Here is a list of the biggest national parks in the US:
31. Petrified Forest, 221k acres
30. Mount Rainier, 236k acres
29. Capitol Reef, 242k acres
28. Badlands, 243k acres
27. Channel Islands, 250k acres
26. Rocky Mountain, 266k acres
25. Grand Teton, 310k acres
24. Hawaiʻi Volcanoes, 323k acres
23. Canyonlands, 338k acres
22. Sequoia, 404k acres
21. Kings Canyon, 462k acres
20. North Cascades, 505k acres
19. Great Smoky Mountains, 522k acres
18. Isle Royale, 572k acres
17. Kenai Fjords, 670k acres
16. Yosemite, 762k acres
15. Joshua Tree, 790k acres
14. Big Bend, 801k acres
13. Olympic, 923k acres
12. Glacier, 1013k acres
11. Grand Canyon, 1202k acres
10. Everglades, 1401k acres
9. Kobuk Valley, 1751k acres
8. Yellowstone, 2220k acres
7. Lake Clark, 2620k acres
6. Glacier Bay, 3223k acres
5. Death Valley, 3373k acres
4. Katmai, 3675k acres
3. Denali, 4741k acres
2. Gates of the Arctic, 7524k acres
1. Wrangell–St. Elias, 8323k acres
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