Pick a site on the map to see its availability calendar.
Only 2 openings in the last 90 days: not enough recent activity for a reliable pattern. A free Campsite Sniper alert watches around the clock instead, and pings you the moment one opens.
Of the 4,209 tracked site-nights (Sep 18, 2026 – Mar 19, 2027): 1,131 open for online reservation · 23 reserved · 2,197 on sites not offered for online reservation (first-come, first-served or administrative) · 858 not yet released. Of the facility's 23 monitored sites, 11 can be reserved online and 12 are first-come, first-served.
Of the open site-nights on mapped sites, 648 fall on weekdays and 483 on weekends (Fri–Sun).
January shows no online availability. 0 of 713 tracked site-nights are open there — 372 on sites not offered online, 341 not yet released.
| Window | Night | Sites open | Status |
|---|---|---|---|
| Labor Day | SAT Sep 5 | 0 | None open |
| SUN Sep 6 | 0 | None open | |
| MON Sep 7 | 0 | None open | |
| Thanksgiving | THU Nov 26 | 11 | Open |
| FRI Nov 27 | 11 | Open | |
| SAT Nov 28 | 11 | Open | |
| Christmas | THU Dec 24 | 11 | Open |
| FRI Dec 25 | 11 | Open | |
| New Year | THU Dec 31 | 11 | Open |
| FRI Jan 1 | 0 | None open |
Labor Day: no online availability on any tracked night. Thanksgiving: 11 sites are available for the complete three-night stay. Christmas: 11 sites are available for the complete two-night stay. New Year: no site is currently available for the complete two-night stay. Friday has no online availability; individual Thursday night remains open.
| Site | Open site-nights |
|---|---|
| 001 | 105 |
| 002 | 105 |
| 003 | 105 |
| 006 | 105 |
| 007 | 105 |
The 5 sites with the most open site-nights in the current snapshot. Pair a bookable date with a free alert to cover everything else.
The next bookable night is Sep 18; the first open weekend starts Sep 18. Campsite Sniper can watch later dates for you.
Multi-night stays. 22 2-night, 20 3-night, 19 7-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 18 at site 001.
RV length. Longest recorded site here is 98 ft. 22 sites take 25 ft, 21 sites take 35 ft, 21 sites take 40 ft. 1 site of 23 has no recorded maximum and is not counted.
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 001 | 90 ft | None | 105 | 105 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +93 more |
| 002 | 48 ft | None | 105 | 105 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +93 more |
| 003 | 48 ft | None | 105 | 105 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +93 more |
| 006 | 48 ft | None | 105 | 105 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +93 more |
| 007 | 70 ft | None | 105 | 105 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +93 more |
| 010 | 58 ft | None | 105 | 105 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +93 more |
| 004 | 48 ft | None | 103 | 46 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +91 more |
| 005 | 48 ft | None | 100 | 69 nights | Sep 18, Sep 19, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Oct 2, Oct 3 +88 more |
| Simpson Springs Group Site | Not recorded | None | 100 | 75 nights | Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1 +88 more |
| 008 | 96 ft | None | 99 | 77 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +87 more |
| 009 | 32 ft | None | 99 | 77 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 23, Sep 24, Sep 25, Sep 26, Sep 27, Sep 28, Sep 29 +87 more |
The campground is situated on the eastern edge of Utah's West Desert near the historic Simpson Springs station on the Pony Express National Historic Trail. Simpson Springs was the site of a significant Civilian Conservation Corps (CCC) camp in the late 1930s and early 1940s, just prior to the establishment of the US Army Dugway Proving Grounds during World War II.
From I-80, take exit 199 (Tooele) and travel south on Highway 36 for approximately 40 miles. Turn right onto the Pony Express Road and travel for approximately 25 miles. The campground is approximately 12 miles south of Dugway, Utah, on the Pony Express Road.
View on Recreation.gov ↗ Get directions ↗












Reservations for Simpson Springs Campground are made through Recreation.gov. 73.1% of tracked site-nights are not currently open for online reservation; 1,131 of 4,209 remain open. Campsite Sniper has also detected 2 site openings here in the last 90 days, so further dates may appear. Pick a site on the map to see its calendar, or set a free Campsite Sniper alert. You complete the reservation yourself on Recreation.gov.
No. Campsite Sniper sends alerts and direct Recreation.gov links. It never books, pays for, holds, hoards, or resells reservations.
Campsite Sniper re-checks public Recreation.gov availability for this facility every hour and republishes whenever anything changes. This facility's data last changed at Sep 18, 2026 16:19 UTC; an older timestamp means nothing has changed since that time, not that checking stopped. Always confirm final availability on Recreation.gov when you book.
Campsite Sniper detected 1 site-date opening at Simpson Springs Campground in the last 7 days, 1 over 30 days and 2 over the last 90.
20 three-night openings are showing, counting only runs where the SAME site is free for all three nights. The soonest starts Sep 18 at site 001. Confirm and book on Recreation.gov.
21 of the 23 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 98 ft. 22 of those 23 sites have a recorded maximum length and 1 does not; it is not counted as fitting.
December 2026, with 341 open site-nights in the current snapshot of 713.
As of the Sep 18, 2026 snapshot: the next open date is Fri, Sep 18 and the next open weekend starts Fri, Sep 18. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
Lakefront, hookups, your RV length, weekends only - set it as picky as you want.
We run paced availability checks for Simpson Springs Campground. One watch covers every matching online-reservable site.
When a match opens, you get a push with a Recreation.gov link so you can review and book it yourself.
Alerts monitor online-reservable inventory only; first-come, first-served sites are not included.