Boulder Stroke and Stride Series

Embark on a vibrant summer evening run at the Boulder Stroke and Stride Series 5K on August 6, 2026, held at the scenic Boulder Reservoir in Boulder, CO. This popular event, celebrating its 25th season, invites runners to tackle a fast 5K course entirely on the Boulder Reservoir dam, offering stunning views of the water and surrounding natural beauty. As part of a beloved weekly series, this race provides a fantastic opportunity to enjoy a midweek challenge in a supportive and fun atmosphere.

The Boulder Stroke and Stride Series is renowned for its welcoming environment, attracting 250-400 participants each week, from those seeking a personal best to new runners enjoying their first timed event. With live timing capturing every stride, you can focus on the straightforward, flat terrain of the dam, designed for an enjoyable and potentially speedy effort. Typical race day conditions in early August feature comfortable evening temperatures, with highs usually around 88F and lows around 57F, and a minimal 4% chance of precipitation, creating ideal running weather as the sun begins to set.

Beyond the run, participants can look forward to great post-race food, adding to the festive community feel. The 5K run-only event kicks off at 6:05 PM, with entry to Boulder Reservoir opening at 4:50 PM; simply inform the gate attendant you're there for the Stroke and Stride Race. This long-standing series offers not just a race, but a consistent tradition for Boulder's running community, promising an engaging and rewarding experience for all.