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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
70
season
Oct 2026 – Sep 2027
countries
17
next up
Lake Biwa 100

Next up

Course map for Lake Biwa 100
100M
4 days away
Oct 30, 2026
Lake Biwa 100
Komono, Mie, JP34,450 ft
Course map for Javelina Jundred 100 Mile
100M
5 days away
Oct 31, 2026
Javelina Jundred 100 Mile
Fountain Hills, AZ, US6,300 ft
Course map for Grampians Peaks Trail 100 Miler
100M
11 days away
Nov 6, 2026
Grampians Peaks Trail 100 Miler
Halls Gap, VIC, AU23,360 ft
Course map for Rio Del Lago 100 Mile
100M
12 days away
Nov 7, 2026
Rio Del Lago 100 Mile
Granite Bay, CA, US13,870 ft
Course map for Pinhoti 100
100M
12 days away
Nov 7, 2026
Pinhoti 100
Heflin, AL, US14,000 ft
Course map for RMB Ultra-Trail Cape Town 100 Mile
100M
4 weeks away
Nov 20, 2026
RMB Ultra-Trail Cape Town 100 Mile
Cape Town, Western Cape, ZA17,950 ft
Course map for Ultra-Trail Kosciuszko KosciMiler
100M
5 weeks away
Nov 27, 2026
Ultra-Trail Kosciuszko KosciMiler
Jindabyne, NSW, AU17,970 ft
70 races · October 2026 – September 2027
OCTOBER 20262 RACES
FRI
30
OCT
Lake Biwa 100
Komono, Mie, JP34,450 ft
SAT
31
OCT
Javelina Jundred 100 Mile
Fountain Hills, AZ, US6,300 ft
NOVEMBER 20265 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, US14,000 ft
FRI
20
NOV
RMB Ultra-Trail Cape Town 100 Mile
Cape Town, Western Cape, ZA17,950 ft
FRI
27
NOV
Ultra-Trail Kosciuszko KosciMiler
Jindabyne, NSW, AU17,970 ft
FEBRUARY 20271 RACE
SAT
13
FEB
Tarawera Ultra-Trail TMiler
Rotorua, Bay of Plenty, NZ12,470 ft

Frequently asked questions

How many 100 Mile trail races are there?

Trailrace lists 70 upcoming 100 Mile trail races (Oct 2026 – Sep 2027), sorted soonest first.

What is the next 100 Mile race?

The next is Lake Biwa 100 on October 30, 2026 in Komono, Mie, JP.

Which countries host 100 Mile trail races?

These 100 Mile trail races span 17 countries. Use the region filter to narrow the list to a specific country.

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