Antelope Bitterbrush Reserve protects 325 acres of wildlife habitat in the northwest Boise foothills. Cartwright Ridge and Barn Owl trails connect the Pierce Park–Cartwright Road area with the Cartwright Ranch and Hidden Springs area.
Plan your visit
Pierce Park Lane & Cartwright Road (trail-entry area), Boise, Idaho 83714
- Admission
- No admission price published on the city reserve page
- Hours
- Check current Ridge to Rivers trail conditions and posted closures
- Parking
- Nearby Cartwright Ridge lot closed through spring 2027; alternative visitor parking unconfirmed
- Restrooms
- Facilities at the reserve not confirmed
- Access
- Natural-surface foothills trails; wheelchair and stroller access not verified
- Setting
- Outdoor · Wildlife habitat and trails
Photos have not been added to this listing yet.
Parking and access update: The nearby Cartwright Ridge Trailhead parking lot at 9387 N Cartwright Road is closed for construction through spring 2027. An alternative public parking location and walking route into this reserve have not been confirmed. Before planning a visit, contact Ridge to Rivers at 208-608-7811 for current access advice.
🌳 Amenities & Features
- 🥾 Cartwright Ridge Trail #84 connects with Barn Owl Trail #85
- 🐦 Wildlife habitat and foothills scenery
- 🗺️ The official 2026 trail map lists Cartwright Ridge at 2.0 miles and Barn Owl at 1.4 miles. These are individual trail lengths, not a round-trip route.
💡 Good to Know
- Cartwright Ridge Trail #84 meets the Pierce Park–Cartwright Road junction. The map marks this trail-entry area, not a confirmed parking space.
- The city places the reserve north of Pierce Park Road, between Cartwright Road and Seamans Gulch Road.
- Avoid the trailhead construction area and follow posted closure signs. The Collister parking alternative in the closure notice is for Polecat Loop; a route from there into this reserve has not been verified.
- Check the official trail maps and current trail reports before visiting. Turn back if a trail is muddy.
Official information: City of Boise reserve details · Cartwright Ridge Trailhead closure
Listing review date: 2026-10-13. Alternative parking remains unconfirmed.