Galyna Andrushko // Shutterstock
- Distance: 1,319 miles
- Park area: 146,344.31 acres
#25. White Sands National Park (New Mexico)
SL-Photography // Shutterstock
- Distance: 1,306 miles
- Park area: 30,779.83 acres
#24. Black Canyon of the Gunnison National Park (Colorado)
ShuPhoto // Shutterstock
- Distance: 1,263 miles
- Park area: 86,367.10 acres
#23. Guadalupe Mountains National Park (Texas)
Eric Foltz // Shutterstock
- Distance: 1,261 miles
- Park area: 801,163.21 acres
#22. Big Bend National Park (Texas)
Doug Meek // Shutterstock
- Distance: 1,239 miles
- Park area: 46,766.45 acres
#21. Carlsbad Caverns National Park (New Mexico)
Laurens Hoddenbagh // Shutterstock
- Distance: 1,200 miles
- Park area: 70,446.89 acres
#20. Theodore Roosevelt National Park (North Dakota)
Kris Wiktor // Shutterstock
- Distance: 1,196 miles
- Park area: 107,341.87 acres
#19. Great Sand Dunes National Park (Colorado)
Anna Krivitskaya // Shutterstock
- Distance: 1,195 miles
- Park area: 265,807.25 acres
#18. Rocky Mountain National Park (Colorado)
Zack Frank // Shutterstock
- Distance: 1,113 miles
- Park area: 33,970.84 acres
#17. Wind Cave National Park (South Dakota)
Matt Ragen // Shutterstock
- Distance: 1,069 miles
- Park area: 242,755.94 acres
#16. Badlands National Park (South Dakota)
Romiana Lee // Shutterstock
- Distance: 933 miles
- Park area: 49,076.63 acres
#15. Acadia National Park (Maine)
Canva
- Distance: 896 miles
- Park area: 64,701.22 acres
#14. Dry Tortugas National Park (Florida)
BlueBarronPhoto // Shutterstock
- Distance: 880 miles
- Park area: 218,222.35 acres
#13. Voyageurs National Park (Minnesota)
Canva
- Distance: 860 miles
- Park area: 172,971.11 acres
#12. Biscayne National Park (Florida)
Simon Dannhauer // Shutterstock
- Distance: 859 miles
- Park area: 1,508,938.57 acres
#11. Everglades National Park (Florida)
Canva
- Distance: 763 miles
- Park area: 571,790.30 acres
#10. Isle Royale National Park (Michigan)
Zack Frank // Shutterstock
- Distance: 564 miles
- Park area: 5,554.15 acres
#9. Hot Springs National Park (Arkansas)
Paul Brady Photography // Shutterstock
- Distance: 359 miles
- Park area: 192.83 acres
#8. Gateway Arch National Park (Missouri)
Delmas Lehman // Shutterstock
- Distance: 331 miles
- Park area: 15,349.08 acres
#7. Indiana Dunes National Park (Indiana)
Canva
- Distance: 312 miles
- Park area: 26,476.47 acres
#6. Congaree National Park (South Carolina)
Jon Bilous // Shutterstock
- Distance: 293 miles
- Park area: 199,223.77 acres
#5. Shenandoah National Park (Virginia)
Zack Frank // Shutterstock
- Distance: 277 miles
- Park area: 32,571.88 acres
#4. Cuyahoga Valley National Park (Ohio)
Steve Heap // Shutterstock
- Distance: 150 miles
- Park area: 7,021 acres
#3. New River Gorge National Park (West Virginia)
Canva
- Distance: 139 miles
- Park area: 522,426.88 acres
#2. Great Smoky Mountains National Park (North Carolina, Tennessee)
Wangkun Jia // Shutterstock
- Distance: 136 miles
- Park area: 54,011.91 acres
This story features data reporting by Karim Noorani, writing by Mike Taylor, and is part of a series utilizing data automation across 3,119 counties.
#1. Mammoth Cave National Park (Kentucky)