2027 Toronto Marathon (Spring) - May 2

2027 Toronto Marathon (Spring) - May 2 Countdown

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Race Information

Race2027 Toronto Marathon (Spring) - May 2
CityToronto
Date2027-05-02 at 07:30
Field Size~2,975 runners
Time Limit6 hours
Cutoff pace8:32/km
Course speed
Challenging course Speed index 1.09 — median of the last 4 winners' times against the global same-year median. Winner times track elite fields and prize money, so this reads the course as a proxy, not a pure measurement.
TimezoneAmerica/Toronto
Official SiteToronto Marathon (GoodLife Fitness)

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Race Day Weather

Average Temperature8.6°C / 47°F
Humidity78%
Wind23.1 km/h
Rain Chance47%
Typical ConditionsEarly-May Toronto mornings are cool and changeable, typically 8-14C (46-57F) at the 7:30am start and climbing into the mid-teens by late morning, with a lake breeze off Ontario and a moderate chance of spring showers.

What to Prepare: Near-ideal racing weather, but the start at Mel Lastman Square can feel raw. Wear arm sleeves and a throwaway top, and respect the early rolling hills before the long descent takes over after 12km.

Based on historical averages for race week. Use our Weather Score Calculator and What to Wear Guide for personalized advice.

Wind Impact on Race Day

Wind at 23.1 km/h can affect your marathon pace by 5-15 seconds per kilometer. Headwinds slow you down exponentially — a 20 km/h wind costs more than twice a 10 km/h wind.

Calculate your wind-adjusted pace →

Race-Week Climate

Based on 20 years of race-week weather (2005-2024), MERRA-2 reanalysis

Cooler Typical Warmer
Temperature 5.3°C 8.3°C 12.5°C
Dew point 0.6°C 4.7°C 8.9°C
Wet-day chance: 47% Runnability: 70/100

Data: NASA POWER (MERRA-2 reanalysis), NASA Langley Research Center

Course Profile

Course TypePoint-to-point road marathon
Elevation Gain149m
TerrainRoad
ProfileNet-downhill, dropping roughly 105m from North York to the lakeshore; rolling for the first 12km, then a long descent and a flat, fast second half. About +149m of gain on the way down.
Boston QualifierYes — Check your BQ time

Prepare for 2027 Toronto Marathon (Spring) - May 2

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Frequently Asked Questions

When is the 2027 Toronto Marathon and what time does it start?

The GoodLife Toronto Marathon is the spring race, held on the first Sunday of May. The 2027 edition is expected on Sunday, May 2, 2027, with a 7:30am gun start from Mel Lastman Square in North York. Confirm the exact date on the official site once it is announced, as it has moved a day or two year to year.

Is this the same as the Toronto Waterfront Marathon?

No. This is the spring GoodLife Toronto Marathon in early May, a point-to-point net-downhill race from North York to the lakefront. The TCS Toronto Waterfront Marathon is a separate, larger event held downtown in October on a flatter out-and-back course. Many runners searching 'Toronto Marathon' want this faster spring race for a personal best or a Boston time.

Is the Toronto Marathon a Boston qualifier?

Yes. The course is AIMS-certified, so a finishing time counts toward Boston qualifying, and the net-downhill profile makes it one of Canada's stronger BQ courses (about 12% of finishers qualified in recent years). Check your standard with the Boston qualifying calculator, then plan your splits with the pace calculator.

Is the course really downhill, and how should I pace it?

The point-to-point route drops roughly 105m net from North York to the Ontario lakeshore, but it is rolling for the first 12km before the long descent. Bank nothing on the early hills, then let the downhill carry you on the flat, fast back half. Use the race time predictor to set a realistic, slightly aggressive goal for a net-downhill course.

What is the course time limit?

The marathon has a 6-hour course limit, with an intermediate cutoff of reaching 27.5km by 11:20am. Six hours works out to roughly 8:32 per kilometre (about 13:44 per mile), giving walk-run finishers a comfortable margin. Plug your goal into the finish-time calculator to confirm you stay inside both cutoffs.

How much does it cost and how do I register?

Registration is online through Race Roster, with no lottery. Recent full-marathon entry has run roughly C$130 early-bird up to about C$190 closer to race day, plus tax. There is no qualifying standard to enter, so signing up early locks in the lowest tier.

Do international runners need a visa to enter Canada?

It depends on your passport. Visa-exempt travellers (most of Europe, Japan, Australia) need only an electronic eTA, applied for online before flying. Travellers from countries that require a visa must obtain a Canadian visitor visa in advance. Check current requirements with the Canadian government before booking flights to Toronto Pearson (YYZ).

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