The 2025 event has concluded.






















Partly cloudy throughout the day with rain.
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The Tartan Ottawa International Marathon is Canada’s fastest marathon. This race attracts thousands of participants, including a world-class contingent of pro-athletes every year. The Tartan Ottawa International Marathon is a World Athletics Elite Label Race and one of Canada’s largest Boston Qualifiers. Source
Historical Weather & Results
RunScore

Temp
70°F
Min/Max
56°/70°F
Dew
49°F
Days of Rain
4/18
Wind
9mph
Tap a row for details.
Year | Conditions | Low / High | Rain | Dew | RunScore |
---|---|---|---|---|---|
2024 | ![]() | 58°/ 67° | - | 53° | ![]() |
2023 | ![]() | 59°/ 81° | - | 45° | ![]() |
2022 | ![]() | 58°/ 67° | Light | 51° | ![]() |
2019 | ![]() | 62°/ 70° | - | 56° | ![]() |
2018 | ![]() | 57°/ 69° | - | 49° | ![]() |
2017 | ![]() | 57°/ 75° | - | 53° | ![]() |
2016 | ![]() | 64°/ 82° | - | 59° | ![]() |
2015 | ![]() | 53°/ 80° | - | 42° | ![]() |
2014 | ![]() | 52°/ 75° | - | 54° | ![]() |
2013 | ![]() | 47°/ 60° | - | 34° | ![]() |
2012 | ![]() | 57°/ 72° | - | 45° | ![]() |
2011 | ![]() | 61°/ 68° | Light | 62° | ![]() |
2010 | ![]() | 61°/ 66° | - | 49° | ![]() |
2009 | ![]() | 57°/ 69° | Light | 48° | ![]() |
2008 | ![]() | 50°/ 71° | - | 39° | ![]() |
2007 | ![]() | 52°/ 54° | Light | 51° | ![]() |
2005 | ![]() | 53°/ 68° | - | 53° | ![]() |
2004 | ![]() | 45°/ 65° | - | 38° | ![]() |