Theo catching serious air on the back trails near Boulder Reservoir, flashing his signature grin with the Rockies standing proud in the distance. Photo credit: Sherrie Stille

Theo’s Trail Time Joyride: Flying High at Boulder Reservoir and Coot Lake

In today’s Boulder’s Dog of the Day, meet Theo—a trailblazing, air-catching, joy-filled pup who reminds us all how to live with unfiltered happiness. Captured mid-leap with a wide, floppy grin and the Rocky Mountains beaming in the backdrop, Theo is doing what he loves best: cranking it on the back trails near Boulder Reservoir and Coot Lake.

This epic image, taken by an award-winning photographer, perfectly frames a moment that feels pure Boulder—open space, natural beauty, and a dog living his best life.

Theo’s favorite stomping grounds are out in North Boulder, just past the bustle of town where the foothills roll into a playground of trails, water, and fresh mountain air. The area surrounding Boulder Reservoir and Coot Lake is a haven for dogs like Theo. Whether it’s dashing down the soft-packed trails, splashing into the water, or launching skyward for a frisbee, it’s no wonder this spot draws a loyal pack of four-legged adventurers and their humans.

The Coot Lake Trail is a local gem—flat, scenic, and full of sniff-worthy smells. Dogs are allowed off-leash under voice and sight control, making it ideal for well-trained dogs who want a little freedom. The wide, looping path circles the lake and connects with other trails leading toward the Boulder Reservoir or back toward the Eagle Trailhead and the open plains.

Coot Lake, Boulder, Colorado – Elevation 5,167 ft: A top destination for dogs, Coot Lake offers off-leash freedom, scenic views, and the perfect spot for a refreshing swim.

Theo’s top pick? The quiet connector trails that weave behind the reservoir and skirt the edges of the water. These lesser-traveled routes are lined with tall grasses, open fields, and panoramic views of the Flatirons. They’re perfect for a good run or a spontaneous leap into the air—something Theo’s clearly perfected.

Boulder Reservoir, meanwhile, has designated areas for dogs, including a seasonal dog beach that’s great for a splash and swim. In the off-season, the adjacent trails and shaded areas provide a peaceful escape where dogs like Theo can frolic without distraction.

Boulder Reservoir

But what truly makes this moment and this place special is the energy. Boulder is more than dog-friendly—it’s dog-celebrating. The community embraces the joy dogs bring to the trail, and Theo is a living example of that spirit: joyful, wild-hearted, and completely at home under the Colorado sun.

So here’s to Theo—the air-bound ambassador of Boulder’s back trails. May we all find our stride the way he has: off-leash, full speed, and with a smile that could melt the Rockies.

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