Lago Grinnell Superiore

While the intro describes the hike as an 'intermediate-level trek' with 'some elevation gain,' the specific ascent to Upper Grinnell Lake involves approximately 1,600 feet (488 meters) of elevation gain from the Many Glacier Hotel trailhead. This makes it a challenging but rewarding climb.

The Upper Grinnell Lake trail is considered intermediate in difficulty due to its length and elevation gain. While many active families successfully complete the hike, it may be challenging for very young children or those unaccustomed to longer treks. Consider the fitness level of all family members before attempting the full 5.5-mile (8.9 km) one-way journey.

No, dogs are generally not permitted on hiking trails in Glacier National Park, including the Upper Grinnell Lake trail. This policy is in place to protect wildlife and ensure the safety of all visitors. Service animals are an exception, but pets must be kept in developed areas like campgrounds, picnic areas, and along paved roads.

Parking is available at the Many Glacier Hotel trailhead, but it fills up very quickly, especially during peak season (mid-July to September). Arriving before mid-morning is strongly recommended. As for permits, Glacier National Park requires an entrance pass. Additionally, during peak season, a 'Going-to-the-Sun Road Corridor Vehicle Reservation' or a 'Many Glacier Valley Vehicle Reservation' may be required to access the Many Glacier area, depending on the time of day and year. Always check the official Glacier National Park website for the most current reservation requirements before your visit.

The hike to Upper Grinnell Lake from the Many Glacier Hotel is 5.5 miles (8.9 km) one-way. Most hikers budget between 5 to 7 hours for the round trip, including time for breaks, photography, and enjoying the lake. Factors like fitness level, trail conditions, and how long you spend at the lake will influence your total hiking time.

While Upper Grinnell Lake is a premier destination, if you're looking for potentially less crowded options in the Many Glacier area, consider hikes to Iceberg Lake or Swiftcurrent Pass. These trails also offer stunning glacial scenery and challenging terrain. For a different experience within Glacier National Park, explore trails in the Two Medicine or St. Mary areas, which can sometimes see fewer visitors than Many Glacier.

The Grinnell Glacier trail is known for its abundant wildlife. Hikers frequently report sightings of mountain goats and bighorn sheep, especially in the higher elevations. You might also spot marmots, pikas, and various bird species. While less common, black bears and grizzly bears inhabit the area, so carrying bear spray and knowing how to use it is highly recommended. Always maintain a safe distance from all wildlife.

The Many Glacier Hotel, which serves as the trailhead for Upper Grinnell Lake, offers several amenities. These typically include restrooms, a gift shop, a dining room, and a casual grill/deli. There are also boat tours available on Swiftcurrent Lake and Lake Josephine, which can shorten the hiking distance to Upper Grinnell Lake by a few miles. Accommodation is also available at the hotel, but reservations are essential, often far in advance.

The intro states the best time to visit is mid-July through September. Hiking to Upper Grinnell Lake in winter or early spring is generally not recommended due to heavy snowpack, avalanche danger, and trail closures. The trail is typically impassable until late spring or early summer when snowmelt allows for safe passage. Even in late spring, significant snow patches can remain, requiring specialized gear like microspikes or snowshoes.

Beyond the stunning destination of Upper Grinnell Lake itself, the Grinnell Glacier trail offers several notable features. You'll pass by Lake Josephine, often admired for its calm, reflective waters. The trail also provides panoramic views of Grinnell Falls cascading down the mountainside and offers glimpses of the Grinnell Glacier itself as you ascend. Keep an eye out for the historic Grinnell Glacier Overlook, which provides a fantastic vantage point before reaching the lake.

Even in summer, weather in Glacier National Park can be unpredictable. Essential items include sturdy hiking boots, layered clothing (including a waterproof and windproof outer layer), plenty of water (at least 2-3 liters per person), high-energy snacks, sunscreen, sunglasses, a hat, and bear spray. A map and compass or a GPS device are also advisable. Don't forget your camera for the incredible views!