Events Calendar

August 2025

Sat 16

Longmont Kids Only Triathlon

Saturday, Aug. 16, 2025 · 7 am - 2 pm

Recreation Center 310 Quail Rd., Longmont, CO, United States

Sat 16

Adult Try-a-Tri Triathlon

Saturday, Aug. 16, 2025 · 7 am - 2 pm

Recreation Center 310 Quail Rd., Longmont, CO, United States

Sat 16

Free Fitness in the Park (8/16/2025)

Saturday, Aug. 16, 2025 · 9 am - 10 am

Lanyon Park 1900 Collyer Street, Longmont, Colorado, United States

Fri 22

Five Seasons Quintet Concert

Friday, Aug. 22, 2025 · 5:30 pm - 7:30 pm

Sandstone Ranch Visitors Center 3001 Sandstone Dr., Longmont, CO, United States

Sat 23

Open House at Sandstone Ranch (8/23/2025)

Saturday, Aug. 23, 2025 · 10 am - 2 pm Open House at Sandstone Ranch Series

Sandstone Ranch Visitors Center 3001 Sandstone Dr., Longmont, CO, United States

Tue 26

Free Fitness in the Parks

Tuesday, Aug. 26, 2025 · 6:30 pm - 7:30 pm

Lanyon Park 1900 Collyer Street, Longmont, Colorado, United States

September 2025

Sat 6

Free Fitness in the Park (9/6/2025)

Saturday, Sep. 6, 2025 · 12 pm - 1 pm

Lanyon Park 1900 Collyer Street, Longmont, Colorado, United States

Sat 6

Rhythm at Roosevelt

Saturday, Sep. 6, 2025 · 2 pm - 10 pm

Roosevelt Park 700 Longs Peak Ave., Longmont, CO, United States

Fri 12

Itty Bitty City Preschool Playtime (9/12/2025)

Friday, Sep. 12, 2025 · 9 am - 11 am Itty Bitty City Preschool Playtime Series

Memorial Building 700 Longs Peak Ave., Longmont, CO, United States

Sat 13

Open House at Sandstone Ranch (9/13/2025)

Saturday, Sep. 13, 2025 · 10 am - 2 pm Open House at Sandstone Ranch Series

Sandstone Ranch Visitors Center 3001 Sandstone Dr., Longmont, CO, United States

Sat 13

History Tour at Sandstone Ranch (10:30 am–12:00 pm)

Saturday, Sep. 13, 2025 · 10:30 am - 12 pm History Tour at Sandstone Ranch Series

Sandstone Ranch Visitors Center 3001 Sandstone Dr., Longmont, CO, United States

Sat 13

History Tour at Sandstone Ranch (12:30 pm–2:00 pm)

Saturday, Sep. 13, 2025 · 12:30 pm - 2 pm History Tour at Sandstone Ranch Series

Sandstone Ranch Visitors Center 3001 Sandstone Dr., Longmont, CO, United States

Tue 16

Bird Walk at Sandstone Ranch (9/16/2025)

Tuesday, Sep. 16, 2025 · 7:30 am - 10 am Bird Walk at Sandstone Ranch Series

Sandstone Ranch Visitors Center 3001 Sandstone Dr., Longmont, CO, United States

Fri 19

Itty Bitty City Preschool Playtime (9/19/2025)

Friday, Sep. 19, 2025 · 9 am - 11 am Itty Bitty City Preschool Playtime Series

Memorial Building 700 Longs Peak Ave., Longmont, CO, United States

Sat 20

Free Fitness in the Park (9/20/2025)

Saturday, Sep. 20, 2025 · 12 pm - 1 pm

Lanyon Park 1900 Collyer Street, Longmont, Colorado, United States

Fri 26

Itty Bitty City Preschool Playtime (9/26/2025)

Friday, Sep. 26, 2025 · 9 am - 11 am Itty Bitty City Preschool Playtime Series

Memorial Building 700 Longs Peak Ave., Longmont, CO, United States

Sat 27

Open House at Sandstone Ranch (9/27/2025)

Saturday, Sep. 27, 2025 · 10 am - 2 pm Open House at Sandstone Ranch Series

Sandstone Ranch Visitors Center 3001 Sandstone Dr., Longmont, CO, United States

Tue 30

Bird Walk at Sandstone Ranch (9/30/2025)

Tuesday, Sep. 30, 2025 · 7:30 am - 10 am Bird Walk at Sandstone Ranch Series

Sandstone Ranch Visitors Center 3001 Sandstone Dr., Longmont, CO, United States

October 2025

Fri 3

Itty Bitty City Preschool Playtime (10/3/2025)

Friday, Oct. 3, 2025 · 9 am - 11 am Itty Bitty City Preschool Playtime Series

Memorial Building 700 Longs Peak Ave., Longmont, CO, United States

Sat 4

Longmont Swim Instructor Class (LSI)

Saturday, Oct. 4, 2025 · 9 am - 3 pm Longmont Swim Instructor Class (LSI) Series

Centennial Pool 1201 Alpine St, Longmont, Colorado, United States