Forest Road 4688
Hard · IvyWillamette National Forest, Oregon
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Add the first9.1 km5.7 mi
Distance
747 m2451 ft
Elevation gain
3h 15m
Est. time
Route
Route type
- 5 parking areas
What to expect on this trail
- Steep
- Sustained climb
- Hiking
How these were worked out
- Steepestimated
- Nine tenths of this trail is at or below a 18.0% grade, and its steepest climb reaches 28.5%. Source: DEM terrain profile, high confidence.
- Sustained climbestimated
- This trail gains 82 m of elevation per kilometre. 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.
Ivy's Peak Challenge Steep, long, or rough. Experienced hikers will love it.
About this trail
Forest Road 4688 is a 9.1 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
- 68 m
- High point
- 1407 m
- 90th percentile grade
- 18.0%
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
Moderate
35% confidence - score 45/100
- - Terrain: 18.0% 90th-percentile grade and 82 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
Trails nearby
Other routes within about 15 km.
- 900 m away
Ann Arbor Hot Springs trail
Easy · FernWillamette National Forest, Oregon
775 m · 10m · ↑ 0 m
- 1.8 km away
South Breitenbush Gorge Trail #3366
Moderate · AceWillamette National Forest, Oregon
6.95 km · 2h 0m · ↑ 255 m
- 5.5 km away
National Forest Development 4685-330
Easy · FernWillamette National Forest, Oregon
1.72 km · 40m · ↑ 161 m
- 6.3 km away
Rhododendron Ridge Trail #564
Hard · IvyMount Hood National Forest, Oregon
10.23 km · 2h 50m · ↑ 353 m
- 6.4 km away
Roaring Creek Trail #3361
Easy · FernMount Jefferson Wilderness, Oregon
2.59 km · 45m · ↑ 94 m
- 7.2 km away
Crown Lake Trail #3362
Easy · FernMount Jefferson Wilderness, Oregon
793 m · 15m · ↑ 66 m
- 7.4 km away
Triangulation Trail #3373
Hard · IvyMount Jefferson Wilderness, Oregon
9.78 km · 2h 35m · ↑ 268 m
- 8.0 km away
Triangulation Peak Trail #3374
Easy · FernMount Jefferson Wilderness, Oregon
913 m · 10m · ↑ 0 m
- 8.1 km away
South Breitenbush Trail #3375
Hard · IvyMount Jefferson Wilderness, Oregon
9.86 km · 3h 45m · ↑ 952 m
- 8.1 km away
Hawk Mountain Trail #564A
Easy · FernMount Hood National Forest, Oregon
632 m · 20m · ↑ 97 m
- 8.1 km away
Crag Trail #3364
Moderate · AceMount Jefferson Wilderness, Oregon
4.10 km · 55m · ↑ 28 m
- 8.7 km away
Red Lake Trail #719
Hard · IvyMount Hood National Forest, Oregon
8.56 km · 2h 50m · ↑ 548 m
Photos
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Frequently asked
How long is Forest Road 4688?
Forest Road 4688 is 9.1 km (5.7 miles) as a route. Allow roughly 3h 15m at a steady walking pace, not counting stops.
How hard is Forest Road 4688?
OpenTrail rates it hard. It climbs about 747 m overall, and its steepest sustained stretches run around 18%.
Where is Forest Road 4688?
Forest Road 4688 is in Willamette National Forest, Oregon. The map on this page shows the full route, where it starts, and any mapped parking nearby.
Is there parking at Forest Road 4688?
5 mapped parking areas sit within 1.5 km of the route. Parking comes from OpenStreetMap, so check the signage when you arrive.