Thousand Islands Parkway in Fall: What Closes and What Stays Open

Most people who live along the Thousand Islands Parkway treat Labour Day the way cottagers treat ice-out: a mental switch flips, and the whole 40-kilometre stretch between Gananoque and Butternut Bay quietly goes into hibernation until spring. That's not what happens. The Parkway doesn't shut down in one motion. It sheds pieces in a specific order over about five weeks, and the piece most residents assume closes last, the paved trail that runs alongside the road itself, doesn't close at all. It just stops belonging to summer.

That handoff is worth understanding if you spend any part of the fall on this corridor, whether you're walking a dog past Halsteads Bay, timing a hike at Landon Bay before the light goes, or wondering whether it's worth hauling the trailer to Ivy Lea one more weekend.

The Date That Already Passed

The first closure already happened, and most people missed it because nothing visibly changed. The Canada Strong Pass, which discounted camping and overnight stays across Parks Canada properties including Thousand Islands National Park, ran only through September 7 this year. The day after, Mallorytown Landing moved into its self-serve registration window, which runs through October 12, with the visitor centre's washrooms open 9 a.m. to 4 p.m. for the balance of that stretch.

The campgrounds run on a different clock entirely. Ivy Lea Campground and Brown's Bay, the two Parks of the St. Lawrence properties bookending the Parkway's midpoint, both list seasonal operating dates of May 15 through October 12 for 2026. Same closing date as the national park's island facilities, but arrived at independently, by a different provincial agency, for a different reason.

Here's how the pieces actually stack up:

Three separate closing mechanisms, two of them landing on the same date by coincidence rather than coordination. If your plan was "the Parkway shuts down after Labour Day," you'd have missed five weeks of a fully open day-use area and two campgrounds still taking reservations.

What Gets Better Once the Crowds Leave

Landon Bay Centre, about five kilometres east of Gananoque on the Parkway, is the one property on this stretch that arguably improves once the season turns. It's a 225-acre reserve inside the Frontenac Arch Biosphere Reserve, and it holds six named trails: the wheelchair-accessible Garden Trail, the Halstead Creek Trail that follows an osprey nest through hemlock and white pine, the short Riverview Trail with its single picnic table looking out at the river, the steeper Look-out Trail leading to a granite outcrop with panoramic views up and down the islands, the five-kilometre Donevan Trail named for longtime contributors Charlie and Kay Donevan, and the newer Bay Trail that traces the shoreline of Landon Bay itself.

Landon Bay is a genuinely unusual piece of geography even by Thousand Islands standards. It's one of the largest bays in the region, running nearly two kilometres inland before narrowing abruptly between steep granite walls, more fjord than bay at that point. Visitors who've hiked it in October consistently note the fall colour and the trail conditions holding up well into the season, with the added benefit of far fewer people at the lookout and fewer bugs on the trail than midsummer brings.

Because Landon Bay isn't tied to the same closing schedule as the campgrounds or the national park's day-use hours, it's one of the more reliable outdoor options on the Parkway once everything else starts trimming its calendar.

The Two Weeks Between One Season and the Next

There's a stretch, roughly the back half of October, when the summer infrastructure has wound down but the winter one hasn't started, and that's exactly when the corridor's social calendar fills in. The Lansdowne Craft Fair runs October 17 at the Lansdowne Community Centre from 9 a.m. to 3 p.m., three dollars for adults and free for kids under 12, a straightforward local tradition that doesn't depend on any park being open. Thousand Islands Winery follows on October 30 with a Comedy Night from 6:30 to 9 p.m., an evening event that works precisely because it's indoors and doesn't depend on what time Mallorytown's washrooms close.

Neither event needs the Parkway's outdoor season to still be running. They're built for the gap, and that's worth knowing if your fall plans assume the corridor goes quiet the moment the last campsite closes.

The One Piece of the Parkway That Never Actually Closes

Here's the part almost nobody who drives this road daily seems to know. The Parkway's 37-kilometre paved multi-use recreational trail, the one people walk, cycle, and push strollers on all summer, doesn't close for winter. It changes jobs.

The trail is owned by the St. Lawrence Parks Commission, and snowmobiling has technically been allowed on it since 2014. But for years that permission existed without real infrastructure behind it: no grooming, no dedicated signage, no formal oversight. That started to change in 2022, when the Commission signed a pilot partnership with the Elizabethtown Snowmobile Club, an Ontario Federation of Snowmobile Clubs District 1 club, to build an actual OFSC-sanctioned trail along the same paved right-of-way.

Getting there took more than a handshake. One of the trail's key crossings, at Highway 137, was blocked by provincial legislation under the Motorized Snow Vehicles Act that prohibited snowmobiles from crossing that road at all. It took the Township of Leeds and the Thousand Islands advocating through the Rural Ontario Municipal Association before the Ontario Ministry of Transportation granted a legislative exemption in November 2022, clearing the way for the Commission to sign its formal agreement with the club the following month.

Under that arrangement, the Elizabethtown Snowmobile Club now grooms the trail with an industrial groomer once minimum snow depth is reached, packing the snow into a surface that works for snowmobilers, walkers, and snowshoers alike, all of whom are expected to hold an OFSC permit if they're on a machine. ATVs, side-by-sides, and golf carts stay off it year-round.

What this means in practice is that the Parkway trail isn't a summer amenity with a winter dead zone. It's a single corridor that runs two different seasons of programming, cycling and walking from spring through fall, then a groomed snowmobile and snowshoe trail once the snow sets in, maintained by a local club under a partnership that took a provincial legislative exemption to make legal. That's not a detail you'll find on a tourism brochure, and it's the clearest evidence that this stretch of road was never designed to sit idle for half the year.

A Short FAQ

Does the Thousand Islands Parkway trail close in winter? No. It switches from a paved cycling and walking path to a groomed multi-use trail shared by snowmobilers, walkers, and snowshoers, maintained through the Elizabethtown Snowmobile Club's partnership with the St. Lawrence Parks Commission.

Can I still camp at Ivy Lea or Brown's Bay after Labour Day? Yes. Both campgrounds run their full 2026 season through October 12, well past the holiday weekend most people treat as the cutoff.

Is Landon Bay Centre open once the national park's other facilities close for the season? Landon Bay's trail network isn't tied to the same October 12 closing date as Mallorytown Landing's island facilities or the Parkway campgrounds, and fall is frequently cited as one of the better times to hike it, with cooler temperatures and better trail conditions than midsummer.

What's the best way to catch local events in the gap between closing season and winter? Watch the calendars for smaller, indoor-friendly gatherings like the Lansdowne Craft Fair and the Thousand Islands Winery's evening events, which run regardless of what's happening at the parks.

If you're already living along this stretch of the river, none of this changes your address. But it's the kind of texture that makes a place feel like yours rather than a postcard, and it's the same texture I try to bring to every conversation about buying or selling here. If you're weighing a move within the Leeds and the Thousand Islands corridor, or just curious what your own property might be worth heading into next season, Gerard Cabrera is glad to talk it through. Get Your Instant Home Valuation whenever you're ready to see where you stand.

This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.