runfarwhere
Trail · 100 Mile

IMTUF

· starts 6:00 AM
McCall, ID

Hardrock QualifierWSER Qualifier
The race's site ↗Course map ↗

IMTUF is a trail race of 100 miles (161 km) in McCall, Idaho. The next edition is in September 2027; its day hasn't been announced. The race gives its climbing as 21,900 ft (6,675 m); measured from its course file, it's 18,202 ft (5,548 m). It starts at 4,969 ft (1,514 m) above sea level. Its high point is 8,343 ft (2,543 m). The course finishes where it starts. It's a Hardrock 100 qualifier and a Western States 100 qualifier. Registration is open to all; registration opened on January 2, 2026. The field is about 200 runners.

There is one other upcoming 100-mile race in Idaho. IMTUF climbs about 219 ft a mile (41 m per km), steeper than 60% of the 142 100-mile races listed with their climbing.

102miDistance
21,900ftClimbing
200runnersField
77°Flow 49°FTypical race day

The course

102miMeasured distance
10Aid stations
18,202ftMeasured climb
18,202ftDescent
8,343ftHigh point
4,969ftLow point

Questions about IMTUF

When is IMTUF 2027?

IMTUF 2027 is in September 2027; its day hasn't been announced yet.

Where is IMTUF?

IMTUF is held in McCall, Idaho.

How long is IMTUF?

IMTUF is 100 miles (161 km); its course file measures 102 miles.

How much elevation gain does IMTUF have?

IMTUF has 21,900 ft (6,675 m) of elevation gain, as the race states it.

Is IMTUF a Western States qualifier?

Yes. IMTUF is on the Western States 100's list of qualifying races. Check wser.org for the qualifying standard and years.

How do you get into IMTUF?

IMTUF has open registration. Registration opened on January 2, 2026.

What is the weather usually like at IMTUF?

Around IMTUF's date, the day's high is typically about 77°F (25°C) and the low about 49°F (9°C), averaged over recent years.

How many aid stations does IMTUF have?

IMTUF's course has 10 aid stations after the start.

Where can I see the IMTUF elevation profile and aid station cutoffs?

runfarwhere has IMTUF's course file. The outline, distance and climbing are free on its page; the elevation profile, aid stations with cutoffs and the GPX file are part of runfarwhere Premium.

How hilly is IMTUF?

IMTUF climbs about 219 ft a mile (41 m per km), steeper than 60% of the 142 100-mile races listed with their climbing.

What other 100-mile races are there in Idaho?

The other upcoming 100-mile race in Idaho is Standhope Ultra Challenge (July 24, 2027).

Other races in Idaho

Every race in Idaho

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