> Canonical: https://caparks.org/trails/ohlone-wilderness-trail-osm-11260605
> Content revision: 2026-10-20T20:49:54.866Z

HIKING ROUTE

# Ohlone Wilderness Trail

Alameda · approximately 26.4 mapped miles in California

[Alameda parks ↗](https://caparks.org/counties/alameda)

## The mapped route.

Only the mapped California portions are shown. Mileage is estimated from those lines, including mapped branches, and may differ from an official trail length. Disconnected lines are not instructions to cross unmapped land.

[View this route on OpenStreetMap ↗](https://www.openstreetmap.org/relation/11260605)

## Plan before you walk.

**Mapped distance**: 26.4 miles in California; approximate

**Route type**: Hiking route

**Mapped operator**: East Bay Regional Park District

**OSM walking network**: Regional

This route comes from community-maintained map data. Access, trail condition, difficulty, seasonal restrictions, and the route’s continuity have not been independently verified. Follow current official maps, signs, and closures.

## Parks along the mapped route.

Links indicate a mapped boundary overlap, not confirmation that the park manages every segment.

[Lake Del Valle State Recreation Area ↗](https://caparks.org/parks/lake-del-valle-state-recreation-area)

## Notices from parks along this route.

Each notice retains its own park, area, or regional scope. These notices do not establish a closure of the entire trail.

Visitor advisoryWater recreation

### Lake Del Valle State Recreation Area: Lake water

Park-specific information

- [Lake water](https://caparks.org/parks/lake-del-valle-state-recreation-area)

The official visitor page posts a blue-green algae caution advisory. Check the managing agency’s current water-quality information before swimming or boating.

[Read the official notice: California State Parks visitor directory ↗](https://www.parks.ca.gov/?page_id=537)Source checked Oct 20, 2026

## Source & map data

Trail data © [OpenStreetMap contributors](https://www.openstreetmap.org/copyright), under the [Open Database License (ODbL)](https://opendatacommons.org/licenses/odbl/1-0/). [OSM relation 11260605](https://www.openstreetmap.org/relation/11260605) · source snapshot Oct 20, 2026 · imported Oct 20, 2026.

[Download this trail geometry (GeoJSON)](https://caparks.org/data/trails/osm-relation-11260605.geojson) · [Markdown version](https://caparks.org/trails/ohlone-wilderness-trail-osm-11260605.md) · [Suggest a correction](https://caparks.org/about#corrections)