The Last Stop Down the Bay
Cliff Island is the outermost year-round island served by Casco Bay Lines, the last stop on the “down the bay” run from Portland. It sits roughly six miles offshore, farther out than Peaks, Diamond, Long, or Chebeague. It is also the smallest year-round island in Casco Bay, with about 60 people who live here through the winter and a summer population that grows to nearly 200.
What makes Cliff Island distinctive, even among the Casco Bay islands, is what it does not have. There are no paved roads. No store. No restaurant. No harbor in the traditional sense, just a dock and a handful of moorings. The roads are unpaved tracks winding through spruce and oak. A few cars and trucks exist on the island, but most people get around on foot, by bicycle, or by golf cart. The whole place feels several decades removed from the mainland, which is precisely the point.
The ferry ride from Portland takes 60 to 120 minutes depending on the route and the number of stops the boat makes at other islands. The ride itself is the trip, threading through the inner and middle bay islands before reaching Cliff at the end of the line.
Walking the Island
Cliff Island is small, roughly one mile long and a half mile wide at its widest. You can walk the entire road network in about an hour. The unpaved roads pass through mixed forest, past weathered cottages, and along stretches of rocky shoreline. There are no marked trails, but the roads and informal paths lead everywhere you want to go.
The southern and eastern shores have rocky ledges and coves where you can sit and watch the open bay. The western side looks back toward the other Casco Bay islands and the mainland. On a clear day, the view from Cliff encompasses the full sweep of the bay.
A Fishing Community
Cliff Island is a working fishing community. Lobster traps are stacked near the dock, skiffs are hauled up on the shore, and the economy of the year-round community revolves around the fishery. The island’s handful of commercial fishermen head out early and return by afternoon.
The summer community is a mix of long-time seasonal families and newer arrivals. There is a strong sense of community identity and a shared commitment to keeping the island habitable year-round. The volunteer fire department, the island association, and the informal networks of neighborliness are what make year-round island life possible.
Getting There
Casco Bay Lines operates the ferry from 56 Commercial Street in Portland. Cliff Island is the last stop on the down-bay route. Five round trips run daily year-round. The crossing takes 60 to 120 minutes depending on how many other islands the boat stops at on the way.
Peak-season adult fares are approximately $16 round trip. Off-peak fares are approximately $8.50. All fares are collected at boarding in Portland.
The schedule can be complex, as the boat serves multiple islands. Check the Cliff Island schedule specifically and plan your outbound and return times before you go.
When to Go
Summer
Best season. Warmest weather, longest days. The summer community is in residence and the island is at its most active. Good for walking and shoreline exploring.
Fall
Quiet and atmospheric. Fewer people, beautiful light. The ferry continues on a full schedule.
Winter
Year-round residents only. Very quiet, very remote. Ferry continues but the island has no visitor services.
Spring
Muddy roads. Cool weather. Lobster gear going in. Not much for visitors.
Practical Notes
Bring everything you need. There is no store, no restaurant, no water fountain, and no restroom available to visitors on Cliff Island. Pack food, water, sunscreen, rain gear, and anything else you will need for your visit.
Cell service is spotty. Do not rely on it for ferry schedules.
The unpaved roads can be muddy after rain. Wear shoes you do not mind getting dirty.
Respect the residential character of the island. Stay on roads and public paths. Do not walk across private property.
FAQ
How do I get to Cliff Island?
Take the Casco Bay Lines ferry from Portland. Cliff Island is the last stop on the down-bay route. The crossing takes 60 to 120 minutes.
Are there any services on Cliff Island?
No. There is no store, restaurant, or public restroom. Bring everything you need.
Is Cliff Island worth visiting?
If you want to experience the most remote year-round island in Casco Bay, with unpaved roads and no tourist infrastructure, yes. It is a contemplative, quiet visit, not an activity-filled day trip.
How big is Cliff Island?
About one mile long and half a mile wide. You can walk the entire road network in about an hour.
Can I drive on Cliff Island?
There are a few cars on the island but no car ferry for visitors. Most people walk, bike, or use golf carts. The roads are unpaved.



