Events Calendar

October 2026

Sat 17

Murder Mystery Dinner at Callahan House

Featured Saturday, Oct. 17 · 6:30 pm - 10 pm

Callahan House 312 Terry St, Longmont, CO, United States

Fri 23

Itty Bitty City Preschool Playtime (10/23/2026)

Friday, Oct. 23 · 9 am - 11 am Itty Bitty City Preschool Playtime Series

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

Sat 24

Day of the Dead Family Celebration

Featured Saturday, Oct. 24 · 11 am - 3 pm

Longmont Museum 400 Quail Rd., Longmont, CO, United States

Celebrate the 26th anniversary of the longest-running public Day of the Dead celebration in Colorado!

Fri 30

Itty Bitty City Preschool Playtime (10/30/2026)

Friday, Oct. 30 · 9 am - 11 am Itty Bitty City Preschool Playtime Series

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

Sat 31

Halloween Costume Parade

Saturday, Oct. 31 · 9:30 am - 11:30 am

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

November 2026

Fri 6

Itty Bitty City Preschool Playtime (11/6/2026)

Friday, Nov. 6 · 9 am - 11 am Itty Bitty City Preschool Playtime Series

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

Sat 7

Free Saturday Fitness at Lanyon Park (11/7/2026)

Saturday, Nov. 7 · noon - 1 pm Free Saturday Fitness at Lanyon Park Series

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

Wed 11

Holiday

Veterans Day is an observed city holiday on Nov. 11.

Services and facility hours may be impacted.

Fri 13

Itty Bitty City Preschool Playtime

Friday, Nov. 13 · 9 am - 11 am Itty Bitty City Preschool Playtime Series

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

Sat 14

Longmont Turkey Trot

Saturday, Nov. 14 · 9 am - noon

Altona Middle School 4600 Clover Basin Drive, Longmont, Colorado

Fri 20

Itty Bitty City Preschool Playtime (11/20/2026)

Friday, Nov. 20 · 9 am - 11 am Itty Bitty City Preschool Playtime Series

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

Fri 20

Longmont Ice Pavilion Opens

Friday, Nov. 20 · 1 pm - 6 pm

Longmont Ice Pavilion 725 8th Ave., Longmont, CO

Sat 21

Free Saturday Fitness at Lanyon Park (11/21/2026)

Saturday, Nov. 21 · noon - 1 pm Free Saturday Fitness at Lanyon Park Series

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

December 2026

Thu 3

Holiday Open House at Callahan House

Featured Thursday, Dec. 3 · 4:30 pm - 7:30 pm

Callahan House 312 Terry St, Longmont, CO, United States

Thu 10

Santa Visit at Callahan House

Featured Thursday, Dec. 10 · 3:30 pm - 7:30 pm

Callahan House 312 Terry St, Longmont, CO, United States

Sat 12

Longmont Lights Holiday Parade

Saturday, Dec. 12 · 5 pm - 7 pm

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