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Race Overview
The City of Trees Marathon is held each October in Boise, Idaho, with a marathon, half marathon, 10K and 5K. The courses use the Boise Greenbelt, and in 2026 the start and finish were at Boise State University Stadium. The race is organized by the Boise nonprofit SoleKIDs and has a 6-hour marathon limit.
WikipediaFAQ
When is the 2027 City of Trees Marathon?
The 2027 City of Trees Marathon will be held on Sunday October 10, 2027.
Is the City of Trees Marathon a Boston Marathon Qualfier?
No, the City of Trees Marathon is NOT a Boston Marathon qualifier.
What is the time limit for the City of Trees Marathon?
The time limit for the City of Trees Marathon is 6 hours.
City of Trees Marathon Weather History
City of Trees Marathon Weather Averages
Average Temp: 57°, Average Low: 48°, Average High: 68°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 49° | 50° | 53° | 57° | 60° | 63° | 66° |
| Feel | 46° | 47° | 52° | 56° | 60° | 63° | 66° |
| Rain | - | - | - | - | - | - | - |
| Wind | 8mph | 9mph | 9mph | 8mph | 10mph | 10mph | 11mph |
| Dew | 32° | 33° | 33° | 33° | 34° | 34° | 34° |
| RunScore |  | | | | | | |
City of Trees Marathon 2026
Oct 11, 2026
Partly cloudy throughout the day with late afternoon rain.
Low: 44°, High: 56°, Light Rain
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp |  45° | 45° |  45° | 49° | 51° | 52° | 54° |
| Feel | 40° | 38° | 40° | 44° | 51° | 52° | 54° |
| Rain | - | - | - | - | - | - | - |
| Wind | 10mph | 14mph | 11mph | 13mph | 15mph | 16mph | 16mph |
| Dew | 28° | 28° | 28° | 28° | 29° | 29° | 29° |
| RunScore | |  | | | | | |
City of Trees Marathon 2025
Oct 11, 2025
Clear conditions throughout the day.
Low: 46°, High: 62°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 46° | 47° | 50° | 51° | 54° | 55° | 58° |
| Feel | 43° | 45° | 50° | 51° | 54° | 55° | 58° |
| Rain | - | - | - | - | - | - | - |
| Wind | 7mph | 5mph | 8mph | 7mph | 14mph | 11mph | 13mph |
| Dew | 35° | 37° | 36° | 36° | 35° | 35° | 35° |
| RunScore | |  | | | | | |
City of Trees Marathon 2024
Oct 12, 2024
Clear conditions throughout the day.
Low: 49°, High: 75°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 51° | 52° | 57° | 64° | 67° | 71° | 73° |
| Feel | 51° | 52° | 57° | 64° | 67° | 71° | 73° |
| Rain | - | - | - | - | - | - | - |
| Wind | 5mph | 6mph | 1mph | 3mph | 3mph | 4mph | 4mph |
| Dew | 35° | 35° | 37° | 37° | 40° | 40° | 41° |
| RunScore | | | | | | | |
City of Trees Marathon 2023
Oct 14, 2023
Partly cloudy throughout the day.
Low: 53°, High: 72°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 53° | 56° | 57° | 56° | 64° | 67° | 70° |
| Feel | 53° | 56° | 57° | 56° | 64° | 67° | 70° |
| Rain | - | - | - | - | - | - | - |
| Wind | 5mph | 8mph | 14mph | 9mph | 11mph | 13mph | 11mph |
| Dew | 41° | 40° | 40° | 40° | 41° | 39° | 38° |
| RunScore | | | | | | | |
City of Trees Marathon 2022
Oct 15, 2022
Clear conditions throughout the day.
Low: 46°, High: 77°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 47° | 49° | 56° | 63° | 65° | 70° | 73° |
| Feel | 42° | 45° | 56° | 63° | 65° | 70° | 73° |
| Rain | - | - | - | - | - | - | - |
| Wind | 11mph | 10mph | 9mph | 7mph | 6mph | 9mph | 10mph |
| Dew | 23° | 23° | 23° | 25° | 27° | 26° | 27° |
| RunScore | | | | | | | |