Call Glen Craft Marina on the Tuesday after Labor Day and ask to rent a pontoon for the weekend, and you'll hit the same answer every year. The 2026 rental season ends on Labor Day weekend, full stop, and if you want a boat in September you're being pointed down the road to the marina's sister operation, On The Narrows Marina, which keeps renting pontoons and ski boats through the rest of the month. Two marinas, a few hundred yards apart on the same lake, running on two different clocks.
That small handoff says more about how Glen Lake actually works than any single date on a calendar. The lake doesn't shut down for the season the way a beach town might roll up its sidewalks. It closes in pieces, on different days, for different reasons, and knowing which piece falls when is the difference between a smooth end of summer and a Saturday morning spent making phone calls.
Two Marinas, One Cutover
Glen Lake is really two lakes joined at the middle. Big Glen runs to 130 feet in places and covers most of the lake's roughly 6,286 acres, while Little Glen, the shallower western basin, tops out around 12 to 13 feet and warms up faster every spring. The two are connected by a narrow channel under the M-22 causeway, a spot everyone on the lake just calls the Narrows.
That channel is also where the two marina operations sit, close enough that renters sometimes don't realize they're dealing with separate companies until the calendar forces the issue. Glen Craft Marina, on Big Glen, ends its rental season on Labor Day weekend every year. On The Narrows Marina, sitting right at the bridge between the two basins, picks up the slack in September with its own fleet of pontoons and ski boats. The shallow water right around that bridge stays a popular spot to anchor and let kids swim off the back of a boat well into fall, whichever marina the boat came from.
If your plans involve a boat after Labor Day, the marina you already know might not be the one that's open.
The Restaurants Are on a Different Schedule Entirely
While the marinas draw a hard line at Labor Day, the lake's restaurants pay it almost no attention. La Becasse, the French restaurant tucked into what used to be Woodcock's on the east shore, runs its patio happy hour Thursday through Saturday from 3 to 5 p.m. straight through summer and keeps it going into September. Nobody's rushing to close up before the boats do.
A short walk from La Becasse, Trattoria Funistrada is now in its fourth season under owners Susan and Mike Garver, who bought the restaurant from its founding owners a few years back after being regulars there for two decades themselves. The building itself has been serving meals for more than 90 years, and Funistrada has held its spot on the east shore for close to 30 of those, long enough that longtime staff worried what a change in ownership might do to the place. By most accounts, not much changed at all. A few doors down, Laker Shakes rounds out what's left of the old settlement of Burdickville, one of just a handful of businesses still standing where a lumber town used to be before the mills burned in 1870.
None of these businesses are watching the marina calendar. Some scale back their hours as fall comes on, but the shift happens gradually, on the restaurant's own terms, not on a fixed date tied to a holiday weekend.
What Never Actually Takes a Break
Underneath both calendars, the work that keeps Glen Lake the color it's known for doesn't pause at all. The Glen Lake Association just wrapped its second annual Keep It Blue Month in July, a campaign built around a real threat: Eurasian watermilfoil, an invasive plant that can turn Little Glen's sandy bottom into a mat of vegetation thick enough to choke out swimming and native species alike. The Association runs a free boat wash at 7075 W. Day Forest Road specifically to keep that plant from hitching a ride in on trailers and gear from other lakes, and its volunteers measure water clarity, phosphorus, and chlorophyll levels by hand every week through the summer.
"These pristine waters aren't accidental," said Kate Gille, the Association's executive director. "Our members, volunteers, and partners all help preserve the exceptional water quality that makes this place so special."
That monitoring doesn't stop because Labor Day passes. Neither does the risk. Fertilizer runoff, aging septic systems, and even fireworks debris all keep working on the lake year round, long after the last rental boat has been pulled for the season.
The Award That Landed a Week Before This Post
On August 15, the Association announced its 2026 Stewardship Award for Lakescaping, going to Steve LaRiviere and Jennifer Yanover for the work they did on their own shoreline. The couple first found Glen Lake on their honeymoon, moved to Glen Arbor to be near it, and eventually bought a cottage that Steve describes bluntly.
"It had orange shag carpet and banana-yellow siding," he recalled.
What they did with the property since is the more interesting part. Working with the firm Inhabitect, they laid 200 feet of coir logs along native plantings to buffer the shoreline against erosion, added rock to break up wave energy without resorting to a riprap wall, and replaced a standard driveway with permeable gravel that lets rain soak into the ground instead of running straight into the lake. It's the kind of project that only shows up on a homeowner's radar once the algae blooms start or the shoreline visibly recedes, and the Association's decision to spotlight it right as boating season winds down feels less like coincidence and more like a nudge. When the water traffic slows, that's exactly when it's worth looking at what's happening along your own bank.
Reading the Lake's Actual Calendar
Put it together and Glen Lake's transition out of summer isn't one date, it's several, stacked loosely across a few weeks. Glen Craft Marina goes first, hard stop on Labor Day. On The Narrows Marina keeps boats on the water through September for anyone who didn't get the memo. La Becasse and Funistrada keep serving on something closer to their own instincts than a fixed schedule. And the watershed work that keeps the lake blue in the first place never really has an off season at all, even if the visible signs of it, like a boat wash station or a stewardship award, tend to surface right around now.
For anyone who spends time on trails once the water traffic thins out, Alligator Hill and the Windy Moraine and Cottonwood trails inside Sleeping Bear Dunes National Lakeshore stay open well past Labor Day, offering some of the better views of both basins from above once the leaves start to turn.
Knowing which piece of the lake closes when isn't just trivia. It's the difference between showing up at Glen Craft on a September Saturday and getting turned away, or knowing exactly which dock to walk down to instead.
If you're the kind of person who tracks these details because you're already living the rhythm of this lake, or because you're starting to wonder what it would take to own a piece of its shoreline yourself, Peter Fisher has spent years watching these seasonal handoffs up close from Glen Arbor. Schedule a Leelanau County consultation when you're ready to talk about what's actually for sale around here, and what a place like this asks of the people who own it.
