A day at Boca Grande Key: Key West's backcountry beach escape
Most visitors never make it past the sandbars. Boca Grande Key is what's waiting for the ones who do — an uninhabited island off the western edge of the lower Keys, with a curve of white sand most people in Key West have never set foot on. It's close enough to reach in a morning and remote enough that you'll likely have a stretch of beach to yourselves.
- Where: West of Key West toward the Marquesas
- Distance: ~20 miles — about an hour on a calm day
- Status: Uninhabited; Key West National Wildlife Refuge
- Boat: Our Jeanneau NC 895, up to 6 guests, private
- Do: Empty beach, shelling, snorkeling, birds
- Bring: Everything — no services on the island
Where it is, and why almost nobody's there
Boca Grande Key sits about 20 miles west of Key West on the run out toward the Marquesas, part of the Key West National Wildlife Refuge. There's no dock, no bar, no rental stand — it's protected, undeveloped, and that's exactly why it stays empty. The standard tourist boats don't come this far, so the beach you find is the beach the way it's been for a long time.
The water on the way out tells the story: shallow, clear flats that run pale green over the sand, with the occasional dark patch of grass or coral. On a calm day you can see the bottom the whole way.
How far is it, and how long does it take?
Plan on roughly an hour's run each way on a calm day, which makes Boca Grande a comfortable full-day charter with plenty of beach time built in. We run it on our own Jeanneau NC 895 — up to six guests, a USCG-certified captain, and the tides timed so you're on the sand at the right state of the water. Conditions matter more than distance out here; a glassy morning and a windy afternoon are different trips, and the captain plans the day around what the water's actually doing.
What you'll actually do out there
This is a slow-down trip, not a checklist:
- The beach. Wide, soft, and usually empty. Good for swimming, walking the shoreline, or doing nothing at all under a hat.
- Shelling. Because so few people land here, the shelling is genuinely good — conch, whelks, and the kind of finds that are picked clean off busier beaches.
- Snorkeling. The flats and patch reefs around the key hold rays, small reef fish, and clear, calm water that's easy for kids and first-timers.
- Birds and quiet. It's a wildlife refuge for a reason. Wading birds, ospreys, and the general absence of engines and crowds.
Bring water, sun protection, and whatever you want for the beach — like the rest of the backcountry, there's nothing out there but the island.
Why this beats a standard sandbar stop
Sandbar trips are great, and we run plenty of them. But a sandbar is a gathering spot — boats raft up, music plays, and you share the water. Boca Grande is the opposite trip: a destination, a real beach, and space to spread out.
On a private charter it's your day. Six guests, the Jeanneau NC 895, and a captain who knows the tides well enough to put you on the sand at the right time and the clear water at the right state. Want to anchor off the beach, swim, then run the snorkeling spots on the way back? That's a normal day for us. The itinerary bends around what your group actually wants.
Pairs well with the rest of the day
A Boca Grande run leaves plenty of room. Most groups fold in snorkeling on the flats, a swim stop, and a slow cruise home — and it's an easy build into a custom full-day charter if you want sunset on the back end. If you'd rather keep it social and close, our sandbar trips are the shorter, livelier alternative.
Common questions
Where is Boca Grande Key?
West of Key West toward the Marquesas, part of the Key West National Wildlife Refuge. It's uninhabited and undeveloped — no dock, no services, no crowd.
How far is it, and how long does it take?
Roughly 20 miles west of Key West — about an hour's run on a calm day, run as a full-day private charter with plenty of beach time.
Can you actually go ashore on the beach?
Yes. It's an open, undeveloped white-sand beach that's usually empty, good for swimming, walking the shoreline, and shelling.
Is there snorkeling?
Yes — calm flats and patch reefs around the key hold rays and reef fish, and the clear, shallow water suits kids and first-timers.
What should I bring?
Everything, because there are no services. Water, sun protection, and whatever beach gear you want for the day.
How is this different from a sandbar trip?
A sandbar is a social raft-up where boats gather; Boca Grande is a destination beach with room to spread out and the sand mostly to yourselves.
Either way, it's the same boat, the same captain, and a day shaped around your group rather than a schedule. Book your day on the water and we'll point the bow west.
Six Fins runs private charters from the Perry Hotel & Hurricane Hole marinas in Key West. Small-group, custom, and led by a USCG-certified captain.