What is the maximum RV length at Mammoth Campground (Yellowstone)?

Longest RV site listed: 40 ft (5 of 82 RV sites list a length) (per the listing)

Does Mammoth Campground (Yellowstone) have RV hookups?

81 no-hookup individual sites (per the listing)

How do I reserve a site at Mammoth Campground (Yellowstone)?

Reservable on Recreation.gov (per the listing)

Camping at Mammoth Campground (Yellowstone), WY

My trips

View all 12 photos

At a glance

RV sites up to 40 ft
Length limits vary by campsite.
No hookups
Pets welcome
Flush toilets

0 available sites

Available only0 open of 40 site types

Sold out for Nov 13 – Nov 15.

We checked every night of your stay on National Park Service: no site is open for all 2 nights. Some sites are open on some nights.

Flexible dates

View the next available two-night stay.

Looking for the next open dates…

Fixed dates

Compare nearby campgrounds open for these dates. Your camping setup, rig size, hookups and dates stay applied.

Nearby campgrounds open for these dates

Check National Park Service directly ↗

View full availability calendar · night-by-night from Recreation.gov

Availability on Recreation.gov. Showing 40 of 81 sites.

Site	Fr 13	Sa 14	Price
Mammoth site #2 standard nonelectric	W	W	$25
Mammoth site #3 standard nonelectric	W	W	$25
Mammoth site #4 standard nonelectric	W	W	$25
Mammoth site #5 standard nonelectric	W	W	$25
Mammoth site #6 standard nonelectric	W	W	$25
Mammoth site #7 standard nonelectric	W	W	$25
Mammoth site #8 standard nonelectric	W	W	$25
Mammoth site #9 standard nonelectric	W	W	$25

Site

Fr
13

Sa
14

Price

Mammoth site #2

standard nonelectric

$25

Mammoth site #3

standard nonelectric

$25

Mammoth site #4

standard nonelectric

$25

Mammoth site #5

standard nonelectric

$25

Mammoth site #6

standard nonelectric

$25

Mammoth site #7

standard nonelectric

$25

Mammoth site #8

standard nonelectric

$25

Mammoth site #9

standard nonelectric

$25

Trip idea

Ideas for your stay

An idea to start from, built from this campground's listing and real tours nearby. Times, openings and prices change, so check each before you go.

Day 1 · Arrive and settle in
- Check in and set up camp.
- go fishing (per the campground listing)
Day 2 · Get out and explore
- 2 Hour Rafting on the Yellowstone River 4 mi · 2 hr · from $95/person
- Scenic Float on the Yellowstone River 4 mi · 2 hr · from $95/person
Day 3 · One more stop, then head home
- Montana Whitewater Half Day Raft Trip - Yellowstone River 4 mi · 3 hr · from $92/person

Ways to stay

Bring a tent or have an RV waiting

Tent camping here: 81 sites take tents. See open sites ↑

Need an RV for your stay?

Rentals that may deliver here and whose listed length fits sites up to 40 ft. Delivery may be available — confirm fees and dates with the owner before you book.

2021 Braxton Creek Bushwhacker

Travel trailer · 13 ft · sleeps 4 · 30 mi from campground

$95/night listed · Outdoorsy · Delivery may be available

View rental

"Lucky the Adventurer", 2022 Dutchmen Aspen Trail

Travel trailer · 28 ft · sleeps 6 · 56 mi from campground

$155/night listed · Outdoorsy · Delivery may be available

View rental

Woods Getaway

Travel trailer · 31 ft · sleeps 6 · 57 mi from campground

$105/night listed · Outdoorsy · Delivery may be available

View rental

Things to do

Activities near Mammoth Campground (Yellowstone)

Bookable tours nearby

Paid experiences on Viator. Distances are from this campground when the tour lists its own start point.

2 Hour Rafting on the Yellowstone River

4 mi · 2 hr · from $95/person

Montana Whitewater Half Day Raft Trip - Yellowstone River

4 mi · 3 hr · from $92/person

Scenic Float on the Yellowstone River

4 mi · 2 hr · from $95/person

See 6 more bookable tours

Guided Yellowstone Wildlife Tour

4 mi · 8 hr · from $250/person

Best time to go

Seasons, rates and how booked it gets

Off-peak Oct 16–Dec 31: RV & Tent $25 per night

stays up to 30 nights (Recreation.gov rules).

Share of site-nights open, booked and closed on Recreation.gov for the next months, checked Nov 7. Months further out may not be released for booking yet.

Month	Open	Booked	Closed
Nov 2026	0%	0%	53%
Dec 2026	0%	0%	53%
Jan 2027	0%	0%	53%
Feb 2027	0%	0%	53%
Mar 2027	0%	0%	53%
Apr 2027	11%	8%	56%

Seasonal loop closures in this window: B (Nov 2026, Dec 2026, Jan 2027, Feb 2027, Mar 2027, Apr 2027); Tent (Nov 2026, Dec 2026, Jan 2027, Feb 2027, Mar 2027, Apr 2027); tent (Nov 2026, Dec 2026, Jan 2027, Feb 2027, Mar 2027, Apr 2027).

Plan your stay

How far ahead to book Mammoth Campground (Yellowstone)

For July weekends, book about 157 days ahead. Three in four July Friday and Saturday arrivals were booked later than that, and half were booked 29 days or less before arrival. Past timing is guidance, not a guarantee of what is open now.

See booking patterns

Arrival month	Fri/Sat arrivals: half booked at least	A quarter at least	Other days: half booked at least	A quarter at least
April	13 days ahead	32 days ahead	13 days ahead	35 days ahead
May	14 days ahead	146 days ahead	15 days ahead	142 days ahead
June	14 days ahead	67 days ahead	14 days ahead	148 days ahead
July	29 days ahead	157 days ahead	26 days ahead	152 days ahead
August	15 days ahead	143 days ahead	26 days ahead	159 days ahead
September	15 days ahead	143 days ahead	14 days ahead	136 days ahead
October	36 days ahead	115 days ahead	26 days ahead	90 days ahead

Months with fewer than 30 reservations of that kind are left blank. Sites where nearly every booking was made the day of arrival (pay on arrival) are left out. Closed seasons, windows not yet released for booking, and currently unavailable nights are separate from this history.

Based on Recreation.gov reservations, FY2015–2025 (22,331 reservations in the years scored). Counts reservations made, not nights actually camped: cancellations aren't in the data, and nights a site was closed count as not booked. FY2020–21 (COVID) are left out of the scores.

Camping at Mammoth Campground (Yellowstone)

At a glance

0 available sites

Amenities & location

Location

Mammoth Campground (Yellowstone): questions answered

At a glance

Reviews

Friendly hosts and staff · 2 reviews

Selected reviews

Campgrounds to compare

Yellowstone City Guest Ranch

Eagle Creek Campground - Custer Gallatin National Forest

Sun Outdoors Yellowstone North

Prefer a roof over your head

Explore nearby

Guides for this trip

Yellowstone City Guest Ranch

Eagle Creek Campground - Custer Gallatin National Forest

Sun Outdoors Yellowstone North

Ideas for your stay

Day 1 · Arrive and settle in

Day 2 · Get out and explore

Day 3 · One more stop, then head home

Bring a tent or have an RV waiting

Need an RV for your stay?

Activities near Mammoth Campground (Yellowstone)

Bookable tours nearby

Seasons, rates and how booked it gets

How far ahead to book Mammoth Campground (Yellowstone)

Standard sites (tent or RV)