Toronto Waterfront Marathon

Toronto Waterfront Marathon 2026 Course Analysis

Toronto Waterfront Marathon is a full marathon held in Toronto, Canada, scheduled for Sunday 18 October 2026. The course is run on road surface with 57m of total elevation gain, reaching a maximum altitude of 114m above sea level. For registration and full race details, visit the official Toronto Waterfront Marathon website.

Elevation Profile

This is a very flat course with only 57m of total elevation gain across the full distance. The course ranges from 77m to 114m above sea level — a 37m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.

Expected Race Day Weather

Based on historical weather data for October, the expected race day conditions are as follows. Moderate temperatures between 12°C and 20°C are expected. While comfortable for most runners, those targeting fast times should pay attention to hydration, as these temperatures can impact performance over the full distance. There is a moderate chance of rain (33%). Runners may want to prepare for wet conditions but shouldn't expect persistent rainfall.

Surface Type: Road

Toronto Waterfront Marathon is run on road surfaces, which provide the fastest and most predictable conditions for marathon running. Road courses allow for consistent pacing and are typically the best choice for runners targeting a personal best time.

How Difficult Is Toronto Waterfront Marathon?

Our difficulty rating for Toronto Waterfront Marathon is calculated using a model that combines elevation gain, temperature impact, and surface type. Use the difficulty calculator above to enter your target finish time and see exactly how many minutes this course would add or subtract compared to a perfectly flat, cool, road-based marathon. Faster runners and slower runners are affected differently by the same course conditions, so the difficulty is personalised to your pace.

Looking for an easier marathon or a tougher challenge? You can also compare Toronto Waterfront Marathon against other marathons to find the right race for your goals.