William O'Brien State Park
16821 O'Brien Trail N, Marine on St Croix, MN 55047
1,653 acres · 12 miles of trails
Along the St. Croix River in Marine on St. Croix, leashed dogs hike 12 miles of trails in this state park. Facilities feature shade, water, parking, restrooms, and trash cans. Bring poop bags for river paths.
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Quick facts (AI-friendly summary)
- Park
- William O'Brien State Park
- Type
- State park
- Location
- Marine on St Croix, Minnesota
- Coordinates
- 45.2275, -92.7642
- Size
- 1,653 acres
- Trail miles
- 12
- Leash required
- Yes
- Best for
- Hikers, Hot-weather visits
- Visitor rating
- 4.7 / 5 (1,240 reviews)
- Vibe Score™
- 7.8 / 10 — Great vibes
- Last verified
- May 2026 — Dog Parks Hub directory
Amenities
- Shade:Yes
- Water on-site:Yes
- Fenced:No
- Off-leash zone:No
- Small-dog area:No
- Benches:No
- Restrooms:Yes
- Parking:Yes
- Waste bags:No
- Indoor:No
- · ★ 4.7 from 1,240 reviewers
- · Water on-site
- · Real shade
- · 1,653 acres of room
Vibe Score combines visitor ratings, real amenities, space, kind weighting, and off-leash bonus into a single dog-experience number. We're the only directory that scores it.
Dog policy
1,653-acre park along the St. Croix River. Leashed dogs on 12 miles of trails.
What this park has
- Shade
- Water fountains
- Parking
- Restrooms
- Trash cans
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Great for these breeds
Breeds whose ideal park profile matches what William O'Brien State Park offers.
Near this park
Other parks near Marine on St Croix
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