Ready for Halloween? Whether you're into haunted houses, creative costumes, festive activities or just hanging out with friends, there's something for everyone. Check out these Halloween events happening on campus and around Boulder. 

Ghosts of Boulder Bike Tour 

  Oct. 21 |   5-7 p.m. |   Macky Auditorium West Entrance 

Explore Boulder's legends and local lore on a guided bike tour of mysterious locations. Bring your bike, dress warmly and enjoy the ride. Bike lights will be provided. Open to students and community members. 

Thrifty Thursdays 

  Oct. 22 |   10 a.m. to 4 p.m. |   UMC Arcade and Fountain Area 

Looking for unique finds or inspiration for a last-minute Halloween costume? Shop local thrift vendors from Boulder and the Denver metro area while supporting small businesses and sustainable fashion. 

Pumpkin Palooza 

  Oct. 27 |   6-9 p.m. |   Norlin Quad 

Celebrate Halloween with pumpkin painting, a costume photo booth, yard games, pizza and fall treats. Bring your friends and dress up for this annual event! 

How You Use: Continuum of Use 

  Oct. 28 |   12-2 p.m. |   UMC Fountain Area 

Explore how alcohol and other drugs impact your life in a judgment-free space and learn about campus resources that support your well-being. 

It Came from the Closet: Queer Costume Party 

  Oct. 29 |   5-7 p.m. |   C4C Abrams Lounge 

Celebrate Halloween with a costume contest, Halloween-themed LEGO building competition, board games, candy and more. Enter a competition for a chance to win prizes. Costumes are encouraged but not required. All students are welcome. 

Club 156 x The Connection: Boogie Bowling Bash 

  Oct. 29 |   8-10 p.m. |   UMC, The Connection and Club 156 

Grab your friends for free bowling, billiards, ping pong and pizza at The Connection. Then head to Club 156 for live music presented by CU Boulder Program Council. 

Queer Cheer: Halloween 

  Oct. 30 |   1:30-3:30 p.m. |   C4C N320 

Drop in for Halloween crafts celebrating queer culture, meet new friends and connect with the Pride team. All students are welcome. 

A Safer Night Out 

  Oct. 30 |   2-5 p.m. |   UMC South Terrace 

Get ready for Halloween weekend with free food, wellness resources and harm-reduction supplies. Stop by to connect with fellow Buffs and pick up resources for a safer night out. 

“Hill”oween 

  Oct. 30 |   4-7 p.m. |   Beach Park 

Celebrate Halloween with trick-or-treating, pumpkin carving and free food! 

Free Friday Power Hour: Halloween Zumba 

  Oct. 30 |   5-6 p.m. |   Rec Center Studio 2 

Celebrate Filipino American History Month with Halloween-themed Zumba, festive music and a costume-friendly workout. No experience needed! Free with your Buff OneCard. The first 50 students receive a sports towel, and all attendees can enter a prize raffle. 

Ice Rink Theme Night: Halloween Costume Skate 

  Oct. 30 |   7-8 p.m. |   Rec Center Ice Rink 

Lace up your skates and show off your Halloween costume on the ice! Prizes will be awarded for the best and most creative costumes. 

Murder Mystery Night at the Climbing Gym 

  Oct. 30 |   7-9 p.m. |   Rec Center Climbing Gym 

Put your climbing and detective skills to the test! Complete climbs, collect clues and solve the mystery. Free for climbing gym members and day pass holders. 

Haunted Halls: The Nightmare before the 150th 

  Oct. 30 |   7-11:30 p.m. |   Stearns East 

Explore a haunted house inspired by The Nightmare Before Christmas in the basement of Stearns Hall. Afterward, head to the Stearns Central lobby for a Halloween carnival featuring games and activities.

Buffs After Dark: Buff Pool Halloween Film Screening 

  Oct. 30 |   8-10 p.m. |   Rec Center Buff Pool 

Float in the Buff Pool while watching Hocus Pocus on the big screen! Enjoy Halloween decorations and a fun movie night with friends, right here on campus. 

Humans vs Zombies 

  Oct. 30 |   8 p.m. to 2 a.m. |   Engineering Center 

Grab your Nerf blaster and join a Halloween-themed Humans vs. Zombies battle. A signed waiver is required, and blasters must meet event restrictions. A limited number of blasters will be available to borrow.

Student Game Day Huddle 

  Oct. 31 |   Time TBD |   Farrand Field 

Get ready to cheer on the Buffs at the Halloween home football game! Stop by the student tailgate for free food, games and music, plus a chance to be selected as the Student Fan of the Game and walk onto Folsom Field.