Events/TCS Toronto Waterfront Marathon

TCS Toronto Waterfront Marathon

Running

Date

Sun, 17 Oct 2027

Venue

Toronto, Canada

Countdown

October

Distance

42.195km

Total climb

130m

One of the fastest marathons in Canada, and the national championship. 42.195km on closed roads through downtown Toronto and along the Lake Ontario waterfront, finishing on Bay Street by City Hall.

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The course

The route

42.195km on closed roads, starting downtown, out and back along the Lake Ontario waterfront, then looping a dozen-plus neighbourhoods to a finish on Bay Street by Nathan Phillips Square. Around 130m of climbing, essentially flat.

Weather

Mid-October, Toronto

15°CTypical high

10°CTypical low

2°CColdest in 20 years

56%Days with rain

Highs around 15°C and lows around 10°C, but it has dropped to 2°C. Rain on 56% of days.

NASA POWER data, 2006-2025, the week either side of race day

Training

Training for the TCS Toronto Waterfront Marathon

We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.

Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.

Intervals.icu

A flat course that tests pacing, not legs

Typical sessions

42.195km on fast, mostly flat roads: the distance and discipline are the test, not the terrain.

Only two inclines worth naming, the Spadina fly-over and the short Bay Street rise to the finish.

A cool 4 to 12C start with a possible lake breeze off Lake Ontario on the exposed waterfront sections.

2h40 to 5h-plus of continuous effort, so fuelling at 60 to 90g of carbs an hour is non-negotiable.

What your weeks look like

Typical sessions

Marathon-pace long runs of 28 to 35km with 15 to 20km at goal pace, the single most important session.

Long tempo: 40 to 60 min continuous at marathon pace to hold speed on fast roads.

Threshold intervals: 3 to 4 x 3km at threshold pace with 90s recovery.

A full dress rehearsal, 28 to 30km at race pace with exact race-day nutrition and kit.

Not a generic schedule

Typical sessions

Built from your current fitness and the time you actually have

Adapts every week as Beina learns how you respond

Syncs your sessions straight to Garmin and Wahoo

One clear next session, never a wall of spreadsheet

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