2017 - 2018 Ontario Ultramarathon Calendar

Browse our Ultramarathon Calendar for races organized in Ontario among 17 races.

Refine by

17 races

Conquer the Canuck Marathon Ultra Trail Weekend

50 km
June 10, 2017 Race day in 14 days
Canada / Ontario / Cambridge
Ultramarathon - 50 kilometers
Trail

Niagara Ultra

50 Km
June 17, 2017 Race day in 21 days
Canada / Ontario / Niagara-on-the-Lake
Ultramarathon - 50 kilometers
Fast

The North Face Endurance Challenge Ontario

50 Km
July 15, 2017 Race day in about 2 months
Canada / Ontario / Blue Mountain Resort
Ultramarathon - 50 kilometers
Trail

The North Face Endurance Challenge Ontario

GORE-TEX 50 Mile
July 15, 2017 Race day in about 2 months
Canada / Ontario / Blue Mountain Resort
Ultramarathon - 50 miles
Hilly Trail

Haliburton Forest Trail Race

100 Mile
September 09, 2017 Race day in 4 months
Canada / Ontario / Haliburton Forest
Ultramarathon - 100 miles
Trail

Haliburton Forest Trail Race

50 km
September 09, 2017 Race day in 4 months
Canada / Ontario / Haliburton Forest
Ultramarathon - 50 kilometers
Trail

Haliburton Forest Trail Race

50 Mile
September 09, 2017 Race day in 4 months
Canada / Ontario / Haliburton Forest
Ultramarathon - 50 miles
Trail

That Dam Hill

50 Mile
September 16, 2017 Race day in 4 months
Canada / Ontario / Springbank Park, London
Ultramarathon - 50 miles

The Bad Thing Race - 25km & 50km

50 km
October 21, 2017 Race day in 5 months
Canada / Ontario / Goderich
Ultramarathon - 50 kilometers
Trail

Run Off the Grid Trail Run

Run Off the Grid 50K Trail Run
September 24, 2016 The race has already taken place.
Canada / Ontario / Mattawa
Ultramarathon - 50 kilometers
Fun Trail

Run for the Toad

Run for the Toad 50K
October 01, 2016 The race has already taken place.
Canada / Ontario / Paris
Ultramarathon - 50 kilometers
Trail

Pick Your Poison Trail Run

Pick Your Poison 50K Trail Run
April 29, 2017 The race has already taken place.
Canada / Ontario / Orillia
Ultramarathon - 50 kilometers
Trail

Seaton Trail Race

Seaton Trail 50 km Trail
May 13, 2017 The race has already taken place.
Canada / Ontario / Pickering
Ultramarathon - 50 kilometers
Trail

Sulphur Springs Trail Race

200 Mile
May 25, 2017 The race has already taken place.
Canada / Ontario / Ancaster
Ultramarathon - 200 miles
Trail Relay

Sulphur Springs Trail Race

100 Mile
May 27, 2017 Race day !
Canada / Ontario / Ancaster
Ultramarathon - 100 miles
Trail Relay