Runners will face a temperature rise from 55°F to 72°F, with humidity averaging 63% and a dew point of 51°F. A light headwind of 11 mph will persist throughout, making pacing adjustments crucial as temperatures climb. Hydration strategies should be prioritized, especially in the warmer late race segments.

5 AM

6 AM

7 AM

8 AM

9 AM

10 AM

11 AM

12 PM

1 PM

2 PM

3 PM

Pre-raceRace windowPost-race

Pace Calculator

Distance: 26.2mi

Finish time

0:00:00

HH:MM:SS

Pace

—

Enter a finish time to see what race day does to it.

Pace

—

Enter a finish time to see your race-day finish and True Effort, with what the weather, wind and hills do to it.

Common Goals:

Get forecast alerts for Niagara Ultra Races Marathon

We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.

Race Info

The Niagara Ultra Races take place each June in Niagara-on-the-Lake, Ontario, following the Niagara Parkway along the Niagara River toward Niagara Falls. The event offers five distances: 80K, 50K, marathon, half marathon, and 10K. The marathon and half marathon are advertised as Boston Marathon qualifiers. The race is organized by the St. Catharines Roadrunners and Walkers and reached its 32nd running in 2026.

Website

Race weekend

Saturday, June 20

7:00 AMMarathon (26.2 mi)

80K (49.7 mi)

50K (31.1 mi)

Half Marathon (13.1 mi)

10K (6.2 mi)

Course Map

FAQ

When is the 2026 Niagara Ultra Races Marathon?

The 2026 Niagara Ultra Races Marathon will be held on Saturday June 20, 2026.

Is the Niagara Ultra Races Marathon a Boston Marathon Qualifier?

Yes, the Niagara Ultra Races Marathon is an official Boston Marathon qualifier.

What is the time limit for the Niagara Ultra Races Marathon?

The time limit for the Niagara Ultra Races Marathon is 6 hours.

What will the weather be like for the 2026 Niagara Ultra Races Marathon?

The forecast calls for a high of 74°F and a low of 56°F with a 0% chance of rain.

Historical Weather

Based on 14 years of data

Avg Temp

66°F

L:63° H:70°

RunScore

Conditions

Rain Freq

21%

3 of 14 yrs

Wind9mph

Dew55°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2026 Niagara Ultra Races Marathon Becoming cloudy in the afternoon. 2026	59°/68°	-	49°
2025 Niagara Ultra Races Marathon Clear conditions throughout the day with morning rain. 2025	66°/79°	Light	66°
2024 Niagara Ultra Races Marathon Clear conditions throughout the day. 2024	60°/63°	-	52°
2023 Niagara Ultra Races Marathon Clear conditions throughout the day. 2023	61°/67°	-	56°
2022 Niagara Ultra Races Marathon Clearing in the afternoon. 2022	56°/61°	-	45°
2019 Niagara Ultra Races Marathon Partly cloudy throughout the day with late afternoon rain. 2019	64°/65°	-	52°
2018 Niagara Ultra Races Marathon Clear conditions throughout the day. 2018	63°/72°	-	57°
2017 Niagara Ultra Races Marathon Clearing in the afternoon. 2017	71°/80°	-	64°
2016 Niagara Ultra Races Marathon Becoming cloudy in the afternoon. 2016	66°/75°	-	52°
2015 Niagara Ultra Races Marathon Partly cloudy throughout the day. 2015	58°/64°	-	54°
2014 Niagara Ultra Races Marathon Partly cloudy throughout the day with morning rain. 2014	54°/59°	Light	46°
2013 Niagara Ultra Races Marathon Partly cloudy throughout the day with late afternoon rain. 2013	69°/80°	-	60°
2012 Niagara Ultra Races Marathon Partly cloudy throughout the day. 2012	64°/71°	-	55°
2011 Niagara Ultra Races Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2011	65°/71°	Light	59°