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Upcoming 100 Mile Trail Races & Ultramarathons

Browse upcoming 100 Mile trail races and ultramarathons from around the world. Filter by region or switch to the calendar to plan your season — each race links through to its course, elevation profile, and registration details.

races
62
season
Sep 2026 – Jul 2027
countries
14
next up
Wasatch Front 100 Mile Endurance Run

Next up

Course map for Wasatch Front 100 Mile Endurance Run
100M
Today
Sep 11, 2026
Wasatch Front 100 Mile Endurance Run
Kaysville, UT, US20,670 ft
Course map for Superior Fall Trail Race 100 Mile
100M
Today
Sep 11, 2026
Superior Fall Trail Race 100 Mile
Lutsen, MN, US17,350 ft
Course map for Pirin Ultra 160K
100M
Today
Sep 11, 2026
Pirin Ultra 160K
Bansko, BG35,490 ft
Course map for Mogollon Monster 100 Mile
100M
Tomorrow
Sep 12, 2026
Mogollon Monster 100 Mile
Pine, AZ, US15,900 ft
Course map for Run Rabbit Run
100M
7 days away
Sep 18, 2026
Run Rabbit Run
Steamboat Springs, CO, US
Course map for I Feel Slovenia 120K
100M
7 days away
Sep 18, 2026
I Feel Slovenia 120K
Kranjska Gora, SI19,330 ft
Course map for Grindstone Running Festival 100 Mile
100M
7 days away
Sep 18, 2026
Grindstone Running Festival 100 Mile
Mount Solon, VA, US20,180 ft
62 races · September 2026 – July 2027
SEPTEMBER 202615 RACES
FRI
11
SEP
Wasatch Front 100 Mile Endurance Run
Kaysville, UT, US20,670 ft
FRI
11
SEP
Superior Fall Trail Race 100 Mile
Lutsen, MN, US17,350 ft
FRI
11
SEP
Pirin Ultra 160K
Bansko, BG35,490 ft
SAT
12
SEP
Mogollon Monster 100 Mile
Pine, AZ, US15,900 ft
FRI
18
SEP
Run Rabbit Run 100 - Hares
Steamboat Springs, CO, US20,390 ft
FRI
18
SEP
I Feel Slovenia 120K
Kranjska Gora, SI19,330 ft
FRI
18
SEP
Grindstone Running Festival 100 Mile
Mount Solon, VA, US20,180 ft
FRI
18
SEP
Run Rabbit Run 100 - Tortoises
Steamboat Springs, CO, US20,390 ft
SAT
19
SEP
Plain 100 Mile
Leavenworth, WA, US21,000 ft
SAT
19
SEP
IMTUF 100 Mile
McCall, ID, US22,000 ft
SAT
19
SEP
Mountain Lakes 100
Olallie Lake, OR, US11,700 ft
FRI
25
SEP
Ultra Trail Métropole Nice Côte d'Azur - 100M
Nice, Provence-Alpes-Côte d'Azur, FR27,930 ft
FRI
25
SEP
The Bear 100 Mile Endurance Run
Logan, UT, US22,820 ft
FRI
25
SEP
Karkloof 100 Miler
Howick, KwaZulu-Natal, ZA10,800 ft
SAT
26
SEP
Sangre de Cristo Trail Festival 100 Mile
Westcliffe, CO, US16,690 ft
OCTOBER 20269 RACES
SAT
3
OCT
Angeles Crest 100 Mile Endurance Run
Wrightwood, CA, US25,760 ft
SAT
3
OCT
Arkansas Traveller 100 Mile
Perryville, AR, US12,000 ft
FRI
9
OCT
Kodiak Ultra Marathons 100 Mile
Big Bear Lake, CA, US14,390 ft
FRI
9
OCT
OG Yeti 100 Mile Endurance Run
Abingdon, VA, US3,000 ft
SAT
17
OCT
Autumn 100
Goring-on-Thames, Oxfordshire, GB5,000 ft
FRI
23
OCT
No Business 100
Jamestown, TN, US14,500 ft
FRI
30
OCT
Lake Biwa 100
Komono, Mie, JP32,270 ft
FRI
30
OCT
Mallorca SDT - Serra de Tramuntana
Sóller, Illes Balears, ES17,750 ft
SAT
31
OCT
Javelina Jundred 100 Mile
Fountain Hills, AZ, US6,300 ft
NOVEMBER 20264 RACES
FRI
6
NOV
Grampians Peaks Trail 100 Miler
Halls Gap, VIC, AU23,360 ft
SAT
7
NOV
Rio Del Lago 100 Mile
Granite Bay, CA, US13,870 ft
SAT
7
NOV
Pinhoti 100
Heflin, AL, US18,560 ft
FRI
20
NOV
RMB Ultra-Trail Cape Town 100 Mile
Cape Town, Western Cape, ZA17,950 ft

Frequently asked questions

How many 100 Mile trail races are there?

Trailrace lists 62 upcoming 100 Mile trail races (Sep 2026 – Jul 2027), sorted soonest first.

What is the next 100 Mile race?

The next is Wasatch Front 100 Mile Endurance Run on September 11, 2026 in Kaysville, UT, US.

Which countries host 100 Mile trail races?

These 100 Mile trail races span 14 countries. Use the region filter to narrow the list to a specific country.

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