Calculating Your Route
Just a moment while we calculate your route...
Distance from Mt St Helens to St Helens
Route Information
The driving distance from Mt St Helens, Washington to St Helens, Washington is 112.5 mi (181.1 km)
The straight-line (air) distance is 19.1 mi (30.8 km)
The estimated flight time is 0 hr 2 min
The estimated travel time by road is 2 hours 37 minutes
Traveling secondary roads, substantial in a northwest direction. Average speeds around 40 mph.
Location Details
Origin:
Destination:
Journey Summary
Traveling from Mt St Helens, Washington to St Helens, Washington covers 112.5 mi (181.1 km) in a northwest direction. This secondary roads, substantial route typically takes 2 hours 37 minutes under normal conditions.
The route features scenic views along the way. with average speeds around 40 mph (64 km/h).
How is the distance calculated?
Driving distances are based on actual road data. We use advanced routing algorithms that consider traffic, tolls, highways, and local streets. For air distances (as the crow flies), we use the Vincenty formula. It's a precise method that accounts for the Earth's shape and provides accuracy up to 0.5 mm.
When multiple route options exist, we display both the shortest and fastest paths. Travel times are estimated based on typical speeds for each road type, though actual times may vary with traffic and weather conditions. All distances are shown in both miles and kilometers for convenience.