McBride & Robson Valley / Full trip pack
West Twin Old Growth
- Loop
- 1.2 km
- Elevation gain
- Approx. 50 m Terrain-model estimate; not a surveyed measurement.
- Walking time
- Unconfirmed
- Difficulty
- Easy
loop
A short interpretive forest loop among mature cedar and hemlock just off Highway 16 west of McBride.
1. Getting there and parking
From McBride, drive west on Highway 16 for approximately 29 km. Look for the small gravel trail parking area on the south side of the highway, roughly 800 m before the West Twin bridge when travelling from McBride. The lot is near a curve and can be easy to miss; identify the signed trail entrance before turning. The path enters the forest directly from this parking area.
- Drive west from McBride on Highway 16 and watch for the marked trail pullout before the West Twin river crossing.
Parking: Look for the small gravel pullout on Highway 16 about 29 km west of McBride, approximately 800 m before West Twin Bridge when driving west from town.
2. Walking the route
Follow the marked interpretive loop through the cedar-hemlock stand and return to the same roadside trailhead. Information signs explain the old-growth forest along the way. The published outing is about 1.2 km for the complete loop, so this record describes the short forest visit rather than any longer route into West Twin Park. Allow time to read the signs and look at the large trees; the source does not establish a wheelchair-standard surface or a separate measured elevation gain.
- Enter the forest beside the trail sign and follow the interpretive old-growth loop back to the roadside start.
The return
The tourism guide describes a 1.2 km loop. The forest circuit returns to its start rather than requiring a second trailhead.
Mapped outing: Published roadside trail access. 1.3 km measured along the mapped line; published trip measurements may differ.
3. Route map
The highlighted line follows the documented outing.
© OpenStreetMap contributors. Route geometry is available under the Open Database License (ODbL) 1.0. · Line source · Open Database License (ODbL) 1.0 · Source-line database: https://hikingprincegeorge.com/data/osm-route-lines.geojson
Elevation along the outing
Full loop
Start: Published roadside trail access · Finish: Published roadside trail access (1.3 km mapped).
Approximate ground elevation from a 90 m terrain model. Distance follows the mapped itinerary and may differ from published walking distance. This is a terrain-model profile, not a surveyed measurement. Any ascent total is identified separately with its own source or estimation method.
How the route order was checked
The named interpretive loop is closed in the OSM source. Its approach meets the loop at the exact same source coordinate. Walking the approach, closed loop and reversed approach produces a continuous 1.263 km outing, consistent with the tourism guide’s approximately 1.2 km complete circuit. The approach begins within 87 m of the historical published parking point; no parking-to-trail connector is invented.
Copernicus GLO-90 terrain elevations via Open-Meteo (CC BY4.0); linework: Open Database License (ODbL) 1.0
Copernicus DEM 2021 GLO-90 via Open-Meteo. Linework source: https://www.openstreetmap.org/way/405401665. Sampled and rounded for display.
Source: https://open-meteo.com/en/licence
Licence: CC BY4.0 elevation data; Open Database License (ODbL) 1.0 linework · https://creativecommons.org/licenses/by/4.0/
Profile source checked: 2026-10-18
Published locations
Numbered points match the map. Use the role beside each point. A summit or park reference point is not a parking location.
| Place and role | Coordinates | Source and notes |
|---|---|---|
| West Twin Old Growth historical published trailhead / parking area (2010) | 53.440187 -120.505363 | West Twin Old Growth trailhead: 53 26.4112 N, 120 30.3218 W (degrees and decimal minutes), PDF page 2.
Historical Highway 16 pullout location; current access not confirmed. The tourism-hosted guide identifies itself as a research copy and says access, trails and amenities have not been updated. Coordinate provenance is verified; current access is not. Source date: 2010 https://mcbridetourism.ca/wp-content/uploads/McBrides-Green-Guide.pdf |
How the elevation gain was established
Outing: loop outing from Published roadside trail access; 1.26 km along the mapped itinerary
Copernicus DEM 2021 GLO-90 via Open-Meteo (90 m resolution). v7-smoothed-ascent-1: interpolate retained terrain samples at 100 m spacing; apply one triangular 1:2:1 smoothing pass over ±100 m; preserve start, finish and documented turnaround heights; sum uphill excursions with a 5 m reversal threshold; round to nearest 10 m.
Approximate terrain-model ascent, not a field or GPS measurement. Coarse cells and smoothing can miss small climbs, switchbacks, structures and sharp terrain. Processing sensitivity is not a statistical confidence interval.
Sources checked 2026-10-19.
Your trip notes
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