Halloween 2026 in Manassas: Fall-O-Ween on the museum lawn 10 a.m. to 3 p.m. Saturday, Oct. 31, with kids' and pet costume parades. No set trick-or-treat hours.
Last checked Oct. 31, 2026. This page is updated each year at the same address. Dates come from the organizers: Historic Manassas Inc., the City of Manassas October 2026 City Connection, the Manassas Museum programs page the Prince William County events calendar and the Visit Manassas listing for Fall-O-Ween.
Halloween falls on Saturday, Oct. 31, 2026, and the day’s big event is Old Town Manassas Fall-O-Ween, 10 a.m. to 3 p.m. on the Manassas Museum lawn, with a kids’ costume parade at 1 p.m. and a pet costume parade at 2:30 p.m. The week’s other events, the ARTfactory’s haunted house, Haunted Happenings downtown and the Manassas Mall trunk-or-treat, have been held.
Updated Oct. 31: events through Oct. 30 marked as held; Fall-O-Ween times and parades confirmed; Día de Muertos removed because the museum’s events page no longer lists it.
The city sets no official trick-or-treat hours. That, and the safety contacts for Halloween night, are on our separate trick-or-treat hours page.
What this means for you
- Little kids: Fall-O-Ween (Oct. 31, 10 a.m. to 3 p.m.) is daytime, with crafts, games and treats.
- Next year: Haunted Happenings is the Saturday before Halloween and Factory of Fear runs the week before; this page keeps this year’s details as a guide.
- Drivers: the vice mayor asked drivers in the October City Connection to slow down and watch for children on Halloween.
Halloween week at a glance
All but the last row have been held.
| Date | Event | Where | Cost |
|---|---|---|---|
| Thu. Oct. 22 to Sat. Oct. 24, from 7 p.m. | Factory of Fear: Outbreak | ARTfactory, 9419 Battle St. | $25 |
| Fri. Oct. 23, 6:30 and 7:30 p.m. | City Cemetery tours | City Cemetery | $10 |
| Sat. Oct. 24, 10 a.m. to 2 p.m. | Haunted Happenings | Historic Downtown | Free |
| Sat. Oct. 24, 6 p.m. | Book talk: Haunted Fauquier County | Manassas Museum | Register |
| Wed. Oct. 28, 5:30 to 8 p.m. | Police Trunk or Treat | Manassas Mall, 8300 Sudley Road | Free |
| Fri. Oct. 30, 5:30 to 8 p.m. | Fright Night Movie Night | Community Center, 8750 Sudley Road | Free |
| Fri. Oct. 30, 7 p.m. | City Cemetery tour | City Cemetery | $10 |
| Sat. Oct. 31, 10 a.m. to 3 p.m. | Old Town Manassas Fall-O-Ween | Manassas Museum lawn | Not listed |
Haunted house: Factory of Fear
Factory of Fear: Outbreak is the ARTfactory’s yearly haunted house, and this year’s story turns all four floors of the arts center at 9419 Battle St. into a building overrun by a spreading infection. Its final nights were Oct. 22-24, with $25 tickets. It is a scare attraction, not a children’s event.
Downtown trick-or-treating: Haunted Happenings
Historic Manassas Inc. runs Haunted Happenings from 10 a.m. to 2 p.m. Saturday, Oct. 24 this year. Children in costume walked downtown collecting treats from participating shops and restaurants, with a costume contest. It is free.
Trunk-or-treat at Manassas Mall
The Prince William County Police Department’s Trunk or Treat was held 5:30 to 8 p.m. Wednesday, Oct. 28, in the Manassas Mall parking lot, 8300 Sudley Road. The mall sits just outside the city line in Prince William County; the event is open to everyone.
City and museum events
These were held in October.
- Fright Night Movie Night, Friday, Oct. 30, from 5:30 p.m. at the City of Manassas Community Center, 8750 Sudley Road. The film is Monster House; the city says to bring candy and snacks. Details on RecDesk.
- City Cemetery tours with the Manassas Museum, Friday, Oct. 23, at 6:30 and 7:30 p.m. and Friday, Oct. 30, at 7 p.m. Tickets are $10. Register on RecDesk.
- Book talk: Haunted Fauquier County, Saturday, Oct. 24, at 6 p.m. at the museum, with local historian Meaghan Reddick. Free; register here.
Fall-O-Ween, Saturday, Oct. 31
Old Town Manassas Fall-O-Ween runs 10 a.m. to 3 p.m. Saturday, Oct. 31, on the Manassas Museum lawn, 9101 Prince William St. The organizer, Chic Events DC, lists:
- arts and crafts, kids’ games and fall activities
- Halloween treats and family entertainment
- a kids’ costume parade at 1 p.m. and a pet costume parade at 2:30 p.m., with prizes
A note on downtown evenings
The City of Manassas and Historic Manassas Inc. paused the October Second Friday event after a 16-year-old was killed during the Sept. 4 First Friday, according to the October City Connection. The city said any future evening events are under review. None of the Halloween events on this page were listed as canceled when we checked.
Pumpkins and fall festivals
Yankey Farms’ pick-your-own patch in Bristow closes for the season after Oct. 31. See our fall festivals and pumpkin patches guide. For Thanksgiving plans, see our Thanksgiving in Manassas page.
Related: things to do this month and our parks and trails guide.
Frequently asked questions
What Halloween events are in Manassas, Virginia, in 2026?
On Halloween itself, Saturday, Oct. 31, Old Town Manassas Fall-O-Ween runs 10 a.m. to 3 p.m. on the Manassas Museum lawn. Earlier events, including Haunted Happenings on Oct. 24, Factory of Fear Oct. 22-24 and the Manassas Mall trunk-or-treat on Oct. 28, have been held.
Is there a haunted house in Manassas?
The ARTfactory’s Factory of Fear: Outbreak, at 9419 Battle St., ran its last nights Oct. 22-24, 2026. It is a yearly haunted house; watch this page for next year’s dates.
What time is Fall-O-Ween in Manassas?
10 a.m. to 3 p.m. Saturday, Oct. 31, 2026, on the Manassas Museum lawn, 9101 Prince William St. The kids’ costume parade is at 1 p.m. and the pet costume parade at 2:30 p.m.
What are the trick-or-treat hours in Manassas?
The city set no official hours for Halloween night, Saturday, Oct. 31. Our trick-or-treat hours page has the details and safety contacts.
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