National parks near Thornwood, New York
Thornwood sits inside the New York City area and reaches the same parks. See national parks near New York City for the full write-up.
Thousand Islands National Park is the closest national park to Thornwood, New York — 249 mi (400 km) in a straight line, which works out to roughly 6 hr 20 min behind the wheel.
Nothing near Thornwood gates the entrance itself, but 2 of the parks in range put a road, hike, or backcountry trip behind a permit or timed ticket.
Thornwood has a population of about 3,759.
National parks near Thornwood
| Park | Straight-line distance | Estimated drive | Realistic trip |
|---|---|---|---|
| Thousand Islands National Park | 249 mi (400 km) | 6 hr 20 min | Worth a longer road trip |
| Shenandoah National Park | 301 mi (485 km) | 7 hr 35 min | Worth a longer road trip |
| Rouge National Park | 338 mi (545 km) | 8 hr 28 min | Worth a longer road trip |
| Acadia National Park | 360 mi (579 km) | 8 hr 58 min | Worth a longer road trip |
| La Mauricie National Park | 394 mi (635 km) | 9 hr 47 min | Worth a longer road trip |
| Georgian Bay Islands National Park | 402 mi (648 km) | 9 hr 58 min | Worth a longer road trip |
| Cuyahoga Valley National Park | 404 mi (650 km) | 10 hr 1 min | Worth a longer road trip |
| New River Gorge National Park | 442 mi (711 km) | 10 hr 55 min | Worth a longer road trip |
| Point Pelee National Park | 456 mi (733 km) | 11 hr 14 min | Worth a longer road trip |
| Bruce Peninsula National Park | 486 mi (782 km) | 11 hr 57 min | Worth a longer road trip |
What to book before you leave Thornwood
| Park | What needs booking | Covers | How |
|---|---|---|---|
| Shenandoah | Old Rag Mountain Tickets | One road or area | Timed reservation |
| Acadia | Cadillac Summit Road Vehicle Reservations | One road or area | Timed reservation |
Camping near Thornwood
Within reach of Thornwood, 14 campgrounds across 4 parks appear on Recreation.gov: 5 at New River Gorge, 4 at Shenandoah, 4 at Acadia, and 1 at Cuyahoga Valley.
Recreation.gov releases most national park campsites six months before the arrival date, at 10:00 a.m. Eastern time. Windows are set per campground, so confirm yours on the Seasons and Fees tab on that campground page.
Once a date is gone, cancellations are the real supply, and they get taken within minutes of appearing.
When to make this trip
Thousand Islands National Park is generally best May through October, with April and early November as the quieter shoulder either side.
Winter brings cold, shorter days, and reduced services, though lower-elevation trails often stay walkable.
Peak summer weekends and autumn colour weekends fill parking lots early — arrive before mid-morning.
Seeing more than one
Several parks near Thornwood are close enough to each other to combine on one trip, so the drive from home only has to happen once.
| Pair | Apart | Estimated drive |
|---|---|---|
| Thousand Islands → Rouge | 165 mi (266 km) | 4 hr 22 min |
| Thousand Islands → La Mauricie | 222 mi (358 km) | 5 hr 43 min |
Planning a trip from Thornwood
Distances here are straight-line and the drive estimate adds a road factor on top, but mountain passes and seasonal closures can change it a lot — a route that looks like three hours in June can be shut entirely in February. Confirm road status with the park before you commit to a date.
Other towns in Westchester County
Common questions
What is the closest national park to Thornwood?
Thousand Islands National Park. It is about 249 mi (400 km) from Thornwood, roughly 6 hr 20 min of driving.
Can I do a national park day trip from Thornwood?
Not comfortably. The nearest parks are far enough that you will want at least one night away.
How many national parks are near Thornwood?
10 parks are within reach of Thornwood, 0 of them close enough for a day trip.
Do you need a reservation for the national parks near Thornwood?
None of them gate the entrance itself. 2 put a specific road, hike, or backcountry trip behind a permit or timed ticket — Old Rag Mountain Tickets at Shenandoah and Cadillac Summit Road Vehicle Reservations at Acadia. These requirements are usually seasonal, so check the date you plan to arrive.
Where can you camp near Thornwood?
Recreation.gov lists 14 campgrounds at the national parks within reach of Thornwood. They are spread across 4 of those parks.
When is the best time to visit the parks near Thornwood?
For Thousand Islands National Park, the closest one, generally May through October. Either side of that, April and early November stays quieter.