The One Loudoun Carnival comes to Ashburn twice a year, in June and August. Admission is free. 2027 dates are not out; 2026 ran June 3-21 and Aug. 12-23.
Last checked Oct. 19, 2026. This page is updated each year. Every fact comes from the carnival pages of Downtown One Loudoun, which hosts the carnival.
The One Loudoun Carnival sets up in Ashburn twice every summer, for about three weeks in June and about two weeks in August, and the 2027 dates have not been announced. In 2026 it ran June 3-21 and Aug. 12-23 at One Loudoun Uptown, 44578 Atwater Drive, with rides, carnival food, games and prizes.
Admission is free. You pay for rides, with ride tickets sold on site or in advance online through the “buy wristbands” link on One Loudoun’s event page.
Who to ask
- Dates and hours: Downtown One Loudoun, events page
- Rides and wristbands: the carnival’s own website, marylandcarnivals.com, linked from One Loudoun’s page
- Where: One Loudoun Uptown, 44578 Atwater Drive, Ashburn
Dates
| Year | June run | August run |
|---|---|---|
| 2023 | June 7-25 | Aug. 9-20 |
| 2024 | June 5-23 | Aug. 7-18 |
| 2025 | June 11-29 | Aug. 6-17 |
| 2026 | June 3-21 | Aug. 12-23 |
| 2027 | Not announced | Not announced |
From One Loudoun’s event pages for 2023, 2024, June 2025 and August 2025. The June run has opened on the first or second Wednesday of June every year since 2023, and the August run in the first half of August. One Loudoun posted the 2026 dates on May 5 and the 2025 dates in early May, so watch for 2027 in late April or May. We will add them here when they are out.
Hours
The hours have been the same every year since 2023:
| Day | Hours |
|---|---|
| Monday to Friday | 5 to 11 p.m. |
| Saturday | 1 to 11 p.m. |
| Sunday | 3 to 11 p.m. |
Cost and tickets
- Entry: free.
- Rides: pay as you go with ride tickets, or buy a wristband. Both are sold at the carnival and in advance online through One Loudoun’s “buy wristbands” link, which goes to the carnival’s ticketing site. One Loudoun does not publish ride prices on its page; check the ticket link when the dates are posted.
- Food and games: carnival food, games and prizes are on the midway and are paid separately.
Getting there and parking
The carnival sets up at One Loudoun Uptown, 44578 Atwater Drive. One Loudoun’s page links to directions. Parking and the towing rules for One Loudoun are in our One Loudoun guide; allow time to find a space on summer evenings.
What to know
- Afternoons are only on weekends. On weekdays the gates open at 5 p.m.
- Two chances a year. If June is full of camps and vacations, the August run is a second chance.
- Weather: One Loudoun’s pages give no rain policy, so check its events page and social media on a stormy evening.
- Make an evening of it: the restaurants and the splash pad in downtown One Loudoun are in our One Loudoun guide.
What this means for you
Look for the 2027 dates in May, then pick a weeknight evening for shorter lines. For more summer ideas, see summer camps and pools, kids activities and things to do this month.
Frequently asked questions
When is the One Loudoun Carnival in 2027?
One Loudoun has not announced 2027 dates. In 2026 the carnival ran June 3-21 and Aug. 12-23, and both sets of dates were posted May 5, 2026.
Is the One Loudoun Carnival free?
Admission is free. Rides cost extra: ride tickets and wristbands are sold on site or in advance online, through the link on One Loudoun’s event page.
What are the One Loudoun Carnival hours?
In 2026: 5 to 11 p.m. Monday through Friday, 1 to 11 p.m. Saturday and 3 to 11 p.m. Sunday.
Where is the One Loudoun Carnival?
At One Loudoun Uptown, 44578 Atwater Drive, Ashburn. In 2023 and 2024 One Loudoun gave the address as 20280 Exchange St.
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