Chicago Lakes Trail

It's important to know that the Mount Blue Sky Recreation Area, which includes access to the Chicago Lakes Trailhead, is currently closed until the 2026 season due to road construction. Please plan your visit accordingly and check official sources for updates before heading out.

This trail is generally rated as challenging to difficult. It involves significant elevation gain, ranging from 1,999 to over 2,100 feet, and the entire hike takes place above 10,000 feet. Proper acclimatization to high altitudes is essential. The path becomes more rugged and steep after the initial descent, especially on the climb to Upper Chicago Lake.

The trail starts with an initial downhill section, meaning you'll face an uphill climb on your return. It then follows an old forest service road for a portion, passing the Idaho Springs Reservoir. Once you enter the wilderness, the path becomes more rugged, rocky, and steep. You'll traverse through pine forests, areas affected by a past wildfire, and eventually into a valley surrounded by granite peaks. Expect muddy sections, especially after rain, and potentially late-lingering snow at higher elevations.

The trail is renowned for its stunning alpine scenery. You'll pass the Idaho Springs Reservoir, then reach Lower Chicago Lake at treeline. Continuing on, you'll ascend to Upper Chicago Lake, which is above treeline, offering incredible views of a tranquil lake flanked by massive granite peaks like Mount Blue Sky, Mount Warren, and Mount Spalding. You might also spot a large waterfall and enjoy sweeping views of Lower Chicago Lake and the valley below.

When the trail is open, the best time to hike is typically from mid-July to mid-August. During this period, you can expect an abundance of blossoming Colorado wildflowers in a full spectrum of colors, adding to the already breathtaking scenery. Be prepared for high-altitude conditions regardless of the season.

Yes, dogs are allowed on the trail. However, it is mandatory that they remain on a leash at all times to protect wildlife and ensure a pleasant experience for all hikers.

Yes, a mandatory free self-issuing permit is required for the Mount Blue Sky Wilderness. Be sure to obtain this permit at the trailhead when the area is accessible.

When the area is open, the trailhead is located near Echo Lake. Trailhead parking is available at Echo Lake Park. Remember to check the current access status as the area is closed until 2026.

Hikers often spot a variety of wildlife along the route. Keep an eye out for bald eagles soaring overhead, marmots sunning themselves on rocks, and potentially even moose in certain areas. Remember to observe wildlife from a respectful distance.

Yes, more ambitious hikers can continue past Upper Chicago Lake to Summit Lake, which sits at 13,002 feet. For an even more arduous and extended trek, it's possible to attempt to summit Mount Blue Sky from there. These extensions are significantly more challenging and require advanced planning and experience.

Given its rating as challenging to difficult, significant elevation gain, and high altitude, the full Chicago Lakes Trail is generally not recommended for young children or families seeking an easy outing. However, the initial sections near Echo Lake and up to the Idaho Springs Reservoir are less strenuous and might be suitable for families looking for a shorter, easier walk.