The Boneyard at Reliance Park
The biggest off-leash footprint in the Boulder area, with real grass underfoot
About this park
An unusually large off-leash park in Erie with three separated sections, an interior walking loop, and a rare-for-Colorado grass-and-foliage surface instead of all gravel. Reviewers routinely call it the biggest dog park they've been to, with agility setups in one section and a shaded small-dog area.
Amenities
What visitors say
Synthesized from 210 Google reviewsReviewers praise the park's scale, the grass-and-foliage surface, and a well-kept interior loop that lets owners walk while dogs run. The three separated sections (main, small-dog, and a third area with agility) get repeat mentions as what makes the layout work.
A pride-of-place community: multiple reviewers describe regulars picking up stray poop around the park on their own. The compostable waste bag program is a visible sign the town takes the space seriously.
Best for
Before you go
Water dishes can become mud pits quickly if a dog knocks one over, so bring a towel and expect some clean-up for rollers. It's about a 30-minute drive from Denver but worth the trip for the size.
