Diamond Lake Trail (#975)
Length: Fourth of July Trailhead (TH) to: Diamond Lake - 2.6 miles; Devil's Thumb Trail - 5.0 miles. DISTANCES ARE ONE-WAY.
Elevation: 10,100 feet at the Fourth of July TH; 10,940 feet at Diamond Lake; 11,400 feet at high point; 10,700 feet at Devil's Thumb Trail.
The Diamond Lake Trail forks left from the Arapaho Pass Trail and drops elevation for a half-mile before crossing the North Fork of Middle Boulder Creek. Diamond Lake is located a mile further uphill from the bridge and scenic waterfall. This stretch of trail is on a northeast-facing slope and holds snow long after the Arapaho Pass Trail has melted dry. Turn west on a marked side trail to Diamond Lake.
Continuing straight and passing the turnoff to Diamond Lake, the main trail continues for 2.4 miles, and climbs up to cross the ridge just above tree line. The return to tree line may be difficult to find - watch for rock cairns at the edge of the trees. The Diamond Lake Trail ends at Devils Thumb Trail.
Click here for a trail summary.
View a trail map here.
At a Glance
|Permit Info:||This trail lies within the Indian Peaks Wilderness Area:
|Best Season:||Hiking conditions are best from July through October|
|Restrictions:||Indian Peak Wilderness restrictions apply:
|Closest Towns:||Nederland, Colorado|
|Water:||Lakes and streams; treat water for drinking.|
|Restroom:||Practice Leave No Trace principles|
|Operated By:||U.S. Forest Service|
From Nederland, head south on Colorado Highway 119 for 0.5 miles. Turn west onto Boulder County Road 130 (signed for Eldora Ski Resort). Stay on the main road through the town of Eldora. Once the pavement ends continue another five miles to the Fourth of July Trailhead. This portion of the road is rough but passable in a passenger car during the summer months. This trailhead is extremely busy, especially on weekends, and parking is limited.
Access to the Fourth of July Trailhead is via Fourth of July Road. This road is maintained by Boulder County. There is no seasonal gate on this road. However, winter maintenance does not occur. In addition, once the town of Eldora receives a significant snowfall, plows pile snow at the end of the pavement creating a barrier to points west. Therefore, access in the fall is weather dependent. The road is not passable in winter. Boulder County typically plows this road open before Memorial Day weekend. Trails at this elevation are typically not snow free until July.