Mainly Marathons Northwest Series
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2026 Northwest Series - Day 5 (ID)
Mainly Marathons presents Day 5 of the Northwest Series on September 23, 2026, at Hell's Gate State Park in Lewiston, Idaho. The event takes place at 5501 Hell's Gate Road, Lewiston, ID 83501, and is listed as part of the Northwest Series of races organized by Mainly Marathons.
The event offers multiple distance options with individual age group/open categories:
- Marathon (individual age group/open)
- Half Marathon (individual age group/open)
- 50K (individual age group/open)
- 10K (individual age group/open)
- 5K (individual age group/open)
Registration fees shown for the listed categories range from $55 to $155 USD. The published fees include $55 for the 5K, $65 for the 10K, $125 for the half marathon, $145 for the marathon, and $155 for the 50K.
The organizer notes there are no time limits for the event. Merchandise from Mainly Marathons is available through the Mainly Merch store and some items will be offered in person at the races. The event is part of a series of races under the Northwest Series banner. Visit the organization's website for the most recent information.
