How do I enter the TCS Toronto Waterfront Marathon?

Registration is open to all runners on a first-come, first-served basis until the race fills up. No waitlist is maintained once it sells out. You can also secure a bib through the TCS Charity Challenge fundraising program.

Is the TCS Toronto Waterfront Marathon a Boston qualifier?

Yes, it is a Boston qualifier. The course is fast and flat, which makes it a popular choice for runners chasing the BQ standard.

What is the course like?

The course is an out-and-back route along the Lake Ontario waterfront. Elevation change is minimal, with no significant climbs, making it one of the flatter marathon courses in Canada.

What is the time limit?

The time limit is 6 hours from the official start.

How big is the field?

The recent finisher count is around 7,500. It is a mid-size race by major-city standards, with a noticeable concentration of runners chasing qualifying times.

What is the weather typically like on race day?

Race day in mid-October in Toronto is usually cool, with morning temperatures in the mid-40s°F and highs around the upper 50s°F. It is generally good running weather, though wind off the lake can be a factor on the exposed waterfront sections.

Where does the race start and finish?

The race starts and finishes near Nathan Phillips Square in downtown Toronto. Most major hotels are within easy walking distance, and public transit access is straightforward.

Sun, Oct 18 · 2026TorontoSince 2000

TCS Toronto Waterfront Marathon

A fast October morning along Lake Ontario, with a flat waterfront course that draws serious qualifiers and first-timers alike. Toronto delivers a genuine shot at a PR in a city that knows how to put on a race.

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TORONTO WATERFRONT · CA

Toronto Waterfront

SUN, OCT 18

2026

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Race Overview

EST. 2000

Toronto Waterfront runs along the lake, and the course really does deliver on its reputation. The start is right in the heart of downtown near Nathan Phillips Square, and you head out with the skyline behind you and the water to your left. The first half is flat and quick. You'll feel good. Be patient anyway, because the second half is where the race earns or breaks your day on an out-and-back that gives you a long honest look at how you've been pacing.

This is the kind of course you target when you need a specific time. The elevation is minimal, conditions in mid-October are usually cooperative, and the field is full of people chasing something. Registration is open but it fills up, so don't wait around once entries open. If you want a bib and missed the window, the TCS Charity Challenge route is worth looking at. Stay downtown, walk to the start, and save the legs for the race.

Field size

~7.5k

7,538 finishers

BQ rate

6%

Near national average

Time limit

6:00

Tight cutoff

Entry

Open

First-come registration

Course records

Men

2:05:00

Philemon Rono

2019

Women

2:20:44

Waganesh Mekasha

2024

The Course

453 ft total gain

Total ascent

↑453 ft

Total descent

—

Net elevation

—

Highest point

379 ft

Lowest point

245 ft

Course shape

Out and back

Same route, both directions

Toronto Waterfront is an out-and-back on a compact elevation band, with the highest and lowest points separated by only about 130 feet. The course stays largely flat along the lakeshore and through downtown streets, but cumulative rolling undulations add up. Net elevation is positive, meaning the return leg trends very slightly uphill overall. The back half demands patience: what felt easy outbound can grind you down coming home. There are no dramatic climbs to manage, but runners chasing a time should resist the flat early miles pulling them out too fast. Wind off Lake Ontario can be a factor, particularly on exposed waterfront stretches.

DIFFICULTYROLLINGPR-FRIENDLYMODERATE

View official course map Download GPX Past results

Race-Day Weather

10-year median

Low

45°F

High

58°F

30°MARATHON-IDEAL 45–60°80°

What to expect

Mid-October in Toronto usually means a cool, crisp start and a mild afternoon. You will likely need a throwaway layer in the corral and can shed it early. By the back half the temperature is comfortable for running fast, but it is rarely warm enough to be a heat problem. Wind off Lake Ontario is the wild card. On exposed waterfront sections it can slow you down more than the elevation will. Check the forecast the night before and adjust your pacing plan if it looks gusty.

Entry

OPEN

Open registration and charity fundraising via TCS Charity Challenge. Race often sells out; no waitlist maintained.

Register on race site

Logistics

For runners travelling in

Closest airport

YYZ

12 mi

from the start

≈ 19 min transferOn the doorstep

What to expect

Pearson International Airport is about 30 km (20 miles) northwest of downtown Toronto; ground transportation via shuttle, taxi, or transit is available. The race starts and finishes near Nathan Phillips Square in downtown Toronto, close to major hotels and public transit. Stay downtown for convenient access to start/finish.