Posted on 9/5/2025 by Alyssa Schnarsky

Quick and Easy Fall Hike Close to Keystone, with Big Rewards

The Old Dillon Reservoir Trail: Big Views, Little Effort

Looking for a beautiful hike near Keystone that doesn't require a full day or a high fitness level? The Old Dillon Reservoir Trail is your answer. This quick and easy hike is perfect for families, a first-day acclimatization hike, or anyone who just wants to get out and enjoy the scenery without a long commitment.

Trail Details

Located off Dillon Dam Road near the Dillon Reservoir, this trail is just 1.7 miles round-trip with about 200 feet of elevation gain. It’s the perfect way to spend an hour and get some of the best views in the area and is just a quick 10 minute drive from your Keystone Vacation Rental. 

What You'll See

Even though the hike is short, the rewards are immense. The trail starts shaded by trees before opening up to incredible 360-degree views. You'll see Lake Dillon, Buffalo Mountain, Ptarmigan Peak, the Tenmile Range, and the Continental Divide. You can even spot Keystone's North Peak from the top!

The trail ends at the historic Old Dillon Reservoir, which was built in the 1930s. The fall foliage along the way is spectacular, especially in late September and early October. The stunning reflections in the water of the reservoir are a perfect photo opportunity. You can choose to extend the hike a little longer by walking around the lake when you get to the top, or turn around there after you've taking in the views! 


Directions from Keystone

From Keystone, head toward Dillon. At the traffic light near the movie theater and grocery store, turn left onto Dillon Dam Road. Drive for about 2.1 miles, and you'll see the trailhead on your right.

This hike is a local favorite, offering big rewards for very little effort. It's a must-do for anyone looking to experience the stunning fall colors of Summit County!



About The Author
Alyssa Schnarsky

Alyssa Schnarsky is the Marketing Director at SummitCove Vacation Lodging in Keystone and has worked in the vacation lodging industry for over 15 years. When she's not delivering exceptional content on all-things Keystone, you can find her hiking in the mountains, skiing the trees, enjoying a live concert, spending time with her tuxedo cat or planning her next adventure.

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