Cascade Lake – Mount Constitution loop from San Juan Island National Historical Park
Cascade Lake – Mount Constitution loop from San Juan Island National Historical Park
3.0
(2)
23
riders
Cascade Lake – Mount Constitution loop from San Juan Island National Historical Park
06:50
110km
1,510m
Cycling
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The route includes a crossing by ferry. The starting point of the route is right next to a parking lot.
Last updated: May 29, 2026
This route includes a ferry crossing
Tips
Includes a segment in which cycling is not permitted
After 3.06 km for 270 m
Waypoints
Start point
Parking
Get Directions
3.20 km
Frazer Homestead Preserve
Nature Reserve
39.1 km
Eastsound Waterfront Park
Highlight • Beach
Tip by
39.8 km
Crescent Beach Preserve
Highlight • Beach
Tip by
46.9 km
Cascade Lake
Highlight • Lake
Translated by Google •
Tip by
54.8 km
Summit Lake
Highlight • Lake
Tip by
56.0 km
Mount Constitution
Highlight • Summit
Tip by
56.0 km
Mount Constitution Observation Tower
Highlight • Monument
Translated by Google •
Tip by
75.4 km
Fowler Pond
Highlight • Lake
Tip by
99.3 km
Friday Harbor
Highlight • Settlement
110 km
End point
Parking
Way Types & Surfaces
Way Types
78.1 km
25.8 km
6.35 km
156 m
112 m
Surfaces
69.6 km
25.8 km
12.4 km
1.67 km
944 m
< 100 m
Sign up to see more specific route details
Sign up for free
Elevation
Highest point (720 m)
Lowest point (undefined)
Sign up to see more specific route details
Sign up for free
Weather
Powered by Foreca
Today
Sunday 19 July
22°C
9°C
0 %
Additional weather tips
Max wind speed: 15.0 km/h
to get more detailed weather forecasts along your route
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Description
The Cascade Lake – Mount Constitution loop from San Juan Island National Historical Park is one of those touring cycling routes that truly earns its difficult rating, offering a monumental challenge across two islands. This 68.6 miles (110.4 km) journey packs in 4953 feet (1509 metres) of elevation gain, demanding around 6 hours and 50 minutes of saddle time. It's a route best suited for experienced touring cyclists looking for a multi-island adventure with significant climbs and unparalleled views.
What to expect on Cascade Lake – Mount Constitution loop from San Juan Island National Historical Park
This loop is a dynamic journey through the diverse landscapes of the San Juan Islands, starting with the rolling valleys, bluffs, and rocky headlands of San Juan Island. You'll transition to Orcas Island, where the real climbing begins on narrow, winding roads with frequent steep grades. The ascent to Mount Constitution is particularly demanding, a 5-mile, 2,000-foot climb to the highest point in the archipelago. From the summit's historic observation tower, you'll be rewarded with breathtaking panoramic vistas of the Olympic and Cascade mountain ranges, Puget Sound, and even parts of Canada, making every pedal stroke worth the effort.
Planning your visit
Embarking on this multi-island cycling route requires careful planning, especially regarding ferry travel between San Juan Island and Orcas Island. Be aware that San Juan Island's main roads have limited bike lanes, and Orcas Island's roads are narrow with minimal shoulders, so caution is essential. While most surfaces are paved, some segments, particularly around Mount Constitution, may be unpaved and difficult, potentially requiring you to push your bike. The best time to visit for touring cycling is typically during the drier, warmer months when visibility from Mount Constitution is clearest.
Trail details
- Distance: 68.6 miles (110.4 km)
- Elevation gain: 4953 feet (1509 metres)
- Difficulty: difficult
- Estimated time: 6 hours and 50 minutes
Comments
Want to know more?
Sign up for a free komoot account to join the conversation.
Sign up for free