A Walk and Ride Across Lake Champlain’s Remarkable Causeway

On the Lake Champlain causeway, the unusual part arrives quickly: water on both sides of a narrow former railroad line, with the Adirondacks in one direction and Vermont’s Green Mountains in the other. It is a trail that puts you out in the middle of the landscape rather than simply giving you a view of it from shore.

The old railway alignment has become a walking and biking route with a light crushed-gravel surface. Walkers, runners, and cyclists share the long open stretch, moving at their own pace with sailboats, kayaks, canoes, motorboats, and cabin cruisers passing across the water.

A short outing works beautifully here. So does a longer ride. The causeway can be an hour of fresh air and wide horizons, or it can be the memorable middle portion of a day spent pedaling from the Burlington area toward the Lake Champlain Islands.

Much of the appeal is simple geography. The route runs along a slim ribbon of land in the lake, so the view does not disappear after one overlook or one bend in the road. The lake stays beside you, broad and changeable, while mountains hold their place in the distance.

On clear days, the causeway has an expansive, almost offshore quality. The open setting is good for an unhurried walk, a quiet conversation, or the useful business of clearing your head without having to go anywhere particularly complicated.

The long exposure is also what gives the route its shifting character. A breeze can come off the lake and take the edge off a hot day. Clouds, boat traffic, and changing light keep the scene from becoming static, even on a straightforward out-and-back.

The path is primarily small crushed gravel rather than pavement. It is generally comfortable for touring bikes, mountain bikes, and electric-assist bicycles, and it is equally pleasant under walking shoes.

There are some uneven areas and a gravel gap around the midlake crossing, so this is not a perfectly uniform surface from end to end. Still, the route has the steady, unfussy feel many people want from a rail trail: room to keep moving, no need to negotiate traffic, and plenty of reasons to slow down.

Cycling makes it especially easy to turn the causeway into a larger outing. A ride from Burlington can reach the trail, and an out-and-back route that includes Burlington has been described at roughly 24 miles. The distance is less important than the rhythm of the day: ride, stop at the water, ride a little farther, stop again.

Large boulders along the rail trail give the route a few natural stopping places. Some people settle onto them to watch the lake; others bring fishing gear and cast out from the causeway.

Those rock perches are useful because the views invite lingering. You may pause to follow a sailboat across the water, pick out the distant mountain ridges, or simply sit for a few minutes while cyclists and walkers continue along the gravel.

The shared use gives the trail an easygoing social texture. There can be someone fishing nearby, a couple on foot, a runner moving through, and riders heading toward the ferry, all using the same narrow piece of land for very different versions of an afternoon outside.

At the midlake gap, the causeway does not continue as a rideable bridge. For cyclists continuing north, a bike ferry makes the crossing and connects the route toward South Hero and Grand Isle.

That small break in the trail is more than a logistical detail. Reaching the ferry feels like arriving at the edge of one outing and the beginning of another, with the island roads waiting on the far side.

Beyond the crossing, the route can open into quieter lakeshore roads, with inns, farms, restaurants, and a vineyard among the reasons to keep exploring Grand Isle. Bicycles are particularly well suited to this longer version of the trip, since they make it easy to combine the causeway, ferry, and island roads in one day.

Ferry service depends on its schedule, and a wait may be part of the plan. The crossing operates through passenger donations rather than a fixed trail admission, while access to the trail itself has been free.

Sunset gives the causeway another look altogether. With so much open water around it, the sky has room to spread out and reflect across the lake, while the mountain outlines gradually soften.

This is a fine time for a shorter walk rather than a full mileage project. A rock ledge, a boulder by the water, or simply a quiet stretch of gravel can become a place to stop and watch the light change.

The scenery changes through the seasons, but the defining image remains the same: a long, exposed path across Lake Champlain, water extending on both sides and mountains beyond.

The causeway is exposed to lake weather. Wind and cool temperatures can arrive even when the day began warm, so seasonal layers are useful. Summer also brings insects along the water.

Parking at the causeway is limited, with a small area described as holding roughly 10 to 12 vehicles. A Colchester parking area has bathrooms and a playground, a convenient detail for families or anyone beginning a longer outing.

For the simplest visit, walk or ride out as far as you like, find a boulder or open view that suits you, and turn back when the lake has had its say. For the bigger version, bring a bike and build the ferry crossing into the day.