The King Lake via Devil's Thumb Trail is a 11 mi
looped trail that starts and ends in Eldora,
Boulder County, Colorado.
Based on our data, the trail is graded as Difficult.
For information on how we grade trails, please click here.
Also, check our latest community posts for trail updates.
This trail can be completed in approx 2 days. Caution is advised on trail times as this depends on multiple variables. For more info, click here.
Total Elevation Gain
Total Elevation Loss
Avg Elevation per KM