Sep 3, 2026

Boulder's Dog Parks: Three Fenced, One That Is Not a Park

Three fenced runs, one unfenced voice-and-sight area behind a partial fence, and a city that treats its dog parks as the on-ramp to 155 miles of trail.

Luis ZamoraCo-founder of PetCompass; Dog Dad to Banzo and Tuck

Boulder, Colorado10 min readThings to Do

Boulder's dog parks page lists four sites. Three are fenced dog parks. The fourth is something else, and the city says so in its own listing.

That distinction matters, because the fourth is an unfenced voice-and-sight area inside a park where the rest of the ground is lead-only.

The four sites

Site	Address as published	What it is
East Boulder Dog Park	5660 Sioux Dr.	Fenced, large and small areas, limited lake access
Foothills Dog Park	800 Cherry Ave.	Fenced, two acres, separate small and large areas
Howard Heuston Off-leash Dog Area	34th & Iris, then south to O'Neal Parkway	Not a dog park. Unfenced voice-and-sight area
Valmont Dog Park	approx. 5300 Valmont	Fenced, large and small areas, seasonal water spigot

Hours are the same everywhere, verbatim: "Dog parks are free and open to the public from dawn to dusk."

Free, and dawn to dusk. No fees, no permits, and no evening visits in winter, when dusk arrives before most people finish work.

East Boulder Dog Park, 5660 Sioux Dr.

Verbatim: "Fenced area for both large and small dogs. There is a concrete barrier in the lake that some dogs are able to climb."

Sizes as published: "Large area is about 1.5 acres." and "Small area is about .45 acres." Plus, verbatim: "There is limited water access to a small lake."

Read the barrier sentence as a warning rather than a feature. A concrete barrier in a lake that some dogs can climb is the city telling you a strong swimmer may get somewhere you did not plan for.

Foothills Dog Park, 800 Cherry Ave.

Verbatim: "Two acre fenced park with a separate areas for both small and large dogs." The wording is the city's.

Sizes: "Large area is about 1.6 acres" and "Small area is about .5 acres".

The most conventional of the four, and the one closest to central Boulder.

Valmont Dog Park, approx. 5300 Valmont

Verbatim: "Fenced area for both large and small dogs." Sizes: "Large area is about 3 acres." and "Small area is about .25 acres."

Three acres is the biggest large-dog run in the city, and by some distance. It also sits inside a bigger park, verbatim: "It is a dog park at Valmont City Park."

Water, verbatim: "A water spigot is available seasonally." Seasonally, so carry water outside summer.

Note the small-dog area is the smallest of the three fenced parks at about a quarter of an acre. If you have a nervous small dog, Foothills or East Boulder give it more room.

Howard Heuston, which needs its own explanation

Verbatim from the city's listing:

"Please note this as an off-leash dog area and has different rules than a dog park. Please visit the Howard Heuston webpage for a summary of the rules." "Voice and Sight Control area is designated north of the partial fence only." "Leashes are required in the remainder of the park." "The size of the Voice and Sight area is about 1.25 acres."

Three things follow from that.

It is a voice and sight area, not a fenced park. So the city's Voice and Sight standard applies rather than dog park rules, which in practice means your dog needs to meet a defined control standard rather than simply being off lead behind a gate. Our Voice and Sight Tag Program guide sets out that standard.

A partial fence is the boundary. North of it, off lead. South of it, lead required. There is no gate to keep your dog in.

And we have not read the separate Howard Heuston page, which the city says carries the rules summary. So do that before your first visit, and treat the bullets above as the outline rather than the full rule set.

The rules that apply inside all of them

Verbatim from the same page:

"City ordinances do apply in dog parks. All dog parks are within the city limits of Boulder and city ordinances are enforced. Leash laws do apply to all areas as you approach or exit the dog parks, whether walking home or to your parked vehicle. Aggressive animals are prohibited and should not be brought to dog parks. In all areas, guardians are responsible for picking up and removing pet excrement. This is not only the law, but helps to keep dog parks clean, water sources uncontaminated, and your shoes free of unwanted smells!"

The walk from the car counts. Leash laws apply as you approach and leave, which is where most citations in any city get written.

And the city's expectation of you inside, verbatim:

"It is your responsibility to respect other park visitors and their dogs. Some people may be training their dogs, some may be recovering from an injury, some may be young dogs unaccustomed to groups of dogs, etc. Regardless of fenced areas or not, you are expected to be attentive and be able to manage your dog's behavior."

"Regardless of fenced areas or not." A fence is not a substitute for supervision here.

Why the city runs them at all

This is the most useful line on the page, and it explains how dog parks fit into Boulder's wider system. Verbatim:

"Dog parks not only allow social interactions between people and their pets, but also a place to train in order to safely use Voice and Sight areas in the city system."

And from the Voice and Sight programme's own page, verbatim: "Public dog parks allow dogs to be off-leash even if they don't meet the voice and sight control standard."

So the dog parks are the on-ramp. A dog that is not ready for open space belongs here, and this is where you build the recall that the trail regime demands. Our dog training for voice and sight control guide covers the city's own coaching on how, and our dog park etiquette and how to leash train a dog guides cover the fundamentals.

What a Boulder dog park visit is actually for

Worth being concrete about, because the city's framing changes how you should use these four sites.

In most cities a dog park is the destination. In Boulder it is the training ground for something bigger: 155 miles of open space trail, most of it walkable with a dog, a good share of it off lead if your recall is good enough. The city says as much on both pages.

So the useful question is not whether your dog enjoys the park. It is whether the park is teaching the specific skills the trail regime demands. Those skills are named in the city's own voice and sight standard: your dog comes to you and stays with you immediately on command, and it does not charge, chase or harass people, dogs, wildlife or livestock, "without regard to circumstances or distractions".

Three ways to make a dog park visit do that work.

Practise recall inside the fence, repeatedly, before you need it outside. Call your dog out of play, reward it, release it back. A dog that only ever gets recalled at the end of the visit learns that recall ends the fun.

Watch the other dogs as data. A park is the cheapest place to learn how your own dog reacts to a bouncy adolescent, a wary rescue or a barking terrier behind a fence.

And leave before it goes wrong. The city's rule that "Aggressive animals are prohibited and should not be brought to dog parks" cuts both ways: a dog that has had enough is a dog whose next interaction is likelier to be the bad one.

What about the rest of Boulder's parks?

Verbatim: "Dogs are allowed on leash in most Boulder parks. Areas where dogs are not allowed, such as sports complexes, have signs posted."

On lead in most parks, banned at sports complexes, signposted where it applies. Our where dogs are not allowed in Boulder guide collects the restrictions, and note that the open space system is a separate regime again, covered in our dogs on OSMP trails guide.

Your dog needs a licence to be here

Not stated on the dog parks page, but it follows from the city's licensing rule. Verbatim from the dog licensing page: "A dog license is required for all dogs over the age of four months, living within the city limits of Boulder ." And: "All dogs are required to wear their city license tag on their collar or harness at all times."

At all times, which includes inside a dog park. Our Boulder dog licence guide covers the process, the four-month threshold and the 30-day deadline for new arrivals.

Choosing between them

Biggest run: Valmont, at about three acres for large dogs.

Best for a small or nervous dog: Foothills, whose small area is about half an acre, or East Boulder at about .45 acres. Valmont's small area is about a quarter of an acre.

Water in summer: Valmont has a seasonal spigot. East Boulder has limited lake access, which is a different thing and comes with the concrete barrier caveat.

Training ground for open space: any of the three fenced parks, then Howard Heuston's voice and sight area as the intermediate step before a trail.

And in winter: all four close at dusk, so plan around the light rather than the clock. The city's winter dog advice covers frostbite on "Paws, tails, and ears" and warns to "Keep pets away from frozen bodies of water", which is worth remembering at East Boulder specifically. Our cold weather pet safety guide covers the rest.

If something goes wrong, city Animal Protection is a division of the police department and takes reports on 303-441-3333, with non-emergency enquiries on 303-441-1874. Our reporting a dog bite in Boulder guide covers what follows, and our emergency vets in Boulder guide has the two verified 24-hour hospitals.

Frequently asked questions

How many dog parks does Boulder have? The city lists four sites: three fenced dog parks at East Boulder, Foothills and Valmont, plus the Howard Heuston Off-leash Dog Area, which the city notes is an off-leash area with different rules rather than a dog park.

What are Boulder dog park hours? Free and open to the public from dawn to dusk, per the city.

Which Boulder dog park is biggest? Valmont, whose large-dog area is about three acres. Foothills is a two-acre park with a 1.6-acre large area, and East Boulder's large area is about 1.5 acres.

Is Howard Heuston a fenced dog park? No. The city states that the Voice and Sight Control area is designated north of the partial fence only and that leashes are required in the remainder of the park. The voice and sight area is about 1.25 acres.

Do city ordinances apply inside a dog park? Yes. The city states that all dog parks are within the city limits and that city ordinances are enforced, and that leash laws apply as you approach or exit the park.

Is there water at Boulder's dog parks? Valmont has a water spigot available seasonally. East Boulder has limited access to a small lake, which contains a concrete barrier that some dogs are able to climb.

Sources

Park details and hours change. Check the city's page and the signage on site.