How hilly is the Idaho Mountain Trail Ultra Festival (IMTUF 100)?
The Idaho Mountain Trail Ultra Festival (IMTUF 100) is described as mountainous. The course listing puts the climb at 6,706 m.
Idaho Mountain Trail Ultra Festival (IMTUF 100) Ultramarathon
This race edition
- Race date
- Date not confirmed for this distance
- Race timezone
- Timezone not confirmed
- Edition status
- Status not confirmed
Entry options
2026 edition
Entry options are not yet confirmed for this edition. Check the organiser before making plans.
Official event website ↗Data current as of
Decision summary
Idaho Mountain Trail Ultra Festival (IMTUF 100) Ultramarathon at a glance
- Cut-off average pace
- 13:25/km
- Typical conditions
- 95/100
- Evidence depth
- 43 verified facts
36:00:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.
Historical race-date favourability, not a forecast
Source facts available
Route details
Known course facts at a glance
Idaho Mountain Trail Ultra Festival (IMTUF 100) Ultramarathon has known course details for its ultramarathon race. The summary below keeps the focus on what is confirmed for the course.
- Official distance
- 160.9 km
- Scenery
- Mountain, Forest, Riverside, Canyon, Countryside, Lakeside
Quick answers
What runners ask first
Where does the Idaho Mountain Trail Ultra Festival (IMTUF 100) route go?
The Idaho Mountain Trail Ultra Festival (IMTUF 100) route starts at Jug Mountain Ranch, just south of McCall, Idaho (meadow north of the JMR clubhouse) and finishes at Jug Mountain Ranch, McCall, Idaho (start/finish loop). Underfoot, expect almost entirely narrow single-track mountain trail; rough, rocky and root-filled with steep climbs and descents, described as brutal at times. It passes Salmon River Mountains, Jug Mountain Ranch, Louie Lake, Duck Lake and Snowslide. A single clockwise loop (the 'Supercourse', same flow and direction since 2020) crossing eight major mountain passes through ridges and canyons of the Salmon River Mountains.
What should runners know on race day for the Idaho Mountain Trail Ultra Festival (IMTUF 100)?
Eleven fully staffed aid stations roughly 8 to 12 miles apart, including Louie Lake Dam, South Crest, Duck Lake, Snowslide, Lake Fork (#1 and #2), Boulder Lakes, Goat Aid and Upper Payette, plus the Jug Mountain Ranch start/finish; an unmanned water station sits in the Pete Creek area near 7,600 ft. 10.
Race character
Scenery
- Mountain
- Forest
- Riverside
- Canyon
- Countryside
- Lakeside
- Elevation character
- Mountainous
- Technicality
- Very Technical
- Source-stated ascent
- 6,706 m
Entry, logistics and records
Records and field
- Men's course record
- 19:22
- Women's course record
- 26:42
Entry requirements
- Entry status
- Past event: The listed edition date has passed.
- Cut-off
- 36-hour overall time limit (100 Mile starts Saturday 6:00 AM, must finish by Sunday 6:00 PM)
- Sold out
- Yes
- Qualification status
- IMTUF 100 is both a Hardrock 100 qualifier and a Western States Endurance Run qualifier (listed by WSER with a 36 Hour cutoff). Entry is open registration rather than a lottery.
Race day logistics
- Aid stations
- Eleven fully staffed aid stations roughly 8 to 12 miles apart, including Louie Lake Dam, South Crest, Duck Lake, Snowslide, Lake Fork (#1 and #2), Boulder Lakes, Goat Aid and Upper Payette, plus the Jug Mountain Ranch start/finish; an unmanned water station sits in the Pete Creek area near 7,600 ft.
Access and course status
- Start
- Jug Mountain Ranch, just south of McCall, Idaho (meadow north of the JMR clubhouse)
- Finish
- Jug Mountain Ranch, McCall, Idaho (start/finish loop)
Course facts
- Course type
- Loop
- Surface
- Almost entirely narrow single Track mountain trail; rough, rocky and root Filled with steep climbs and descents, described as brutal at times.
- Landmarks
- Salmon River Mountains, Jug Mountain Ranch, Louie Lake, Duck Lake, Snowslide, Lake Fork, Boulder Lakes, Jughandle Mountain, Upper Payette, Payette National Forest
- Notable features
- A single clockwise loop (the 'Supercourse', same flow and direction since 2020) crossing eight major mountain passes through ridges and canyons of the Salmon River Mountains
- a Hardrock 100 and Western States 100 qualifier renowned for its rugged, technical terrain
What are typical race-day conditions?
- 12°CTypical temperature
- 12 kphTypical wind
- 2 mmTypical rainfall
- 95Favourability /100