Glacier National Park Camping

Families and mixed groups wanting the park's largest campground with lake access and the best shot at a last-minute opening among the high-season sites. Not the place for solitude seekers.

Apgar is the anchor campground of Glacier's west side, with 184 standard nonelectric sites spread through forested terrain near the southern tip of Lake McDonald. Evening sunsets over the lake are a genuine draw, and the proximity to the West Entrance and Going-to-the-Sun Road trailheads makes logistics easier than anywhere else in the park. The booking data reflects its popularity: August is the hardest month with only 20.9% of its 3,886 reservations made last-minute, but April offers the clearest window with 76.9% last-minute availability across 216 reservations. Note that an Apgar reservation does not include access to the vehicle reservation zones on the west side of Going-to-the-Sun Road — that requires a separate permit from Recreation.gov.

Scout troops, family reunions, and organized groups targeting a west-side base camp. Requires the most aggressive advance planning of any campground in the park — this is a 6-months-out booking or nothing.

The Apgar Group Sites are the most competitively booked campground in all of Glacier by the advance-planning metric: 51.0% of August's 100 reservations were made 6+ months out — no other campground comes close. Even May shows 45.5% planned 6+ months out across just 33 reservations. With only 5 group sites available, the math is brutal: if you want a summer group booking here, you need to be on Recreation.gov the moment the booking window opens in January. The generous 97-foot vehicle limit accommodates large group rigs and equipment trailers. September is technically the 'easiest' month with 19.4% last-minute bookings, but that's still an extremely low availability signal for a 5-site pool.

Hikers who want direct trailhead access to Avalanche Lake and Trail of the Cedars, and RV campers up to 26 feet who want a wooded west-side base. Not for those wanting solitude in shoulder season — it opens late and fills instantly.

Avalanche Campground sits in one of the most popular hiking corridors on Glacier's west side, with 86 standard and 4 walk-to sites tucked into dense forest. The max vehicle length is listed at 63 feet, but a critical caveat: only 50 of the 90 sites can accommodate vehicles up to 26 feet — the rest are effectively tent and small vehicle territory. The booking data here has a notable quirk: June shows 100% last-minute bookings across 54 reservations, indicating the campground opens very late in June and all early reservations are walk-ups. By July, 54.2% of 1,920 reservations are still last-minute, making it one of the more accessible campgrounds for spontaneous planners. August tightens hard with 20.2% booked 6+ months out across 2,070 reservations.

West-side campers who missed Apgar and need a plan B — Fish Creek is the second largest campground and shares the same Lake McDonald corridor. Vehicle length limited to 35 feet, so larger rigs should look elsewhere.

Fish Creek is the second largest campground in Glacier and occupies the same western corridor as Apgar, giving tent campers and smaller RVs an alternative anchor on the park's most-visited side. The booking pattern here is slightly tighter than Apgar in early season — only 25.8% of May's 817 reservations were last-minute, suggesting planners lock it in early before summer hits. August remains the hardest month with 20.7% booked 6+ months out across 3,838 reservations. The 35-foot vehicle cap rules out larger rigs entirely. Like Apgar and St. Mary, this reservation does not include a Going-to-the-Sun Road vehicle pass — budget for a separate Recreation.gov permit.

Serious hikers and wildlife watchers who want the east side's best trails and grizzly country without the Going-to-the-Sun Road crowds. The 22-mile drive from St. Mary and zero cell service make this a full commitment.

Many Glacier sits at approximately 4,500 feet on the east side of the park, roughly 22 miles from St. Mary and 12 miles from the closest services in Babb, Montana. This is the campground for people who want Glacier's most dramatic scenery — think Grinnell Glacier trailheads and frequent bear sightings — with a genuine backcountry feel despite being a drive-in site. There is no cell service. September is the hardest month to plan for, with 22.6% of 873 reservations booked 6+ months out — the highest rate of any month at this campground. October flips the script entirely: 99.0% of its 315 reservations are last-minute, offering one of the park's best walk-up windows for fall campers who can handle shoulder-season cold.

Tent campers and those with small vehicles or tow setups who want the most intimate Lake McDonald shoreline experience in the park. Hard limit of 21 feet means trailers and most motorhomes are completely excluded.

Sprague Creek is Glacier's most vehicle-restrictive campground — the 21-foot combined length cap (including bumpers) effectively makes this a tent and small passenger vehicle-only space. What you get in exchange is one of the best settings in the park: tree-shaded sites on the northeast shore of Lake McDonald along Going-to-the-Sun Road, with some sites offering unobstructed water views. At just 22 sites, it's intimate but scarce. The booking window is more forgiving than the bigger campgrounds — July holds the highest last-minute rate at 45.3% across 578 reservations — but September is the hardest month with 20.4% planned 6+ months out, a signal that fall shoulder campers prize this spot. If you're pulling any kind of trailer, this campground is not an option.

East-side explorers and large RV rigs — the 90-foot max vehicle length is among the most generous in the park. Best for those using St. Mary as a base for Logan Pass and the east side.

St. Mary sits at the east entrance to Glacier and offers the most generous vehicle length limit among the reservation campgrounds at 90 feet, making it one of the few viable spots for large fifth-wheels and motorcoaches. The dataset here covers 7 bookable sites in the reservation system, with August being the hardest month (20.6% of 1,163 reservations booked 6+ months out) and July showing the most last-minute flexibility at 47.7%. Like Apgar, a St. Mary reservation does not grant access to Going-to-the-Sun Road vehicle reservation zones. The open, prairie-adjacent setting near the St. Mary Lake entrance is a different vibe than the wooded west-side campgrounds — less shade but wider skies.

East-side hikers and campers wanting a quieter alternative to Many Glacier, with some of the park's best day hike access and a surprisingly lenient vehicle policy. The most last-minute-friendly campground in peak season if you're flexible.

Two Medicine offers an unusually generous 120-foot vehicle limit — the highest of any campground in Glacier — and a mix of 91 standard, 6 tent-only, and 1 group site spread across loops with different generator rules (allowed in Loops B and C, prohibited in Loop A). The Two Medicine Valley is less trafficked than Many Glacier but arguably has equally strong day hiking, with no other services or accommodations in the valley. The booking data makes a compelling case for late-season visits: September shows 60.2% last-minute bookings across 1,438 reservations, the highest last-minute rate of any campground in any month in the dataset outside of shoulder season. August is the hardest month with 17.8% planned 6+ months out across 2,137 reservations. October is effectively walk-up only — 100% of 145 reservations were last-minute.