Outdoor activities

in Boulder, CO

Discover outdoor activities in Boulder with Meetup. Whatever your interest, Meetup helps you connect with like-minded people.

Hiking

Walker Ranch Loop ~8 mi

Walker Ranch Loop ~8 mi

Sat, May 30 · 08:00 MDT

by Colorado Trailblazers 40+

Boulder Walk 180: Eastern Half of the Slow Marathon

Boulder Walk 180: Eastern Half of the Slow Marathon

Sat, May 30 · 08:30 MDT

by Boulder Ramblers

Boulder Walk 180: Western Half of the Slow Marathon

Boulder Walk 180: Western Half of the Slow Marathon

Sat, June 13 · 07:30 MDT

by Boulder Ramblers

Woodland Lake and Skyscraper Reservoir in Indian Peaks Wilderness Hike!

Woodland Lake and Skyscraper Reservoir in Indian Peaks Wilderness Hike!

Sat, June 20 · 07:45 MDT

by Colorado Big Hikes Group

Walking

Midday Movement @ Lake Waneka

Midday Movement @ Lake Waneka

Tue, May 26 · 12:00 MDT

by Midday Movement @ Lake Waneka

Boulder Reservoir "Beach" Walk Followed by Spitz Mediterranean

Boulder Reservoir "Beach" Walk Followed by Spitz Mediterranean

Sat, June 6 · 09:00 MDT

by Longmont Walks

St. Vrain Greenway
Morning Nature Walk

St. Vrain Greenway Morning Nature Walk

Tue, May 26 · 08:00 MDT

by Longmont Walks

Pella Crossing Noon Hour Nature Walk

Pella Crossing Noon Hour Nature Walk

Fri, May 29 · 12:00 MDT

by Longmont Walks

Running

THURSDAY NIGHT Weekly Social Run at Shoes and Brews!

THURSDAY NIGHT Weekly Social Run at Shoes and Brews!

Thu, May 28 · 18:00 MDT

by Longmont Running

Achilles community run and walk

Achilles community run and walk

Thu, May 28 · 17:30 MDT

by Boulder Achilles running and walking

Saturday Morning Group Run

Saturday Morning Group Run

Sat, May 30 · 08:00 MDT

by Road Runner Sports Run Group

Bolder Boulder 10k

Bolder Boulder 10k

Mon, May 25 · 07:00 MDT

by Boulder Trail Running Breakfast Club

Cycling

Road bike ride to Berthoud

Road bike ride to Berthoud

Tue, June 2 · 09:00 MDT

by St. Vrain Cyclists - (prev. Longmont Easy Riders)

Spin Into the Setting Sun 2026 (A/B1/B2 at 5:30, B3 at 5:00)

Spin Into the Setting Sun 2026 (A/B1/B2 at 5:30, B3 at 5:00)

Tue, May 26 · 17:30 MDT

by St Vrain Chain Gang Bicycling Club (SVCG) - Longmont, CO

RMCC Road Ride: Boulder - Magnolia - Eldora - Brainard Lake Loop

RMCC Road Ride: Boulder - Magnolia - Eldora - Brainard Lake Loop

Sat, June 6 · 08:00 MDT

by Rocky Mountain Cycling Club RMCC

HRCC Masters - Bike MS Colorado 2026

HRCC Masters - Bike MS Colorado 2026

Sat, June 13 · 06:00 MDT

by HRCC Masters

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