop course featuring +6,115 m of elevation gain and -6,115 m of elevation loss, ranging between 1,150 m and 3,718 m above sea level. An interactive course map with route visualization, elevation profile, and GPX export is available in the course section on this page.

Where can I find registration and official race rules for Ouray 100 Mile Endurance Run?

Official race regulations, course details, and registration information are provided on the organizer's website (ouray100.com).