Operation Haystack

JUN

27

2026

Experience a half marathon in the mountains of Nederland Colorado. This event features a significant elevation gain of 4226 feet with the summit always in view.

Sat 27 Jun 2026

Nederland, Colorado

Registration

Half Marathon

Always double-check with the organizer's website! This page may contain affiliate links.

Operation HAYSTACK

Operation HAYSTACK is a mountain running event held in Nederland, Colorado. The course covers a total distance of 13.1 miles, designated as a half marathon. Participants navigate a route that includes a total elevation gain of 4,226 ft. The summit remains a central feature of the landscape throughout the event.

The event takes place on June 27, 2026. The location is situated at County Road 16 in Nederland. The activity is organized as an offline event where participants focus on reaching the summit while maintaining visual contact with the peak during the journey. Visit the organization's website for the most recent information.