Wyo Parks 2026 Reservation Information

Reservation Season: May 1 – September 30

Until May 1, all campsites are available on a first-come, first-served basis. Simply choose an empty campsite and enjoy!

Book Your 2026 Adventures Starting January 1!

• Online 24/7: RESERVE.WYOMING.GOV

• By Phone: 877-WYO-PARK (877-996-7275)

• Call Center Hours: 7 a.m. – 7 p.m. daily

NEW FOR 2026: Improving Access for Everyone

At Wyo Parks, we hear your feedback: getting a reservation for popular sites or holiday weekends can be difficult.  For 2026, we are introducing THREE important changes:

#1 - All inventory now releases at 8:00 a.m. (instead of 1:00 a.m.

#2 - No more 'Cancel & Grab'

We’ve been hard at work investigating how to bring more fairness to site availability, and we’ve identified a trend where some users coordinate to "hand off" prime dates to one another. By cancelling a reservation late at night and having a partner "grab" it immediately, a few individuals have been able to monopolize sites unfairly.

To help every camper have a fair shot, we are introducing a 'Release Delay':

• The Problem: Previously, when someone cancelled a site, it became available instantly. This allowed coordinated groups to 'cancel and grab' sites at odd hours before anyone else knew they were available.

• The Solution: Starting this season, any time a reservation is cancelled or shortened, that inventory will not return to the system immediately.

• The New Rule: All freed-up campsites will be held by the system and released to the public all at once at 8:00 AM the following day.

#3 - Updated Cancellation & Refund Policy

To help ensure that unused campsites are available for other families to enjoy, we have updated our refund deadline.

• For a Refund: Cancellations must be completed at least two days prior to your arrival date (by midnight).  For example, if you are supposed to check in on June 7th, you have until midnight on June 5th to cancel for a refund.

• Late Cancellations: Cancellations made on the day before or the day of arrival are non-refundable.

• Note: Reservation, change, and transaction fees remain non-refundable. No refunds are issued for early departures.

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Booking Windows & Dates

New inventory becomes available daily at 8:00 a.m. MT.

• Wyoming Residents: Book up to 120 days prior to arrival.

• Non-Residents: Book up to 113 days prior to arrival.

• Download this booking calendar for quick reference!

Reservation Season Dates:
Outside of reservation season, all sites remain open and are first-come, first-served. 
Just pick an empty spot and enjoy!

• Boysen State Park:  May 15 - September 15
• Buffalo Bill State Park:  May 1 - September 30
• Curt Gowdy State Park:   May 15 - September 30
• Glendo State Park:  May 15 - September 15 (Elkhorn Campground is May 15 - July 15)
• Guernsey State Park: May 15 - September 15
• Keyhole State Park:  May 15 - September 15
• Medicine Lodge State Archaeological Site:   May 1 - September 30
• Seminoe State Park: May 15 - September 15
• Sinks Canyon State Park:  May 1 - September 30

Fees & Policies

• Reservation Fees: Residents $4 | Non-Residents $8 (Non-refundable).

• Vehicle Fees: Fees are charged per vehicle. A reservation covers one vehicle; additional vehicles must pay upon arrival.

• NEW! Refunds:  To help deter 'no-shows' and free up inventory, we have changed the cancellation policy.  In order to receive a refund*, cancellations must be made two days before arrival (by midnight).  Cancellations made after that deadline are not refunded.  Refunds are not given for reservation fees, change fees, or transaction fees. No refunds for early departures.

• 18-Day Hold: To prevent "sliding" reservations forward, any booking made at the maximum window (120/113 days) cannot be modified for 18 days.

No-Show & Occupancy Rules

Please cancel if you can't make it! Staff must physically verify empty sites before they can be re-listed, which delays access for other families.

• Check-In: Required after 3:00 p.m. Check-out is before 11:00 a.m.

• No-Show Penalty: If you haven't arrived by 11:00 a.m. the day after your scheduled arrival, you are a "no-show."

  • 1st & 2nd Offense: Reservation cancelled (no refunds).

  • 3rd Offense: All reservations for the year cancelled (no refunds).

  • 4th+ Offense: Suspension of reservation privileges.

General Rules

• 14-Day Limit: You may camp for a maximum of 14 days in any 30-day "rolling" period at a single park.

• Occupancy: Sites must be occupied nightly by the individual named on the account.

• Pets: Dogs must be on leashes at all times.

Your Fees at Work: 100% of revenue collected from visitor fees goes directly back into Wyoming State Parks to fund new construction, improvements, and maintenance. Thank you for supporting your parks!

First-Come, First-Served Campsites
During the reservation season, most campsites require reservations.  However, there are some first-come, first-served (aka 'walk in') sites at most locations. 

Other Important Information

• Sites must be occupied nightly.

• Campsites may only be occupied by the individual associated with the account used to make the reservation.
   
• There is a 14-day camping limit in any 30-day period at any state park. This is a ‘rolling’ 30-day period so any number of stays totaling over 14 days within 30 days of each other (at the same park) is not permitted.
   
• Dogs must be on leashes when outside of a vehicle or camping unit.