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St. Mary Campground

Partial Shade

Glacier National Park · Montana, USA · 1370 m elevation · Check-in 1:00 PM · Check-out 12:00 PM

Glacier's largest east-side campground near the St. Mary entrance, with big-sky mountain views along the St. Mary River.

Shade reality: Open, windswept east-side terrain — scattered aspen and cottonwood thickets shade some A/B sites, but many sites are fully exposed.

Season: Open year-round. Primitive and first-come from Sep 12, 2026. Closed Jan 1, 2027 – Jun 30, 2027: construction (NPS). Official page ↗

Sun direction
Shadows fall this way
Sun path today
Sites at this time (zoom in for numbers)
In direct sun
In shade
Electric hookup

Individual sites · 139 mapped

Partial: 71

Shade ratings come from Recreation.gov site records. Click any dot on the map for site details; zoom in to see site numbers.

Shadiest sites on 2026-11-01 (least direct sun)

A13 · Loop A5.2 h sun
C120 · Loop C5.2 h sun
A12 · Loop A5.5 h sun
A14 · Loop A5.5 h sun
A15 · Loop A5.5 h sun
A16 · Loop A5.5 h sun
A17 · Loop A5.5 h sun
A33 · Loop A5.5 h sun

Precomputed estimate for the 15th of this month — all 139 sites, terrain + tree canopy (ETH 10 m, 2020) included.

Find a site

139 sites
Check availability & book ↗Found your site? Reservations happen on Recreation.gov — ShadeDial is an independent planning tool.Check-in 1:00 PM · Check-out 12:00 PMWhen to book: Recreation.gov 6-month rolling window — each arrival date opens exactly 6 months ahead (morning release). Popular sites go in minutes.

Remind me when booking opens

Shortlist your sites now, get an email before the window opens for St. Mary Campground. No account needed.

Arrival date is optional — it’s what tells us your exact opening moment at parks that release dates on a rolling window.

Official campground map148 sites

Cross-check site numbers against the park's own map before you book.

Loops A (45), B (50), C (58) — standard non-electric plus 14 tent-only and 1 group site. No hookups; max RV 40 ft (C loop best for RVs).

Open the interactive site map on Recreation.gov ↗

Source: official park map. Compare the loop layout with the satellite view above — north on the official map may not point up.

›Every site, one page each (139)sun by month, rig size, hookups

Hours are direct sun in mid-July.

Camped at St. Mary? If the sun and shade didn’t match what we said, tell me the site number and I’ll look at it — that feedback is the only way this gets more accurate.
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