State guide
Montana lays claim to two of the country's greatest national parks: Glacier, with its alpine peaks and the famous Going-to-the-Sun Road, and Yellowstone, whose northern entrances and Lamar Valley wildlife sit on the Montana side. This guide compares the two.
Short answer
Glacier ranks first for its concentrated alpine drama and the Going-to-the-Sun Road, followed by Yellowstone for its geysers, canyons, and wildlife, much of it reached through Montana's northern gateways. Both are best from late June through September, when the high roads are open and the gateways are in full swing.
Each pick links to the full park guide with season tables, logistics, packing, and route context.
The alpine headlineGlacier is Montana's signature park, with jagged peaks, turquoise lakes, and the Going-to-the-Sun Road, one of the most spectacular alpine drives in the country.
Open the Glacier guide
The geyser giantYellowstone is enormous, and its northern entrances at Gardiner and the wildlife-rich Lamar Valley sit on the Montana side, with geysers, canyons, and abundant wildlife throughout.
Open the Yellowstone guidePlanning notes
Glacier sits in far northwest Montana and Yellowstone straddles the southern border, so they are a long drive apart. Most travelers visit one or the other rather than both in a single trip.
Gardiner and West Yellowstone are convenient Montana bases for Yellowstone's geyser basins and the northern wildlife valleys, and Bozeman is the nearest major airport.
Late June through September is the dependable window. Glacier's Going-to-the-Sun Road and Yellowstone's interior roads are seasonal, so summer into early fall is when both parks are fully open.
Montana has two national parks: Glacier, in the far northwest, and Yellowstone, which straddles the southern border and is reached through Montana gateways like Gardiner and West Yellowstone.
Glacier is usually ranked first for its concentrated alpine scenery and the Going-to-the-Sun Road. Yellowstone is the other giant, famous for its geysers, canyons, and wildlife, with major access points on the Montana side.
Late June through September is best for both. Glacier's Going-to-the-Sun Road and Yellowstone's interior roads are seasonal and snow-dependent, so summer into early fall offers the fullest access.
Gear keyed to what these parks are for, the tools to size your days and budget, and explainers worth a read before you go.
Season guide
A researched shortlist of national parks that make sense in October, with fall weather, crowd, route, and packing notes.
Open guideTrip style guide
The best national parks for a first trip, chosen for simple access, clear highlights, flexible lodging, and strong payoff without expert-level planning.
Open guideLow-friction guide
National parks where a strong first trip can be planned around accessible hikes, scenic drives, and flexible days without making one scarce permit the whole point.
Open guide