STATE FOCUS

    Colorado Boston Qualifying Races

    9 total races
    Top BQ rate: Aspen Valley Marathon (10.4%)

    Part of the West region

    Upcoming races

    Next 6 races with dates still ahead of us

    Aspen Valley Marathon

    Basalt, CO
    Emerging BQ
    July 25, 2026
    Small (<500)
    Warm to hot (65–80°F), humidity varies
    Downhill

    Bound for Boston (Denver) Marathon

    Denver, CO
    Emerging BQ
    August 2, 2026
    Small (<500)
    Warm to hot (65–80°F), humidity varies
    Mostly Flat

    Boulder Rez Marathon

    Boulder, CO
    Emerging BQ
    August 15, 2026
    Small (<500)
    Warm to hot (65–80°F), humidity varies
    Rolling Hills

    Fall Equinox Marathon

    Fort Collins, CO
    Emerging BQ
    September 13, 2026
    Small (<500)
    Cool (40–60°F), ideal racing conditions
    Hilly

    Boulder, CO 09/27/2026

    Boulder, CO 09/27/2026, CO
    Emerging BQ
    September 27, 2026
    Medium (500 - 1,999)
    Cool (40–60°F), ideal racing conditions
    Hilly

    Long View Marathon

    Loveland, CO
    Emerging BQ
    October 10, 2026
    Small (<500)
    Cool (40–60°F), ideal racing conditions
    Rolling Hills

    All Colorado races

    Every Boston qualifier currently hosted in Colorado

    Colorado Marathon

    Fort Collins, CO
    Emerging BQ
    May 3, 2026
    Medium (500 - 1,999)
    Cool to mild (45–65°F), variable conditions
    Downhill

    Colfax Marathon

    Denver, CO
    Emerging BQ
    May 17, 2026
    Large (2,000 - 9,999)
    Cool to mild (45–65°F), variable conditions
    Rolling Hills

    Steamboat Marathon

    Steamboat Springs, CO
    Emerging BQ
    June 7, 2026
    Small (<500)
    Warm to hot (65–80°F), humidity varies
    Downhill

    Fast Course Briefing

    Get the monthly drop on the fastest Boston qualifiers.

    We track which courses are trending, how weather looks, and which registration windows are about to close. Subscribe to get one actionable briefing each month—built for runners and race directors alike.

    • Course intel: weather, elevation, and BQ odds for the next 60 days.
    • Deadlines: registration and deferment reminders before they disappear.
    • Spotlight races: two editor-picked events (one downhill, one flat) every issue.

    One email per month. Unsubscribe anytime.