Summer races in Canada (2027)
59 races have a confirmed date between June 1 and August 31, 2027, and 249 more ran last summer and have not re-announced — so 81% of the summer races on this page have no 2027 date yet. Summer dates land through the winter and spring, and this page fills in nightly as they do.
Two kinds of listing on this page. Every date shown is one an organizer has published. The second list is different: those races ran last summer and have not yet said when they run in 2027, so they are filed under the month they usually run, with no date attached. A guessed date shown as a real one would be worse than no date at all.
Summer is a multisport season
Across the 308 races on the summer calendar, 41 are triathlons or duathlons, 25 are swims or swimruns and 19 are cycling events, against 5 that include a full marathon. 47% have a 5K and 31% a 10K, and 30 include an ultra distance.
Where summer racing happens
Ontario holds 53% of the summer races on this page, followed by British Columbia with 11%.
Read these as the shape of the season rather than a complete count. The Manitoba Marathon is not on this calendar yet. Quebec (12% of the whole calendar, 4% here), Manitoba (3% of the whole calendar, 1% here) and New Brunswick (4% of the whole calendar, 1% here) are under-counted: races there mostly reappear here only once a new date is published, so expect them to fill in as dates arrive.
Already on the summer calendar
The confirmed summer races offering the most distances so far, one per event name.
- 1Trail La Clinique Du Coureur
June 5, 2027 · Lac-Beauport, Quebec · 50km / 42km / 40km / 30km
- 2Notos Ultra Trail
June 12, 2027 · Victoriaville, Quebec · 65km / 45km / 30km / 20km
- 3The Whole Enchilada
June 19, 2027 · Uxbridge, Ontario · 50km / 25km / 8km / 4km
- 4Défi des Escaliers de Québec Fizz 2027
June 19, 2027 · Québec, Quebec · 19km / 14km / 9km / 4km
- 5Community Strong Race Weekend
June 20, 2027 · Sault Ste. Marie, Ontario · 60km / 42km / 21km / 10km
- 6Québec Mega Trail
July 4, 2027 · Beaupré, Quebec · 135km / 80km / 75km / 65km
- 7Sinister 7 Ultra
July 10, 2027 · Crowsnest Pass, Alberta · 100mi / 50mi / 50km / 21km
- 82027 Peach Classic Triathlon
July 11, 2027 · Penticton, British Columbia · 51km / 41km / 25km / 17km
- 92027 Ryder Hesjedal's Tour de Victoria
August 14, 2027 · Victoria, British Columbia · 155km / 133km / 95km / 77km
- 10Défi d'eau libre
August 15, 2027 · Sainte-Catherine-de-la-Jacques-Cartier, Quebec · 10km / 5km / 2km / 1km
What usually runs, month by month
249 races ran last summer and have not yet published a 2027 date. Grouped by the month they last ran, with the races offering the most distances first.
Usually June · 93
- - 402 Squadron Grizzly Ride — Oakbank, MBUsually runs in June · 2027 date not announced
- Niagara Ultra — Niagara-on-the-Lake, ONUsually runs in June · 2027 date not announced
- ELEVATE, Kelso Conservation — Milton, ONUsually runs in June · 2027 date not announced
- Rainbow Trail Run — Simcoe County, ONUsually runs in June · 2027 date not announced
- WELLAND Open Water Swim and SwimRun Challenge — Welland, ONUsually runs in June · 2027 date not announced
- WHEELS — Milton, ONUsually runs in June · 2027 date not announced
- Buttertart Trot — Midland, ONUsually runs in June · 2027 date not announced
- Forest City Cycling Challenge — London, ONUsually runs in June · 2027 date not announced
- Krista Johnson Memorial Run — Pembroke, ONUsually runs in June · 2027 date not announced
- Look Out Trail Race — North Bay, ONUsually runs in June · 2027 date not announced
- Mo's Journey — Stayner, ONUsually runs in June · 2027 date not announced
- Rotary Huron Shore Run — Southampton, ONUsually runs in June · 2027 date not announced
- Waterloo 10 KM Classic — Waterloo, ONUsually runs in June · 2027 date not announced
- 39th Annual Run/Walk/Bike — Sarnia, ONUsually runs in June · 2027 date not announced
- 42nd Annual Brantford Rotary Classic Run — Brantford, ONUsually runs in June · 2027 date not announced
And 78 more that usually run in June.
Usually July · 73
- Jerome Classic — Burnaby, BCUsually runs in July · 2027 date not announced
- Mudskipper Ontario SwimRun Championships Parry Sound and the Parry Sound Open Water Swim — Parry Sound, ONUsually runs in July · 2027 date not announced
- Raven50 Ultra — Whitehorse, YTUsually runs in July · 2027 date not announced
- St. Donat Mudskipper Quebec SwimRun Championships and Open Water Swim — Saint-Donat-de-Montcalm, QCUsually runs in July · 2027 date not announced
- Summit 700 Trail Runs — Grey County, ONUsually runs in July · 2027 date not announced
- The First Blaze Trail Race — Milton, ONUsually runs in July · 2027 date not announced
- Trail Hub Bike Fest — Uxbridge, ONUsually runs in July · 2027 date not announced
- Apex Trail Run and Bike — Greater Sudbury, ONUsually runs in July · 2027 date not announced
- The Alpenglow 100 — Valemount, BCUsually runs in July · 2027 date not announced
- The Coldwater Classic — Thompson-Nicola, BCUsually runs in July · 2027 date not announced
- Across the Lake Swim Kelowna — Kelowna, BCUsually runs in July · 2027 date not announced
- Across the Lake Swim Osoyoos — Osoyoos, BCUsually runs in July · 2027 date not announced
- Across the Lake Swim Thetis Lake — View Royal, BCUsually runs in July · 2027 date not announced
- Across the Lake Swim Westwood Lake — Nanaimo, BCUsually runs in July · 2027 date not announced
- BLACK GOLD BRUTE OBSTACLE COURSE RACE — Drayton Valley, ABUsually runs in July · 2027 date not announced
And 58 more that usually run in July.
Usually August · 83
- 24 Hour To Empower Running Challenge — Barrie, ONUsually runs in August · 2027 date not announced
- XTERRA Sleeping Giant - — Thunder Bay, ONUsually runs in August · 2027 date not announced
- Gran Fondo Lake Huron — Southampton, ONUsually runs in August · 2027 date not announced
- Mudskipper Canadian SwimRun Championships - Milton and the Milton Open Water Swim — Milton, ONUsually runs in August · 2027 date not announced
- Stokely Creek Trail Jam — Goulais River, ONUsually runs in August · 2027 date not announced
- Kawartha Lakes Classic Cycling Tour — Kawartha Lakes, ONUsually runs in August · 2027 date not announced
- Middle Path Trail Race — Peterborough County, ONUsually runs in August · 2027 date not announced
- Nanaimo Open Water Swim and SwimRun Challenge — Nanaimo, BCUsually runs in August · 2027 date not announced
- Roots and Rocks Trail Run — Greater Sudbury, ONUsually runs in August · 2027 date not announced
- Subaru TriLobster Multi-Sport Festival — Summerside, PEUsually runs in August · 2027 date not announced
- Welland Canal Open Water Swim — Welland, ONUsually runs in August · 2027 date not announced
- Bluewater International Gran Fondo — Sarnia, ONUsually runs in August · 2027 date not announced
- Bonshaw Trail Races — Prince Edward IslandUsually runs in August · 2027 date not announced
- Canaqua Sports Mid-Summer Classic - Welland — Welland, ONUsually runs in August · 2027 date not announced
- Coureurs de Bois Trail Race — Petawawa, ONUsually runs in August · 2027 date not announced
And 68 more that usually run in August.
The heat is the variable
Ten-year weather normals for the week and town of 227 of the 308 summer races; the rest are in places without a weather record. 67% of July race-weeks have a typical high of 25°C or more, and 49% of August's.
| Month | Typical high | Typical low | Days wet | Races measured |
|---|---|---|---|---|
| June | 23°C | 13°C | 39% | 92 |
| July | 25°C | 16°C | 37% | 61 |
| August | 24°C | 16°C | 34% | 74 |
The spread inside one season is the point: race week in Kelowna in July typically peaks at 32°C, while St. John's in June sits at 13°C. Kit that is right for one is wrong for the other.
Daily records 2016–2025 via Open-Meteo. What past years did, not a forecast.
The busiest summer weekends so far
Counting only races with a confirmed date — the usual-month list has no dates to count.
- Weekend of June 5, 202710 races
- Weekend of June 19, 20278 races
- Weekend of August 7, 20275 races
- Weekend of June 12, 20274 races
Racing through summer
2 summer marathons have a confirmed date so far, and for most runners summer is the training block rather than the target — the base that the fall races are built on. Race early in the day when you can, and plan fluids around the day's high rather than the start-line temperature.
Browse the full calendar, plan with the season planner, or see what to run trails in.