Outdoor activities

in Diamond Bar, CA

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

Hiking

East Fence Line Trail Hike - Chino Hills State Park

East Fence Line Trail Hike - Chino Hills State Park

Sat, Oct 24 · 9:00 AM PDT

by Puente/Chino Hills Hikes (Sierra Club)

Fullerton Loop Hike w/ Brick & Barbell

Fullerton Loop Hike w/ Brick & Barbell

Sun, Oct 18 · 10:00 AM PDT

by Fullerton Hiking Club

Chapman Trail Maintenance

Chapman Trail Maintenance

Sat, Oct 17 · 7:30 AM PDT

by Los Angeles Hiking Group

Halloween 2026 Night Hike #2 (Oct/17)

Halloween 2026 Night Hike #2 (Oct/17)

Sat, Oct 17 · 5:00 PM PDT

by SoCal Science Hikes

Walking

BarkClub Spooky Social — Walk, Costumes + Photos

BarkClub Spooky Social — Walk, Costumes + Photos

Sun, Oct 25 · 4:30 PM PDT

by BarkClub Social Club — Rancho Cucamonga

Moderate Level Hiking in POWDER CANYON! Date changed

Moderate Level Hiking in POWDER CANYON! Date changed

Sun, Oct 18 · 8:00 AM PDT

by Hike & Walk for Friendship, Fun, and Health

10,000 Steps Hikes

10,000 Steps Hikes

Thu, Oct 22 · 4:00 PM PDT

by Puente Hills Preserve Hikers

Evening Walk at Bonominio Park (south of Mt Rubidoux)

Evening Walk at Bonominio Park (south of Mt Rubidoux)

Wed, Oct 14 · 5:30 PM PDT

by Riverside Walking Group

Running

Cypress Park to the LA River 5K + Coffee

Cypress Park to the LA River 5K + Coffee

Sun, Oct 18 · 7:00 AM PDT

by Cypress Park / Mt. Washington Run Club

ASP X Altra Demo Social Run & Monthly Potluck

ASP X Altra Demo Social Run & Monthly Potluck

Tue, Oct 13 · 6:00 PM PDT

by A Snail's Pace Running Shop Weekly Runs

ASP x Altra Demo & Social Run & Monthly Potluck

ASP x Altra Demo & Social Run & Monthly Potluck

Mon, Oct 12 · 6:00 PM PDT

by A Snail's Pace Running Shop Weekly Runs

ASP x Puma Demo & Social Run

ASP x Puma Demo & Social Run

Mon, Oct 26 · 6:00 PM PDT

by A Snail's Pace Running Shop Weekly Runs

Cycling

NOTE: 7:30AM ROLLOUT Lvl 3: EZ Thursday Ride (23.8 mi)

NOTE: 7:30AM ROLLOUT Lvl 3: EZ Thursday Ride (23.8 mi)

Thu, Oct 15 · 7:15 AM PDT

by BOBie Cycling Club

7:30AM ROLLOUT Lvl 3: NEW ROUTE TUES A.M. RIDE

7:30AM ROLLOUT Lvl 3: NEW ROUTE TUES A.M. RIDE

Tue, Oct 13 · 7:15 AM PDT

by BOBie Cycling Club

Fullerton - ARTIC, San Clemente, Oceanside

Fullerton - ARTIC, San Clemente, Oceanside

Sat, Oct 17 · 6:15 AM PDT

by BOBie Cycling Club

Bonelli Loops

Bonelli Loops

Wed, Oct 14 · 6:00 PM PDT

by Cycling Connection Rancho Cucamonga

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