By 10 a.m. on Saturday, October 17, families with treat bags will be lining up at the Museum on Main for downtown Pleasanton's first Boo Bash. About nine hours later, a half-mile trail of hand-carved jack-o'-lanterns will light up a mile or so away at the Alameda County Fairgrounds. Between those two moments, the fairgrounds will also host a Diwali festival that runs until 11 p.m. and ends with fireworks.
This year Pleasanton's October falls into two parts. Downtown is free, runs in daylight, and is scaled for kids. The fairgrounds are ticketed, run after dark, and two of the evening events come from outside the city. Most weekends you can treat them as separate outings. On the 17th they all happen on the same day.
Downtown Took the Daylight Hours
The Pleasanton Downtown Association built its Halloween season as one long run-up. The Pumpkins on Main Scavenger Hunt began October 1 and runs through October 17. Kids pick up a map at the Museum on Main or Towne Center Books, find the pumpkins hidden around downtown, and get a stamp or signature at each stop. Counting today, October 12, that leaves six days to finish a map.
The hunt ends with the Boo Bash, which the PDA calls its "first annual" trick-or-treat event. It's free and runs from 10 a.m. to 1 p.m. on October 17, starting at the Museum on Main, 603 Main Street. Kids bring their own bucket or bag. Adults get a list of clues that lead to candy at more than a dozen participating downtown businesses, and parents also get the answers in case a clue stumps a younger trick-or-treater. The morning also includes a costume contest and free children's activities from Five Little Monkeys.
Because of the timing, a full day of Halloween fits on Main Street before lunch. Kids can finish the last scavenger stamps, trick-or-treat their way through the Boo Bash clues, and still be home in time for a nap.
The Fairgrounds Took the Night, With Help From Out of Town
The evening half of the season belongs to a touring production. Pumpkins After Dark is new to the Alameda County Fairgrounds this fall. The fairgrounds' listing describes more than 10,000 hand-carved pumpkins along a walking trail, plus live carving demonstrations, themed photo spots, and roaming performers.
The brand's own locations page shows how unusual the booking is. Pumpkins After Dark runs in Canada, the United States, and Ireland, mostly in Canadian cities such as Calgary, Edmonton, Markham, Milton, Saskatoon, and Winnipeg, plus Dublin and Edinburgh overseas. Only two U.S. sites are operating this season, Des Moines and Pleasanton. San Diego and Nashville are listed as "coming soon." For this October, then, the Alameda County Fairgrounds is the brand's only active site in California.
When Pleasanton Weekly covered the event's arrival, marketing representative Kami Van Halst called the fairgrounds a "fantastic setting." The Independent described the path as a half-mile walk past displays ranging from mythical creatures to pop-culture icons. It also photographed carver James Hall of Lake Elsinore working on a Facehugger from the "Alien" films during a demonstration on October 1.
The trail runs Thursday through Sunday, and entry starts a little earlier each week as the evenings get darker. Here are the remaining nights as of October 12:
| Remaining dates | Hours |
|---|---|
| October 15 to 18 | 6:45 p.m. to 10 p.m. |
| October 22 to 25 | 6:30 p.m. to 10 p.m. |
| October 29 to 31 | 6:30 p.m. to 10 p.m. |
The fairgrounds lists admission at $28.80 for ages 18 and up, $22.80 for ages 4 to 17, and free for kids 3 and under. Parking is $15, paid by card or tap-to-pay only. The Independent reported a different range, $19 to $34, so the price you pay likely depends on the night and the time slot. Entry is time-slotted, so the Pumpkins After Dark Pleasanton page is the place to check current pricing before choosing a night.
Three Ticketed Events Share One Valley Avenue Entrance
Pumpkins After Dark isn't the only thing happening at the fairgrounds at night. Pirates of Emerson, a walk-through haunted attraction marking 36 years, runs October 2 through November 1. It includes four haunted houses, a virtual reality ride, games, and bands. The fairgrounds listing says plainly that it "is not geared for children." General admission to all four houses is $48, and a two-house ticket is $38. Gates open at 7:05 p.m., and closing is 10 p.m., or 11 p.m. on select nights.
The detail that matters most for planning is how you get in. Both Pumpkins After Dark and Pirates of Emerson use Gate 8 off Valley Avenue at 2005 Valley Avenue. Neither promoter set up an entrance at the Pleasanton Avenue gate, and the fairgrounds states that guests "will not be able to access the event from Pleasanton Avenue." If you're used to walking in from the downtown side during the summer fair, plan on driving and parking around to Valley Avenue instead. Each event charges its own $15 parking fee.
October 17 Is When the Two Halves Meet
On Saturday, October 17, the Association of Indo Americans holds its Diwali Festival of Lights & Fireworks at the fairgrounds from noon to 11 p.m., using Gate 8 or Gate 12. The program includes a 40-foot Ravan effigy, Rath Yatra, a RamLeela dance drama, Disco Dandiya, Bollywood performances, carnival rides, a kids zone, and more than 150 food and shopping vendors. According to the organizer, general admission is $12 online, Dandiya is $15 online, children 5 and under get in free, and parking is $15. The effigy burning and fireworks happen after sunset. AIA hasn't published an exact time and describes its stage schedule as approximate.
The City of Pleasanton is holding its own free Diwali Celebration the same afternoon at the Pleasanton Senior Center, 1 to 3 p.m., with music, dance, and cultural activities, according to the city's October 2026 update.
Put together, the published schedules for that Saturday look like this:
- 10 a.m. to 1 p.m. Boo Bash downtown, starting at the Museum on Main. The scavenger hunt also ends that day.
- Noon The AIA Diwali festival opens at the fairgrounds.
- 1 to 3 p.m. The city's free Diwali Celebration at the Pleasanton Senior Center.
- 6:45 p.m. Pumpkins After Dark opens its trail.
- 7:05 p.m. Pirates of Emerson opens.
- After sunset Diwali effigy burning and fireworks, with no set time.
- 11 p.m. The Diwali festival closes.
By early evening, three separately ticketed events will be running at the fairgrounds, and all three list Gate 8 as an entrance. If you want the pumpkin trail without the crowds, Thursday, October 15 and Friday, October 16 offer the same 6:45 p.m. start and the same displays, and the following Thursday and Friday open even earlier, at 6:30 p.m. If you're planning the whole day around the 17th, downtown in the morning, the Senior Center in the afternoon, and the fairgrounds after dark follow the published schedules in order.
After the 17th, the Evenings Shift Toward Adults
Once the Boo Bash is over, downtown's next Halloween event is for adults. The PDA's Halloween Zom-Brew Crawl is Saturday, October 24, from 5 to 8 p.m., with check-in at the Museum on Main. It's limited to ages 21 and up. Tickets include beer tastings, a commemorative glass, a wristband, and a map, plus food bites at select stops. Tickets on Eventbrite are listed from $44.52.
At the fairgrounds, Pumpkins After Dark has two more weekends after the 17th, with its last night on Halloween itself, from 6:30 to 10 p.m. Pirates of Emerson stays open one night longer, through November 1. The published calendars we reviewed didn't include a downtown trick-or-treat on October 31.
Both fairgrounds listings say details can change, and some vendors are card-only. Check each event's own page the week you go, especially for Pumpkins After Dark time slots and Diwali's evening program.
At April Duarte, we love seeing downtown's first Boo Bash and a carved-pumpkin trail with an international lineup land in Pleasanton in the same month. If you've got a question about Pleasanton this fall, whether it's which night to visit the pumpkins or what your own home is worth this season, reach out to our team. We're always glad to talk about the town we call home.
