National parks near Knoxville, Iowa
Gateway Arch National Park is the closest national park to Knoxville, Iowa — 243 mi (390 km) in a straight line, which works out to roughly 6 hr 12 min behind the wheel.
Nothing near Knoxville gates the entrance itself, but Voyageurs National Park puts a road, hike, or backcountry trip behind a permit or timed ticket.
Knoxville has a population of about 7,248.
National parks near Knoxville
| Park | Straight-line distance | Estimated drive | Realistic trip |
|---|---|---|---|
| Gateway Arch National Park | 243 mi (390 km) | 6 hr 12 min | Worth a longer road trip |
| Indiana Dunes National Park | 312 mi (503 km) | 7 hr 50 min | Worth a longer road trip |
| Hot Springs National Park | 470 mi (756 km) | 11 hr 34 min | Worth a longer road trip |
| Mammoth Cave National Park | 471 mi (758 km) | 11 hr 36 min | Worth a longer road trip |
| Voyageurs National Park | 496 mi (798 km) | 12 hr 12 min | Worth a longer road trip |
| Badlands National Park | 506 mi (815 km) | 12 hr 26 min | Worth a longer road trip |
| Isle Royale National Park | 519 mi (835 km) | 12 hr 44 min | Worth a longer road trip |
| Point Pelee National Park | 548 mi (882 km) | 13 hr 26 min | Worth a longer road trip |
| Wind Cave National Park | 551 mi (886 km) | 13 hr 29 min | Worth a longer road trip |
| Pukaskwa National Park | 595 mi (958 km) | 14 hr 32 min | Worth a longer road trip |
What to book before you leave Knoxville
| Park | What needs booking | Covers | How |
|---|---|---|---|
| Voyageurs | Voyageurs National Park Houseboat Permits | One hike or backcountry trip | Permit or lottery |
Camping near Knoxville
Within reach of Knoxville, 47 campgrounds across 7 parks appear on Recreation.gov: 33 at Isle Royale, 5 at Indiana Dunes, 5 at Mammoth Cave, and 1 at Hot Springs, plus 3 more parks with fewer sites.
Beaver Island at Isle Royale, Caribou Island at Isle Royale, Chippewa Harbor at Isle Royale, and Daisy Farm at Isle Royale do not take reservations, so they never show up as bookable inventory — in busy season that means arriving before mid-morning rather than planning around a confirmation.
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
Gateway Arch 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.
Planning a trip from Knoxville
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 Marion County
Common questions
What is the closest national park to Knoxville?
Gateway Arch National Park. It is about 243 mi (390 km) from Knoxville, roughly 6 hr 12 min of driving.
Can I do a national park day trip from Knoxville?
Not comfortably. The nearest parks are far enough that you will want at least one night away.
How many national parks are near Knoxville?
10 parks are within reach of Knoxville, 0 of them close enough for a day trip.
Do you need a reservation for the national parks near Knoxville?
None of them gate the entrance itself. 1 put a specific road, hike, or backcountry trip behind a permit or timed ticket — Voyageurs National Park Houseboat Permits. These requirements are usually seasonal, so check the date you plan to arrive.
Where can you camp near Knoxville?
Recreation.gov lists 47 campgrounds at the national parks within reach of Knoxville. They are spread across 7 of those parks. 33 of them are first-come, first-served, so they never appear as bookable inventory.
When is the best time to visit the parks near Knoxville?
For Gateway Arch National Park, the closest one, generally May through October. Either side of that, April and early November stays quieter.