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City of Trees Marathon

Name: City of Trees Marathon
Start: 2026-10-10
End: 2026-10-10
Location: Boise, Idaho

location_on

Boise, Idaho, United States

calendar_today 10 Oct, 2026

directions_run Running

language Official Website

sell $35.00 – $65.00

About the Event

Saturday, October 10, 2026
Course Maps will be updated once details have been finalized.

GREAT SWAG and T-SHIRT DEADLINE
Comfiest long sleeve t-shirt, swag thanks to our amazing sponsors, and finisher food/drink, all COT runners get a finisher's award. Please note that registrants registering after October 1, 2026 are not guaranteed a shirt.

Please note courses utilize the Boise Greenbelt system. Should we run the Greenbelt, the river can be unpredictable. Systems and entities that govern the local Greenbelt are constantly dealing with these challenges. Typical issues are created due to sidewalk construction, sinkholes, flooding, etc. During the run, you may encounter wildlife that may cause a delay in your progress and/or change in your planned route. Or you may cause your own delay to stop and listen to the amazing sounds this course creates.

Races Offered

Marathon

Oct 10, 2026

straighten

Distance — 26.2 Miles

terrain

Type — Running

timer

08:00

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$65.00

Half Marathon

Oct 10, 2026

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Distance — 13.1 Miles

terrain

Type — Running

timer

08:30

sell

$55.00

10k

Oct 10, 2026

straighten

Distance — 6.2 Miles

terrain

Type — Running

timer

09:00

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$45.00

5k

Oct 10, 2026

straighten

Distance — 3.1 Miles

terrain

Type — Running

timer

09:00

sell

$35.00

Weather Overview

These values represent the 3-year monthly averages for October in Boise.

Temp (°C)

Feels Like (°C)

thermostat 6.5° / 19.0°

wb_sunny 3.2° / 15.4°

Wind (km/h)

Humidity (%)

air 9.6 /

water_drop 55.9%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat 6.5° / 19.0°

wb_sunny 3.2° / 15.4°

air 9.6 km/h

water_drop 55.9%

About Boise

Boise is the capital and largest city of Idaho. Boise offers numerous recreational opportunities, including extensive hiking and biking in the foothills to the immediate north of downtown. Boise is a regional hub for jazz, theater, and indie music, and is home to several museums.