Highlight • Lake
Upper Grinnell Lake
Hiking
5.0
(3)
Upper Grinnell Lake is a stunning proglacial lake nestled within the majestic Glacier National Park in Montana, United States. Situated at an elevation of 1976 meters, this natural monument is a testament to the retreating Grinnell Glacier, which formed the lake in the 1930s. Its most striking natural features include the often-present small icebergs that calve from the glacier, creating a truly unique and memorable landscape within the Rocky Mountains.
What draws visitors to Upper Grinnell Lake is undoubtedly its breathtaking glacial beauty and the serene, otherworldly atmosphere. Hikers consistently rave about the vibrant turquoise waters, the dramatic backdrop of towering peaks, and the unforgettable sight of icebergs floating on the lake's surface. The sense of achievement upon reaching this remote and pristine location, combined with the spectacular viewpoints, makes it a highly cherished destination.
Before embarking on the journey to Upper Grinnell Lake, hikers should be prepared for an intermediate-level trek. The Grinnell Glacier trail terrain involves some elevation gain, so sturdy hiking boots are essential. Weather conditions in Glacier National Park can change rapidly, even in summer, so packing layers, rain gear, and plenty of water is advisable. Parking at the Many Glacier Hotel trailhead can fill up quickly, especially during peak season, so an early start is often recommended to secure a spot and avoid crowds.
The best time of year to hike to Upper Grinnell Lake is typically from mid-July through September, once the snow has melted and the trail is fully accessible. This period offers the most favorable weather conditions for enjoying the hike and the lake's beauty. The primary activity is hiking, with the trail offering incredible opportunities for photography and wildlife sightings, including mountain goats and bighorn sheep.
The most popular route to Upper Grinnell Lake is a roughly 8.9 km (5.5 mile) hike from the Many Glacier Hotel. This well-maintained trail offers a moderate challenge, making it suitable for those with some hiking experience. The Upper Grinnell Lake hike difficulty is considered intermediate, providing a rewarding experience without being overly strenuous for prepared adventurers.
Visitors often describe the moment they first glimpse Upper Grinnell Lake as truly magical, with the vibrant blue of the water contrasting sharply with the white icebergs and rugged mountain peaks. Many highlight the unique experience of seeing a living glacier up close and feeling the cool air emanating from the ice. The trail itself offers numerous scenic overlooks, allowing for continuous enjoyment of the surrounding wilderness.
For those planning their adventure, a variety of Upper Grinnell Lake trails routes are available, catering to different preferences and fitness levels. Whether you're looking for a challenging day hike or a scenic walk, komoot offers numerous options to explore this incredible natural monument. You can find detailed maps and information to plan your visit, ensuring you make the most of your time in Glacier National Park.
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Nearby routes
Best routes near Upper Grinnell Lake
5.0
(1)
56
hikers
11.2km
03:26
550m
50m
Embark on the Grinnell Glacier Trail, a moderate hike spanning 6.9 miles (11.2 km) with an elevation gain of 1801 feet (549 metres), typically completed in about 3 hours and 25 minutes. As you ascend, you will witness the stunning transformation of the landscape, from lush alpine meadows bursting with wildflowers to rugged, towering peaks like Mount Grinnell. The route offers spectacular views of pristine glacial lakes, including the distinctive milky turquoise waters of Grinnell Lake. Keep an eye out for local wildlife, such as mountain goats, as you make your way towards the active glacier. This trail provides a true immersion into the heart of Glacier National Park's dramatic scenery.
Plan your visit between late June and September for the best conditions, as the trail is usually clear of snow during these months. Starting your hike early in the day is always a good idea to avoid crowds and secure parking. You can also opt to use boat shuttles across Swiftcurrent Lake and Lake Josephine; these can significantly shorten the overall hiking distance, making the journey to the glacier more accessible. Always check the park's official website for current trail conditions and any necessary permits before you go.
This trail is renowned for leading directly to an active glacier, a rare and impressive sight. The unique geological features along the path, including cascading waterfalls and vibrant alpine flora, highlight the dynamic natural processes at work in this region. The presence of towering peaks such as Mount Gould further emphasizes the dramatic glacial landscape. It is a prime example of the natural beauty and ecological significance found within Glacier National Park.
5.0
(5)
32
hikers
11.3km
03:39
490m
490m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Elevation 1,980 m
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Frequently Asked Questions
What is the typical elevation gain for the Upper Grinnell Lake hike?
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.
Is the Upper Grinnell Lake trail suitable for families with children?
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.
Are dogs allowed on the Upper Grinnell Lake trail?
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.
What are the parking options and permit requirements for hiking to Upper Grinnell Lake?
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.
How long does it typically take to hike to Upper Grinnell Lake?
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.
Are there any less crowded alternatives or similar hikes near Upper Grinnell Lake?
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.
What kind of wildlife might I encounter on the Upper Grinnell Lake trail?
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.
What amenities are available near the Many Glacier Hotel trailhead?
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.
Is it possible to hike to Upper Grinnell Lake in winter or early spring?
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.
What specific landmarks or viewpoints should I look for along the Grinnell Glacier trail?
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.
What should I pack for a summer hike to Upper Grinnell 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!