Date
August 15, 2026
Field Size
Small (<500)
BQ Rate
1.1%
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Course features rolling hills that require sustained effort throughout, testing both strength and endurance.
Only 1.1% of finishers qualified for Boston, indicating the demanding nature of the race relative to BQ times.
A small field size of 94 allows for a personal atmosphere, with less congestion on the roads compared to larger marathons.
Located in Boulder, CO, the race offers stunning views of the Flatirons and the opportunity to experience the region's high-altitude conditions.
With only 94 finishers in 2026, this race can feel intimate, providing a unique chance to connect with fellow runners amidst the stunning Colorado backdrop. The rolling hills challenge you relentlessly, making it essential to account for elevation changes in your training. Don’t underestimate the potential for fatigue as you navigate this varied terrain, especially in the summer heat.
Boulder Rez Marathon is an Emerging BQ venue — a legitimate qualifier for committed runners, though BQ rates are still building as the race grows. Historically, around 1.1% of finishers have posted Boston-qualifying times here. The course profile rewards runners who execute a well-paced effort from the start.
Focus on maintaining an even effort on hills to avoid burnout; practice hill repeats during training. Hydration will be key in the summer heat, so plan your water stations accordingly to ensure you stay fueled throughout the race.
Detailed elevation profile data is being prepared for this race. Check back soon for interactive course analysis.
Typical conditions: Warm to hot (65–80°F), humidity varies. Summer racing demands careful heat management and aggressive early hydration; build a conservative first-half plan and let your fitness carry you home.
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