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Race Overview
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.
WikipediaFAQ
When is the 2026 Ottawa Marathon?
The 2026 Ottawa Marathon will be held on Sunday May 24, 2026.
Is the Ottawa Marathon a Boston Marathon Qualfier?
Yes, the Ottawa Marathon is an official Boston Marathon qualifier.
Ottawa Marathon Weather History
Ottawa Marathon Weather Averages
Average Temp: 63°, Average Low: 53°, Average High: 73°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 55° | 58° | 60° | 62° | 64° | 66° | 68° | 70° |
| Feel | 55° | 57° | 59° | 62° | 64° | 66° | 68° | 70° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 6mph | 7mph | 7mph | 8mph | 9mph | 9mph | 9mph |
| Dew | 49° | 49° | 48° | 48° | 49° | 49° | 49° | 49° |
| RunScore |  |  | | | | | |  |
Ottawa Marathon 2025
May 25, 2025
Clear conditions throughout the day with rain.
Low: 46°, High: 66°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp |  48° | 51° | 54° | 57° | 58° | 61° | 64° | 63° |
| Feel | 46° | 51° | 54° | 57° | 58° | 61° | 64° | 63° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 4mph | 5mph | 2mph | 5mph | 4mph | 6mph | 8mph |
| Dew | 47° | 47° | 48° | 43° | 46° | 46° | 43° | 44° |
| RunScore | | | | | | | | |
Ottawa Marathon 2024
May 26, 2024
Partly cloudy throughout the day with early morning rain.
Low: 57°, High: 70°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 58° | 59° | 61° | 63° | 65° | 66° | 67° |  67° |
| Feel | 58° | 59° | 61° | 63° | 65° | 66° | 67° | 67° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 2mph | 1mph | 1mph | 5mph | 5mph | 2mph | 3mph | 0mph |
| Dew | 52° | 53° | 53° | 52° | 51° | 54° | 53° | 53° |
| RunScore | | | | | | | | |
Ottawa Marathon 2023
May 28, 2023
Clear conditions throughout the day.
Low: 57°, High: 85°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 59° | 62° | 64° | 67° | 71° | 74° | 77° | 81° |
| Feel | 59° | 62° | 64° | 67° | 71° | 74° | 77° | 80° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 8mph | 9mph | 9mph | 9mph | 10mph | 11mph | 10mph | 10mph |
| Dew | 46° | 43° | 42° | 44° | 44° | 45° | 48° | 47° |
| RunScore | | | | | | | | |
Ottawa Marathon 2022
May 28, 2022
Partly cloudy throughout the day with rain clearing later.
Low: 58°, High: 72°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp |  58° | 59° | 60° | 62° | 62° | 64° | 66° | 67° |
| Feel | 58° | 59° | 60° | 62° | 62° | 64° | 66° | 67° |
| Rain | light | light | - | - | - | - | - | - |
| Wind | 11mph | 10mph | 12mph | 15mph | 13mph | 11mph | 9mph | 7mph |
| Dew | 54° | 54° | 52° | 50° | 49° | 48° | 50° | 51° |
| RunScore | | | | | | | | |
Ottawa Marathon 2019
May 26, 2019
Partly cloudy throughout the day with early morning rain.
Low: 60°, High: 72°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 62° | 65° | 65° | 66° | 67° | 68° | 69° | 70° |
| Feel | 62° | 65° | 65° | 66° | 67° | 68° | 69° | 70° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 8mph | 10mph | 15mph | 16mph | 14mph | 17mph | 19mph | 15mph |
| Dew | 61° | 61° | 58° | 56° | 55° | 54° | 53° | 53° |
| RunScore | | | | | |  | | |
Ottawa Marathon 2018
May 27, 2018
Partly cloudy throughout the day with early morning rain.
Low: 57°, High: 73°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 57° | 57° | 58° | 62° | 62° | 63° | 66° | 69° |
| Feel | 57° | 57° | 58° | 62° | 62° | 63° | 66° | 69° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 10mph | 10mph | 10mph | 8mph | 10mph | 11mph | 9mph | 9mph |
| Dew | 44° | 44° | 45° | 49° | 50° | 52° | 54° | 56° |
| RunScore | | | | | | | | |
Ottawa Marathon 2017
May 28, 2017
Partly cloudy throughout the day.
Low: 53°, High: 76°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 57° | 60° | 65° | 68° | 71° | 73° | 74° | 75° |
| Feel | 57° | 60° | 65° | 68° | 71° | 73° | 74° | 75° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 2mph | 5mph | 2mph | 5mph | 5mph | 7mph | 7mph | 9mph |
| Dew | 53° | 55° | 56° | 54° | 53° | 55° | 50° | 50° |
| RunScore | | | | | | | | |
Ottawa Marathon 2016
May 29, 2016
Partly cloudy throughout the day with rain.
Low: 64°, High: 90°, Moderate Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 64° | 65° | 67° | 69° | 71° | 75° | 78° | 82° |
| Feel | 64° | 65° | 67° | 69° | 71° | 75° | 78° | 83° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 7mph | 8mph | 6mph | 6mph | 6mph | 6mph | 7mph | 6mph |
| Dew | 53° | 55° | 57° | 57° | 59° | 61° | 62° | 65° |
| RunScore | | | | | | | | |
Ottawa Marathon 2015
May 24, 2015
Partly cloudy throughout the day.
Low: 51°, High: 82°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 53° | 55° | 59° | 64° | 70° | 72° | 77° | 80° |
| Feel | 53° | 55° | 59° | 64° | 70° | 72° | 77° | 79° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 6mph | 8mph | 7mph | 7mph | 9mph | 11mph | 9mph | 14mph |
| Dew | 39° | 41° | 42° | 44° | 44° | 43° | 44° | 42° |
| RunScore | | | | | | | | |
Ottawa Marathon 2014
May 25, 2014
Partly cloudy throughout the day.
Low: 48°, High: 78°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 52° | 55° | 60° | 64° | 69° | 69° | 72° | 75° |
| Feel | 52° | 55° | 60° | 64° | 69° | 69° | 72° | 75° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 1mph | 0mph | 2mph | 3mph | 4mph | 5mph | 7mph | 7mph |
| Dew | 51° | 52° | 54° | 54° | 56° | 53° | 56° | 55° |
| RunScore | | | | | | | | |
Ottawa Marathon 2013
May 26, 2013
Partly cloudy throughout the day.
Low: 47°, High: 65°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 47° | 48° | 49° | 50° | 52° | 56° | 58° | 60° |
| Feel | 45° | 45° | 44° | 45° | 52° | 56° | 58° | 60° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 4mph | 8mph | 13mph | 12mph | 12mph | 16mph | 17mph | 16mph |
| Dew | 38° | 34° | 33° | 34° | 34° | 35° | 31° | 30° |
| RunScore | | | | | | | | |
Ottawa Marathon 2012
May 27, 2012
Partly cloudy throughout the day.
Low: 53°, High: 72°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 57° | 60° | 61° | 65° | 67° | 68° | 70° | 72° |
| Feel | 57° | 60° | 61° | 65° | 67° | 68° | 70° | 72° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 4mph | 5mph | 7mph | 9mph | 5mph | 4mph | 3mph | 2mph |
| Dew | 47° | 47° | 45° | 45° | 43° | 42° | 44° | 46° |
| RunScore | | | | | | | | |
Ottawa Marathon 2011
May 29, 2011
Cloudy skies throughout the day with rain in the morning and afternoon.
Low: 59°, High: 75°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 61° | 62° | 63° | 63° | 63° | 63° | 65° | 68° |
| Feel | 61° | 62° | 63° | 63° | 63° | 63° | 65° | 68° |
| Rain | - | light | - | - | - | - | - | light |
| Wind | 2mph | 3mph | 4mph | 1mph | 6mph | 4mph | 1mph | 3mph |
| Dew | 61° | 61° | 61° | 61° | 63° | 63° | 64° | 67° |
| RunScore | | | | | | | |  |
Ottawa Marathon 2010
May 30, 2010
Cloudy skies throughout the day with early morning rain.
Low: 61°, High: 68°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 61° | 61° | 61° | 61° | 61° | 63° | 66° | 66° |
| Feel | 61° | 61° | 61° | 61° | 61° | 63° | 66° | 66° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 4mph | 5mph | 4mph | 9mph | 7mph | 9mph | 10mph | 11mph |
| Dew | 47° | 48° | 50° | 47° | 49° | 50° | 53° | 52° |
| RunScore | | | | | | | | |
Ottawa Marathon 2009
May 24, 2009
Partly cloudy throughout the day with morning rain.
Low: 57°, High: 70°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 57° | 61° | 62° | 64° | 64° | 66° | 68° | 69° |
| Feel | 57° | 61° | 62° | 64° | 64° | 66° | 68° | 69° |
| Rain | - | light | - | - | - | - | - | - |
| Wind | 6mph | 6mph | 11mph | 9mph | 15mph | 17mph | 14mph | 17mph |
| Dew | 52° | 52° | 47° | 45° | 48° | 46° | 48° | 45° |
| RunScore | | | | | | | | |
Ottawa Marathon 2008
May 25, 2008
Partly cloudy throughout the day.
Low: 43°, High: 74°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 50° | 53° | 58° | 61° | 66° | 68° | 70° | 71° |
| Feel | 50° | 53° | 58° | 61° | 66° | 68° | 70° | 71° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 4mph | 6mph | 7mph | 5mph | 6mph | 7mph | 8mph | 8mph |
| Dew | 41° | 41° | 40° | 41° | 39° | 38° | 38° | 37° |
| RunScore | | | | | | | | |
Ottawa Marathon 2007
May 27, 2007
Cloudy skies throughout the day with rain.
Low: 51°, High: 58°, Moderate Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 52° | 54° | 54° | 54° | 54° | 54° | 54° | 54° |
| Feel | 52° | 54° | 54° | 54° | 54° | 54° | 54° | 54° |
| Rain | - | - | - | - | - | - | - | light |
| Wind | 7mph | 9mph | 8mph | 5mph | 5mph | 7mph | 7mph | 9mph |
| Dew | 50° | 49° | 48° | 49° | 51° | 53° | 53° | 54° |
| RunScore | | | | | | | | |
Ottawa Marathon 2005
May 29, 2005
Cloudy skies throughout the day with late afternoon rain.
Low: 48°, High: 68°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 53° | 56° | 57° | 60° | 66° | 67° | 68° | 68° |
| Feel | 53° | 56° | 57° | 60° | 66° | 67° | 68° | 68° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 3mph | 3mph | 3mph | 1mph | 1mph | 7mph | 11mph | 7mph |
| Dew | 51° | 55° | 54° | 54° | 55° | 55° | 53° | 51° |
| RunScore | | | | | | | | |
Ottawa Marathon 2004
May 30, 2004
Clear conditions throughout the day.
Low: 39°, High: 69°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 45° | 51° | 56° | 59° | 62° | 62° | 63° | 65° |
| Feel | 45° | 51° | 56° | 59° | 62° | 62° | 63° | 65° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 1mph | 2mph | 4mph | 5mph | 9mph | 10mph | 9mph | 9mph |
| Dew | 39° | 39° | 37° | 38° | 38° | 35° | 36° | 38° |
| RunScore | | | | | | | | |