South Boundary Road
Moderate · AceHart Mountain National Antelope Refuge, Oregon
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Add the first5.5 km3.4 mi
Distance
48 m157 ft
Elevation gain
1h 20m
Est. time
Route
Route type
- Parking nearby
What to expect on this trail
- Gently graded
- Hiking
- Running
How these were worked out
- Gently gradedestimated
- Nine tenths of this trail is at or below a 2.9% grade, so the climbing is easy going throughout. Source: DEM terrain profile, moderate confidence.
Biking is not listed. That means no explicit permission is recorded, which is not the same as a prohibition — see the bike section below.
Ace's Active Trek A real workout with honest climbing — pack water and snacks.
About this trail
South Boundary Road is a 5.5 km trail in Oregon. Route imported from OpenStreetMap (© OpenStreetMap contributors, ODbL); community descriptions, photos, and condition reports welcome.
Play the route
Fly the trail end to end, with the climb as it comes.
Conditions
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Elevation profile
Terrain sampled every 35 m from public elevation data.
- Descent
- 0 m
- High point
- 1844 m
- 90th percentile grade
- 2.9%
Bike access & suitability
Legal permission and physical difficulty are evaluated separately.
Legal access
Confirm before riding
No authoritative or explicit bicycle-access rule is recorded for this trail.
Estimated MTB suitability
Easy
35% confidence - score 7/100
- - Terrain: 2.9% 90th-percentile grade and 9 m climbing per km.
Source: No access source recorded - checked Aug 2, 2026 - rules v2
Posted signs and current land-manager closures always override OpenTrail.
Report incorrect bike access
Connecting trails
Trails whose path meets this one — plan a longer route or a loop.
Trails nearby
Other routes within about 15 km.
Photos
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Reviews
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Frequently asked
How long is South Boundary Road?
South Boundary Road is 5.5 km (3.4 miles) as a route. Allow roughly 1h 20m at a steady walking pace, not counting stops.
How hard is South Boundary Road?
OpenTrail rates it moderate. It climbs about 48 m overall, and its steepest sustained stretches run around 3%.
Where is South Boundary Road?
South Boundary Road is in Hart Mountain National Antelope Refuge, Oregon. The map on this page shows the full route, where it starts, and any mapped parking nearby.
Is there parking at South Boundary Road?
One mapped parking area sits within 1.5 km of the route. Parking comes from OpenStreetMap, so check the signage when you arrive.