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Bicycle Ride

Eastsound to Mt. Constitution Loop

Bicycle Ride · Washington
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Macs Adventure Verified partner  Explorers Choice 
  • Mt. Constitution Rd
    / Mt. Constitution Rd
    Photo: Hannah Lafleur, Macs Adventure
  • / Viewpoint on Mt. Constitution Rd
    Photo: Hannah Lafleur, Macs Adventure
  • / Summit Lake (Mt. Constitution)
    Photo: Hannah Lafleur, Macs Adventure
  • / Mt. Constitution Tower
    Photo: Hannah Lafleur, Macs Adventure
  • / View from summit of Mt. Constitution
    Photo: Hannah Lafleur, Macs Adventure
m 1000 800 600 400 200 -200 30 25 20 15 10 5 km

Enjoy a challenging yet rewarding climb up San Juan Island's tallest mountain, Mt. Constitution.

33 km
3:45 h
993 m
993 m

On this ride, you'll cruise along the coast before beginning your climb through Moran State Park and eventually conquering Mt. Constitution. Passing by quiet inland lakes, you'll make your way through moss-covered forests, before ascending a series of switchbacks. All the while, leading you past some breathtaking viewpoints on your way to Mt. Constitution tower. Be prepared for an approximately 6-mile ascent with numerous switchbacks and steep grade but keep in mind the ride down will be a fun one. 

Author’s recommendation

Although a challenge, the views from the top of Mt. Constitution are every bit worth the effort. On a clear day, you'll be able to spot the other San Juan Islands, Canada, and the magnificent Cascades Mountain Range. There are also some great short hike options in Moran State Park, making for an all-around excellent day. User
Hannah Lafleur
Updated: May 18, 2018

Highest point
722 m
Lowest point
-3 m

Safety information

You'll be traveling on paved main roads for the entirety of this ride but use caution as most roads have minimal shoulders. Motorists are generally very courteous to cyclists but use caution at all times. Use extra caution during the switchback section, both during the ascent and descent. Maintain slow speeds on the way day and use bike pullout lanes when necessary. 

Before starting your ride it’s always worth inspecting your bike for any damage. Check for any damage to the frame, components or wheels. Ensure there are no loose cables and that the tires are inflated and the brakes are working. Always wear a helmet when biking. If you are doubtful of the condition of your rental bike please call the office or the local bike shop on the number provided in your information pack. We also recommend keeping your bike light on and set to flash, even during daylight and stay away from posted private property areas. 


Always be prepared to bike through a change of weather conditions and do check for any local weather warnings before cycling. Good shoes, a windbreaker-type layer, sunscreen, and sunglasses are ideal items for a sunny day. If you happen to have rainy weather, waterproof pants and a jacket are a must. 

Most cyclists wear [fingerless] bike gloves for some padding on the handlebars. Don't forget a spare battery pack for an emergency charge of any navigation unit you may decide to use. Don't forget your camera and even a pair of binoculars if you plan on spending a little time whale watching. 

Tips, hints and links

Points of Interest


Make sure to stock up on supplies and food before heading off for the day as there are no food options once you reach the state park. Eastsound Co-Op offers made to order sandwiches and a variety of food options and bulk snacks. 

Cascade Lake and Mountain Lake

Two great spots for lunch, located just before Mt. Constitution climb with picnic tables, restrooms, and short hike options.

Mt. Constitution Tower

Once you have reached the summit of Mt. Constitution, make sure to climb the stone tower for exceptional views of the surrounding Islands and even Canada. The history of the Tower's construction is detailed throughout various rooms on your way up. 


Food and Drink

Once outside of Eastsound, there are no opportunities to purchase food and drink so make sure to stock up before setting off on your ride. The Eastsound Co-Op offers delicious made to order sandwiches and offers plenty of options for high protein snacks that will help you tackle the summit of Mt. Constitution. 


Intersection of Main St and N Beach Rd (7 m)
48.694541, -122.906308
10U 506894 5393504


Intersection of Main St and N Beach Rd

Turn-by-turn directions

0.0 miles - Starting from stop sign intersection of N Beach Rd and Main St, with the water on your right, head STRAIGHT ON Main St. traveling up the small hill.

0.1 miles - Reach Stop Sign intersection of Madrona Street and Main St. Continue STRAIGHT ON through stop sign. Main St will become Crescent Beach Dr.

1.0 miles - After riding along the bay and continuing up the hill, reach stop sign T intersection of Olga Rd. TURN RIGHT onto Olga Rd and continue down the hill, following signs for Moran State Park. You will remain on Olga Rd until you reach the turn for Mt. Constitution climb.

4.2 miles - Reach entrance to Moran State Park (Arch Entrance). Continue STRAIGHT ON down the hill, on the main rd. Restrooms on your right as you enter the state park if needed.

5 miles - You will reach Cascade Lake, picnic tables, and rest area.

5.2 miles - BEAR LEFT and continue on Olga Rd, following signs for Mt. Constitution.

5.5 miles - BEAR LEFT onto Mt. Constitution Rd. following signs for Mt. Constitution and Mountain Lake. Use caution as you cross the median.

6.6 miles - BEAR LEFT and continue on Mt. Constitution Rd, following signs for Mt. Constitution. If you prefer, you can BEAR RIGHT following signs to Mountain Lake if you're looking for a good lunch spot or short hike.

6.7 miles - Head STRAIGHT ON Mt. Constitution Rd, all the way to the top. Be prepared for multiple switchbacks and steep climb for the next 3.5 miles.

7.7 miles - Pull off for car parking and viewpoint! Good spot for a break and some amazing views.

8.6 miles - Arrive at Little Summit, continue STRAIGHT ON to Mt. Constitution.

10.2 miles - Arrive at the summit of Mt. Constitution. Take a break, enjoy the views and when ready, head STRAIGHT ON down the hill, following your same route back to Eastsound.

14.8 miles - Mt. Consitution Rd intersects with Olga Rd, continue STRAIGHT ON Olga Rd. as it wraps around the lake. Continue on Olga Rd for the next 4.5 miles (30 mins).

19.3 miles - TURN LEFT onto Crescent Beach Dr, making your way back to Eastsound.

20.4 miles - Your ride ends at your original starting point, stop sign intersection of N Beach Rd and Main St in Eastsound.


all notes on protected areas

Arrival by train, car, foot or bike

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33 km
993 m
993 m


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