Events
Race Directors

Ultra Running Events in Ontario

All 50 KM 50 Miles 100 KM 100 Miles 6 Hours 12 Hours 24 Hours

Upcoming Events

Date Event City Distances
06/13/26 Boomerang Trail Run Batawa 6 Hours
06/13/26 Rainbow Trail Run Alliston 48 KM , 60 KM
06/20/26 Niagara Ultra Niagara On The Lake 50 KM , 50 Miles
06/20/26 Mad Trapper Backyard Ultra Ottawa Backyard
06/20/26 Sunburn Solstice Run Mount Hope 15 Hours
06/27/26 Utopia Backyard Ultra Utopia Backyard , 6 Hours , 12 Hours , 24 Hours
06/27/26 High Noon 24Hr Trail Race & Relay Thunder Bay 4 Hours , 6 Hours , 12 Hours , 24 Hours
07/04/26 Limberlost Challenge Lake of Bays 56 KM
07/11/26 Summit 700 Trail Runs Blue Mountain 50 KM
07/11/26 First Blaze Trail Race Milton 50 KM
07/25/26 Tally in the Valley Dundas 6 Hours , 12 Hours , 12 Hours , 24 Hours , 100 Miles
08/01/26 Persistence Backyard Ultra Arva Backyard
08/15/26 Middle Path Ultra and Trail Race Peterborough 52 KM
08/22/26 The Devil's Key Trail Race Duntroon 66.6 KM
09/12/26 Haliburton Forest Trail Race West Guildford 50 KM , 50 Miles , 100 Miles
09/19/26 That Dam Hill London 6 Hours , 12 Hours , 24 Hours
09/19/26 Sugarbush Shenanigans Hillier 6 Hours , 12 Hours , 12 Hours , 24 Hours
09/25/26 Blue Bully Ultra Blue Mountain Resort 50 KM
09/26/26 Run Off-The-Grid Mattawa 50 KM
09/26/26 The Tail Chaser Caledon 6 Hours , 12 Hours , 24 Hours
10/03/26 UpRiver Running Fall Races Thunder Bay 50 KM
10/10/26 Sticks n' Stones Trail Race Dundas 50 KM
10/17/26 Phoenix Trail Races London 50 KM
10/17/26 Creemore Vertical Challenge Creemore 55 KM , 50 Miles
10/24/26 Moonshine Backyard Ultra Arnstein Backyard
11/07/26 The Beav Trail Race Milton 50 KM

Past Events

Date Event City Distances
05/30/26 Great Mansfield Outdoors Mansfield 50 KM , 100 KM
05/23/26 Sulphur Springs Trail Race Ancaster 50 KM , 50 Miles , 100 KM , 100 Miles , 200 Miles
05/09/26 Conquer the Canuck Marathon Ultra Trail Weekend Cambridge 12 Hours , 50 KM
05/02/26 Rugged Raccoon Trail Races St Marys 50 KM
05/02/26 GEI Pure Grit Trail Race Hepworth 52.5 KM , 44.1 KM , 6 Hours
04/25/26 Pick Your Poison Trail Run Barrie 50 KM
04/18/26 FitFarm Little Loop Ultra Strathory 6 Hours
04/18/26 The Foxtail Rail Trail Race Dundas 50 KM , 50 Miles , 100 KM , 100 Miles
11/16/25 Fat Ass Trail Run Batawa 6 Hours , 50 KM
10/25/25 The Bad Thing Goderich 50 KM
09/20/25 Monster of Mazinaw Cloyne 43 KM , 60 KM
05/17/25 Big D’s Backyard Ultra and Trail Race Lindsay Backyard , 6 Hours , 12 Hours , 24 Hours
05/17/25 Coach D's Backyard Ultra Lindsay 6 Hours , 12 Hours , 24 Hours
08/24/24 Stone Cairn Trail Race Niagara on the Lake 50 KM , 50 Miles
06/03/23 Fiddle50 Shelburne 50 KM , 50 Miles , 100 KM , 160 KM
10/30/22 Horror Trail Race Waterloo 4 Hours , 6 Hours , 50 KM
09/24/22 Ultra Trail Stokely Creek Goulais River 56 KM , 85 KM , 100 Miles
09/17/22 Chase the Coyote Trail Race Mono 50 KM
05/21/21 Coolsaet GO 50k Hamilton 50 KM
09/19/20 Kingston Self-Transcendence Kingston 6 Hours
05/09/20 Seatons Pickering 50 KM , 33.1 Miles , 50 Miles
01/04/20 Stride Inside Indoor Track Race Guelph 1 Hours , 3 Hours , 6 Hours
10/05/19 Run for the Toad Paris 50 KM
10/14/17 Vulture Bait Trail Races London 50 KM
07/15/17 The North Face Endurance Challenge Ontario Blue Mountains 50 KM , 50 Miles
01/07/17 Run4RKids Indoor Track Race toronto 6 Hours , 8 Hours , 50 KM
07/23/16 Dirty Girls' Trail Race Mansfield 6 Hours , 12 Hours , 24 Hours , 48 Hours
08/03/15 Tourne en Rond Quebec 6 Hours , 12 Hours
07/04/15 Laura Secord Memorial 100k/50k/25k Niagara Falls 25 KM , 50 KM , 100 KM
09/28/13 Self Transcendence Ottawa 24 Hours
12/01/12 Creemore Horizontal Creemore 100 Miles
09/29/12 Self-Transcendence 6 Hr, 12 Hr & 24 Hr Race Ottawa 6 Hours , 12 Hours , 24 Hours
04/23/11 Jerseyville Fat Ass Jerseyville 100 Miles
05/10/08 Ganaraska Trail Run Orillia 50 KM , 80 KM
05/03/08 Toronto Ultra Toronto 50 KM , 100 KM
10/22/05 The Crystal St. Marie 50 KM
07/16/05 Damn Tuff Ruff Bluff Run Toronto 50 KM
01/01/03 Sri Chinmoy New Year's 50K Ottawa 50 KM
10/06/01 Slough Of Despond Kingston 50 KM
04/15/00 Ascension Hamilton 6 Hours , 50 KM
10/30/88 Georgian Bay 50-Mile Fun Run Owwen Sound 50 KM , 50 Miles
10/08/88 Rainbow Country 48-hour Run Chelmsford 48 Hours
09/25/88 Golden Horseshoe Fifty Miler Hamiton 50 Miles
09/04/88 Patenauge's Choise St. Jacobs 50 KM , 50 Miles , 100 KM
08/27/88 Burlington Runners Burlington 12 Hours , 24 Hours , 50 Miles
06/21/88 Ontario Northland 161 Km Challenge Chelmsford 100 Miles
05/14/88 Hockley Hills 50 Mile Trail Run Orangeville 50 Miles
04/30/88 Sagamok 60 Km Race Massey 60 KM
03/05/88 La Cloche Classic 50 Km Espanola 50 KM
01/30/88 Valley 24-hour Indoor Run Hanmer 24 Hours

Weekly Newsletter

A roundup of the week's content and most recent race results. Sent once a week on Thursday.

Recent Results

More Miles Last One Standing Challenge
Knoxville, MD - 66 finishers
Backyard | Backyard
Yankee Springs Trail Run
Middleville, MI - 60 finishers
100 KM | 50 KM
Weld Your Mettle Running Festival
Windsor, CO - 27 finishers
100 Miles | 100 KM | 50 Miles | 50 KM
Echo Valley Runs
Chelan, WA - 80 finishers
50 KM
Worlds End Ultramarathons
Forksville, PA - 299 finishers
100 KM | 50 KM
Mohican Trail Run
Loudonville, OH - 251 finishers
100 Miles | 50 Miles
The Full Mo
Sheridan, IN - 190 finishers
50 KM
Cinderella Trail - Spring
Oakland, CA - 28 finishers
50 KM
Hoof It on the Hill
Cherry Creek, NY - 9 finishers
52 KM
Smith Rock Classic
Terrebonne, OR - 185 finishers
50 Miles | 50 KM
View All Results