Old Dillon Reservoir

Central Front Range, Colorado

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Old Dillon Reservoir


  • Trailhead to Old Dillon Reservoir.- Old Dillon Reservoir
  • Some light climbing at the beginning.- Old Dillon Reservoir
  • View of Dillon Lake and Quandry Peak.- Old Dillon Reservoir
  • Aspens.- Old Dillon Reservoir
  • Great place to watch the sunset.- Old Dillon Reservoir
  • View of Dillon Lake.- Old Dillon Reservoir
  • Dillon Lake supplies drinking water to Denver metro.- Old Dillon Reservoir
  • Look for the hiker sign heading west.- Old Dillon Reservoir
  • The parking entrance is easy to miss.- Old Dillon Reservoir
Overview + Weather
Beautiful, easy hike. Very dog-friendly. Short drive from nearby towns.
Central Front Range, CO
Pets allowed: 
Net Elevation Gain: 
174.00 ft (53.04 m)
Parking Pass: 
Not Required
Preferable Season(s):
Summer, Fall
Total Distance: 
1.70 mi (2.74 km)
Trail type: 
Trailhead Elevation: 
8,980.00 ft (2,737.10 m)
Current Local Weather:
Hike Description

Hike Description

Pro Contributor

A local favorite, especially for dog owners, the Old Dillon Reservoir area has several trails for hiking and biking in a small system that offers relative solitude in a very convenient location with fabulous views of Lake Dillon and surroundings. A great introduction to this area is the aptly-named Old Dillon Reservoir Loop. A particularly nice time to do this hike is an hour or two before sunset when the light is very golden.

The trailhead parking is a bit hard to find while whizzing by in the traffic on Dillon Dam Road. Traveling westbound, the first (and only) indication of the turnoff is a little blue hiker's sign in the bushes about 100 yards before the parking driveway. Going eastbound, the parking area is on the left just past the Heaton Bay Campground entrance.

The trail heads north from the parking area before it quickly turns right to slowly climb the slope overlooking Dillon Lake. The hiker is treated to ever-higher views of the lake and islands below and the ranges of mountains above. To the northwest is the Gore Range with Mount Buffalo being the closest peak. To the southwest is the Tenmile Range with Tenmile Mountain dominating the skyline above the town of Frisco. The trail tops the ridge, and just below is the Old Dillon Reservoir. After encircling the lake there are a few trails to choose from to extend the hike, or you can simply return on the same trail to watch the deepening dusk change the colors on the expansive landscape.

Note: The trailhead sign indicates that the Old Dillon Reservoir trail is only 0.8 miles. This must be one way, because this hike’s total mileage was over 1.5 miles.

Updates, Tips + Comments

Updates, Tips + Comments

Field Guide + Trail Map

Field Guide + Trail Map

Location + Directions

Location + Directions

Nearby Camping + Lodging

(14 within a 30 mile radius)

Nearby Adventures

(60 within a 30 mile radius)

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