San Juan Island National Historical Park · Washington

Mount Finlayson Trail

0.2 mi of trail, end to end · Hike The Mount Finlayson Loop Trail: 2.9 mi loop in the Service's write-up · about 20 ft of climbing · 264 ft–283 ft · hiking

264 ft 275 ft · 0.2 mi high 283 ft

Hike The Mount Finlayson Loop Trail 2.9 mi loop · the Park Service's write-up

1-2 Hours · dogs allowed

Start Mount Finlayson Trailhead

A grassy hill on a island with a winding road and a lighthouse in the distance
On a clear day, you will be able to see the Olympic Mountains and even Mount Rainier

The Mount Finlayson Loop Trail begins at the Jakle’s Lagoon Trail on the side of the parking lot nearest Cattle Point Road. On a clear day, hikers will enjoy breathtaking views of the Olympic Peninsula , Cascade Mountains , nearby islands, and Mount Rainier in the distance. As you cross the meadows, you may encounter foxes, eagles, and deer who live on this island. At 0.3 miles, you will encounter the junction with the Nature Trail. 0.25 miles later, you will ascend Mount Finlayson; at this point, you can shorten your hike by taking a connecting trail to Second Lagoon which loops back toward the trailhead or continue another 0.3 miles further for a longer loop.As the trail loops back, you walk down a long road through second-growth forest.

This area of San Juan Island was extensively logged during the 1800s and this forest has regenerated since its extensive exploitation. Today’s forest is lush with numerous Douglas Firs, wild roses, and ferns. As you walk back towards the trailhead, small side trails offer you the opportunity of visiting and exploring Third Lagoon, Second Lagoon, and Jakle’s Lagoon.

Accessibility This is a moderate trail that is 2.9 miles long and includes 380 feet of elevation gain.

This hike on nps.gov

All 20 trails in San Juan Island National Historical ParkFind a trailOn the parks mapPark on nps.gov

About this trail's facts

The lines are the National Park Service's public trails layer, the trailheads and the waterfalls, views, peaks and historic places along them the Service's public points of interest, read 2026-10-16 and simplified for the map; the length is the line's, end to end. The write-ups are the Service's own "things to do" text, unedited. Heights come from USGS 3DEP through Terrain Tiles on AWS (Mapzen/Tilezen), read along each line and rounded; a short trail on steep ground can be off by a few tens of feet. Closures change: check the park's own site before you go.