If you’ve ever seen a photo of a bright turquoise lake surrounded by jagged peaks and thought, “there’s no way that’s real” — you were probably looking at Ice Lake Basin.
This trail, tucked high in the epic San Juan Mountains near Silverton, Colorado, is often called one of the most beautiful day hikes in the state, and in my experience, I think that’s underselling it.
The Ice Lake Basin Trail (also called the Ice Lakes Trail) is one of my absolute favorite day hikes in the United States — not just Colorado. Between the electric-blue alpine lakes, fields of wildflowers, and those rugged, colorful San Juan peaks, this trail just doesn’t feel real.
But make no mistake — getting there isn’t easy. With nearly 3,000 feet of elevation gain starting at almost 10,000 feet, this is a steep, high-altitude grind for those visiting from lower elevations.
If you’re up for a challenge with unforgettable rewards, here’s everything you need to know before hiking the Ice Lakes Trail.
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Where is Ice Lake Basin Trail?
The Ice Lake Basin Trail is located just outside the historic mining town of Silverton, Colorado, deep in the heart of the San Juan Mountains. This region is sometimes called the “Switzerland of America,” and for good reason — the peaks here are dramatic, colorful, and utterly wild.
The trail sits within the San Juan National Forest, about a 15-minute drive west of Silverton on Forest Road 585 (also known as South Mineral Road). You’ll find the Ice Lakes Trailhead just beyond the South Mineral Campground. A small dirt parking area marks the start of the trail, and you’ll likely see a full lot by sunrise on busy summer weekends.
How to Get to the Ice Lake Basin Trailhead
From Silverton, take US Highway 550 north for 2 miles, then turn left onto South Mineral Road (FR 585). Follow the road for about 5 miles — it’s unpaved but usually fine for passenger cars, although a higher clearance vehicle like an SUV is good if you have it.
📍 Ice Lakes Trailhead Coordinates: 37.8119° N, 107.7925° W | Get directions on AllTrails, here.
The Ice Lakes Trailhead parking area will be on your right just past South Mineral Campground.
- From Silverton: 7 Miles (15-20 minutes)
- From Ouray: 24 miles (45 minutes via the Million Dollar Highway)
- From Durango: 48 miles (1 hour 30 minutes)
Like most of Colorado’s most popular hikes, parking fills up fast, often before 6:00 a.m. in summer. I arrived just after sunrise in August to find the main lot was already full and snagged one of the first road-side spots. By the time I returned 6 hours later, the road was lined for over a mile with cars. You’ve been warned.
I suggest staying overnight nearby in Silverton or one of the dispersed camping areas along FR585 (first-come first-served), although bear in mind that dispersed camping in this area is about as popular as the trail itself, so arrive early in the afternoon to snag a spot.
Trail Stats
Download maps and get updated trail conditions on AllTrails, here.
| Ice Lake Basin Trail (Ice Lakes Trail) | |
|---|---|
| Distance | 7.8–8.2 miles round-trip |
| Elevation Gain | ~2,900 feet |
| Highest Elevation | 12,500 feet |
| Difficulty | Strenuous |
| Trail Type | Out-and-back |
| Dogs | Allowed on leash |
| Season | July – October, weather depending |
Need a map? Don’t forget to download your map and save it to your phone or GPS device before your hike! Get AllTrails+ (the most used trail app on my phone!) to download all your trail maps for offline use. Use my promo code brookeinboots30 to get 30% off your annual AllTrails+ subscription!
What to Expect on the Ice Lake Basin Trail (Mile-by-Mile Guide)
Mile 0–1
If you’re hiking on a weekend or during peak season, you may see a pop up tent staffed by volunteers for the San Juan Mountains Association at the trailhead. Have a chat with them about trail conditions, weather, and proper leave no trace steps to take while visiting this popular trail.
The trail starts climbing steadily right off the bat. The first mile passes through the burn scar of the 2020 Ice Fire, which left much of this section charred. You’ll see blackened trunks, open slopes, and the slow but steady return of wildflowers and new growth.
After about a mile, you’ll reach Clear Creek Falls, a beautiful cascading waterfall and a perfect spot for your first break. Once you cross the creek, the trail re-enters the forest.
In the fall this area is stunning with yellow aspens.
Mile 2–3: Lower Basin
The next stretch continues to climb steadily through thick pine forest and eventually opens into vast meadows surrounded by the higher peaks in an area called the “Lower Basin”. This spot is filled with wildflowers in July and August, including blue columbine, Indian paintbrush, and alpine buttercups.
After mile 2, the trail mostly flattens out and and parallels the creek for the next 0.7 miles. You’ll see several waterfalls cascading down the basin cliffs around you, and have to navigate some smaller water crossings.
Depending on snowmelt, rain, and your own rock-hopping abilities, you may need to take off your shoes for the final stream crossing.
If you plan on taking the alt Island Lake Trail to reach the Upper Basin, the signed turn off is at about mile 2.1. More on that option below.
There are a number of dispersed campsites in this area, but make sure to camp at least 100 feet from water, please!
Mile 3–3.5: Upper Basin to Ice Lake
The last mile to Ice Lake Basin is a steep climb of about 800 feet, taking you over 12,000 feet in elevation. Take your time, reapply sunscreen, and drink plenty of water as you fully enter the alpine.
If you aren’t used to exercising at high altitude, this part is going to feel a little relentless. But then, almost suddenly, the trail levels out and…
There she is!
The unreal turquoise glow of Ice Lake, surrounded by towering peaks like Fuller, Pilot Knob, and Golden Horn. It’s one of those “you’ve got to see it to believe it” views.
From here, perch yourself on a rock for lunch / breakfast using the unmarked trail that circles the lake.
Here you have a few options: return the way you came, continue on the trail to Fuller Lake, or take the side trail to Island Lake.
Mile 3.5-4.2: Ice Lakes Trail to Fuller Lake
To reach Fuller Lake, continue following the main trail on the southwest corner of the lake for another 0.7 miles, passing another 2 smaller unnamed lakes to Fuller Lake, the official end of the trail.
Here at 12,600 feet you’ll have views of the entire basin. This is also the highest point on the Ice Lakes trail, so if you’re already feeling the effects of altitude, I’d skip this and opt for Island Lake or turning around at Ice Lake instead.
Return to the trailhead the way you came, making sure to get below the treeline if you start to see storm clouds gathering. Make sure to pack out ALL your trash (I know, I sound like a broken record but people really do be misbehaving out here and ruining it for everyone).
Optional Side Quest to Island Lake
Download maps and info for Island Lake on AllTrails, here.
If time, energy and weather permit, combine this trail with the optional side trail to Island Lake. The hike adds less than 0.5 miles and about 250 feet of gain. After taking in Ice Lakes, take the side trail on the Northeast side of the lake (on your right as you first look at the lake).
The trail is steep, rocky, and exposed, but the reward is another mind-blowing lake — this one with a tiny island right in the middle. As you climb, don’t forget to to turn around and take in the insane view of Ice Lake and the peaks behind you.
From here, continue on the Island Lake trail back down into the Lower Basin, which joins with the main trail about 2 miles from the trailhead.
Difficulty, Altitude & Safety Tips
Ice Lake Basin is one of Colorado’s most beautiful hikes — but also one of the most deceptively tough. The combination of steep grades, rocky terrain, and high elevation make it a serious workout, even for experienced hikers.
A few tips for success:
- Spend at least one night in Silverton or Ouray to acclimate to the altitude.
- Start early — storms roll in fast in the San Juans, especially after noon.
- Bring 3+ liters of water, snacks and electrolytes
- Watch for signs of altitude sickness (headache, nausea, dizziness). If you feel severe symptoms, descend immediately.
- Pack warm layers — even in summer, the lakes sit over 12,000 feet and can feel icy cold.
What to Pack for Ice Lake Basin
You’ll need to be ready for mountain weather, exposure, and long stretches without shade. This is a serious day hike above the alpine. Just because a hike is popular doesn’t mean it can’t be dangerous or shouldn’t be taken seriously, and your safety is YOUR responsibility.
Essentials:
- 2–3 liters of water
- Snacks and a real lunch — you’ll want to linger at the top
- Trekking poles (highly recommended)
- Sun hat, sunglasses, and sunscreen
- Waterproof jacket (afternoon storms are common)
- Extra layers (fleece or puffy)
- Map or downloaded GPS track (no service).
I personally always carry a Personal Locator Beacon / Satellite communicator when hiking, like my Garmin InReach Mini 2 (monthly subscription required). With this device I can send text messages, track my hike, view offline maps, or hit the SOS button to contact search and rescue in a true emergency.
When is the Best Time to Hike Ice Lake Basin?
The trail is usually snow-free from late June through early October.
- June: Expect lingering snow and muddy trails.
- July–August: Peak wildflower season and clear trails — the most popular time to visit.
- September–October: Crisp weather and fewer crowds; golden aspens at lower elevations.
- Winter–Spring: Not recommended without mountaineering experience — avalanche danger and snow cover persist well into May.
Backpacking & Backcountry Camping at Ice Lake Basin
Most people tackle Ice Lake as a day hike, but backpacking is allowed — and it’s one of the most spectacular alpine overnights in Colorado if done responsibly.
The San Juan Mountains Association and Forest Service strongly recommend camping in the Lower Basin, before reaching Ice or Island Lakes. This area offers:
- Easier access to water
- Trees for hanging bear bags
- Better shelter from high winds and lightning
- Less impact on the fragile tundra near the lakes
Camping Guidelines:
- No campfires — fire restrictions are always in place here.
- Use bear-proof food storage (bear canister or proper hang).
- Pack out ALL trash, including food scraps and toilet paper.
- Use WAG bags — this area receives extremely high traffic.
- Choose durable surfaces (rock, gravel, or bare dirt) for your tent site.
This trail has exploded in popularity, and it’s up to all of us to protect it for future hikers, otherwise the Forest Service may have to close this area to overnight camping or require permits for parking and hiking.
Where to Stay Near Ice Lake Basin
If you’re not camping, the closest town is Silverton, about 15 minutes away. Here are some suggested spots:
- Budget: – The Avon: budget and pet friendly and right in town.
- Mid-range: – Grand Imperial Hotel: classic victorian charm and a kickin’ saloon downstairs.
- Camping: South Mineral Campground (first-come, first-served) or free dispersed camping along FR 585.
Read more about my favorite places to stay in Silverton, here.
Why Ice Lake Basin is Worth the Effort
This trail is everything mind-blowingly awesome about Colorado hiking: alpine lakes, wild colors that need no filter, wildflowers, rugged terrain, nonstop views of the San Juans, the constant threat of summer thunderstorms, and altitude that will kick your a@$.
The Ice Lake Basin Trail is challenging, yes — but it’s also unforgettable.
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