What to race in this fall
69% of Canada's marathons run in September and October. Here is what the weather has actually done on those race days for the past ten years, and what the people who test shoes for a living concluded about the shoes you would race them in.
What a Canadian fall race day is really like
| Month | Races | Typical high / low | Days with rain |
|---|---|---|---|
| September | 430 | 20°C / 11°C | 30% |
| October | 285 | 15°C / 7°C | 35% |
| November | 57 | 7°C / 0°C | 39% |
Averaged across 495 upcoming races that have ten years of local weather history behind them. Recomputed daily with the calendar.
That is close to perfect racing weather, and it changes two things about shoe choice. Cool is fine — every shoe below is built for exactly this and none of them are heat-limited at 15°C. Wet is the real variable: about a third of Canadian fall race days see rain, and a super shoe's outsole is cut back to save weight. If your race is coastal or late October, grip deserves more thought than stack height.
What the testers found
RunRepeat cuts shoes in half and measures them in a lab — the weights and stack heights below are their measured figures rather than the manufacturers' claims, which is exactly why they are worth reading. Outside long-term wear-testing by staff runners.
ASICS Metaspeed Sky Tokyo
Best overall“Unbeatable on course and in the lab” — RunRepeat
The all-rounder the lab testers put first outright.
Nike Alphafly 3
Best for the marathon“Blends speed and comfort into perfect harmony” — RunRepeat
Also Outside's pick as the best all-around carbon racer, for a ride they call bouncy but relatively stable.
adidas Adizero Adios Pro 4
Best for first-time super-shoe buyers“Swift without being harsh on the feet” — RunRepeat
The softest of the super shoes in Outside's testing, and the least punishing if you have never raced in a plate.
Saucony Endorphin Pro 5
Best for heel strikers“Suits heel strikers best” — RunRepeat
The tallest drop in the group, which is the number that matters if you land heel-first.
PUMA Fast-R Nitro Elite 3
Best energy return“Stood above the rest” — RunRepeat
Topped the lab's energy-return measurement of the group.
Nike Streakfly 2
Best for 5K and 10K“Track-like features” — RunRepeat
Deliberately low and light. Wrong shoe for a marathon, right one for a fast 5K.
For scale: across the whole category RunRepeat measures an average super shoe at 196 g, 37.5 mm of heel stack and 76.1% energy return. Anything much heavier than that is not really in this class, whatever the marketing says.
Then go and find the race
There are 55 marathons on the Canadian calendar right now, 38 of them in the next two months. If you have not picked one yet, the season planner builds the tune-up races backwards from whatever you choose, and every race page shows what the weather usually does on that day in that town.
Fall racing shoes — FAQ
- What actually makes these different from a normal trainer?
- Height, foam and a plate. RunRepeat measures the average shoe in this class at 37.5 mm of heel stack and 76.1% energy return, at 196 g — an everyday trainer is heavier, lower and returns less. That is the trade: you get speed, and you give up durability and a lot of money.
- Do I need a carbon-plated shoe to run a fall marathon?
- No. They measurably help at speed, and they also cost several hundred dollars and wear out faster than a trainer. If you are racing your first marathon, the shoe is not what stands between you and the finish. Fit matters more than plate.
- What temperature should I expect at a Canadian fall race?
- Across 453 races with local weather history, September averages a 20°C high and October 15°C, with roughly a third of days seeing rain. That is close to ideal racing weather — the risk is dressing for the temperature at the start line rather than the one you will be running in.
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