If you read through these forums with any regularity, you'll recognize some of the following recurring themes:
* Eat out of a cooler. It's healthier and cheaper.
* Take frequent short breaks from driving to remain rested and alert.
* There are many more things to experience than just a few 'must see' places.
* Get off the Interstates and experience local America.
Well, it's easy enough to talk in such generalities, but is it really possible? So, I decided to set myself a challenge. I would assume that I was going to drive each of the major cross-country Interstates from end to end and that I would want to stop every 2-3 hours at a venue that would offer the opportunity to have a picnic lunch from a cooler, take an invigorating hike, and experience some refreshing scenery. Furthermore, each stop would have to be within just a few miles of an exit so as not to just add miles to the trip and wear me out in my quest for rest. And, if at all possible, they should be free.
It turned out that it was a painfully easy challenge. There are just so many resources out there: National, state and local parks; Wildlife refuges and forests; Historic sites and museums. There's nothing magical or unique about the lists that follow. It would be easy enough to find similar venues along all the other Interstates as well, or to find different sites along these routes that better met you own timing or interests. The real point is that any trip can be a series of pleasant 'Sunday' drives, rather than just a marathon slog down the highway with stops only to speak into the mouth of a clown.
The stops are in west to east or north to south order as appropriate.
N.B.: These lists are not meant to be exhaustive, exclusive, or eternal. While they get updated periodically, parks do close, websites are discontinued, and these particular sites may not fit with your tempo or interests. Most importantly, they show how easy it is to find something quite near to each and every Interstate pretty much every half hour or so along it. The ones listed here were each found with nothing more than a good atlas and/or a few minutes search on the web. Use them, but they should encourage you to find your own.
AZBuck
I-5
Millersylvania State Park
Molalla River State Park
Stewart State Recreational Area
North Mountain Park
Whiskeytown National Recreation Area
Stone Lakes National Wildlife Refuge
Pacheco State Park
Tule Elk State Natural Reserve
Griffith Park
For campsites along this highway check HERE.
I-10
Cibola National Wildlife Refuge
South Mountain Park
Saguaro National Park
Shakespeare Ghost Town
Franklin Mountains State Park
Van Horn city park
James Rooney Park
Eaton Hill Nature Center & Preserve
Friedrich Wilderness Park
Attwater Prairie Chicken National Wildlife Reserve
Southwest Louisiana National Wildlife Refuge Complex
Atchafalaya National Wildlife Refuge
Mississippi Sandhill Crane National Wildlife Refuge
Blackwater River State Park
Lake Talquin State Park
Osceola National Forest
For campsites along this highway check HERE.
I-15
Helena-Lewis and Clark National Forest
Fleecer Mountain Wildlife Management Area (video)
Camas National Wildlife Refuge
Caribou National Forest
Utah Lake State Park
Fremont Indian State Park
Quail Creek State Park
City View Park
Mojave National Preserve
San Bernardino National Forest
For campsites along this highway check HERE.
I-20
Monahans Sandhills State Park
Lake Colorado City State Park
Lake Mineral Wells State Park
Purtis Creek State Park
Lake Bistineau State Park
Tensas River National Wildlife Refuge
Okatibbee State Wildlife Area
Oak Mountain State Park
Sweetwater Creek State Park
Sumter National Forest
For campsites along this highway check HERE.
I-24
Ferne Clyffe State Park
Dunbar Cave State Park
Chickamauga and Chattanooga National Military Park
For campsites along this highway check HERE.
I-25
Edness Kimball Wilkins State Park
Cheyenne Botanic Gardens
Castlewood Canyon State Park
Trinidad Lake State Park
Fort Union National Monument
Petroglyph National Monument
Elephant Butte Lake State Park
For campsites along this highway check HERE.
I-30
Atlanta State Park
Lake Catherine State Park
For campsites along this highway check HERE.
I-35
Fort Snelling State Park
Beeds Lake State Park
Nine Eagles State Park
Ernie Miller Nature Center
El Dorado State Park
Arcadia Lake Parks
Ray Roberts Lake State Park
Waco Riverwalk
Landa Park
For campsites along this highway check HERE.
I-40
Mojave National Preserve
Kingman City Parks
Walnut Canyon National Monument
Petrified Forest National Park
Bluewater Lake State Park
Villanueva State Park
Glenrio Historic District
McClellan Creek National Grassland
Red Rock Canyon Adventure Park
Lake Eufaula State Park
Lake Dardanelle State Park
Cache River National Wildlife Refuge
Hatchie National Wildlife Refuge
Long Hunter State Park
Chilhowee Park
Lake James State Park
Alamance Battleground
Bentonville Battlefield
For campsites along this highway check HERE.
I-44
Twin Bridges State Park
Mark Twain National Forest
For campsites along this highway check HERE.
I-55
Edward R. Madigan State Fish & Wildlife Area
Mastodon State Historic Site
Big Lake National Wildlife Refuge
George P Cossar State Park
Homochitto National Forest
For campsites along this highway check HERE.
I-64
New Harmony State Historic Site
Falls of the Ohio State Park
Daniel Boone National Forest
New River Gorge
Riverview Park / Rivanna Trail
York River State Park
For campsites along this highway check HERE.
I-65
Tippecanoe Battlefield Memorial
Falls of the Ohio State Park
Radnor Lake Natural Area and Wildlife Refuge
Wheeler National Wildlife Refuge
Blount Cultural Park
For campsites along this highway check HERE.
I-70
Green River State Park
James M. Robb Colorado River State Park
Loveland Pass
Limon Wetlands
Sherman Wildlife Area
Wilson State Park
Crestview Park - Shunga Trail
Perry Memorial Conservation Area
Reifsnider State Forest
Carlyle Lake State Fish and Wildlife Area
Glenns Valley Nature Park
Buck Creek State Park
Salt Fork State Park
Laurel Hill State Park
Greenbrier State Park
For campsites along this highway check HERE.
I-75
South Higgins Lake State Park
Seven Lakes State Park
Van Buren State Park
Big Bone Lick State Historic Site
Levi Jackson Wilderness Road Park
Harrison Bay State Park
Panola Mountain State Park
Reed Bingham State Park
Paynes Prairie Preserve State Park
Hillsborough River State Park
Big Cypress National Preserve
For campsites along this highway check HERE.
I-77
Wolf Run State Park
Camp Creek State Park
Stone Mountain State Park
For campsites along this highway check HERE.
I-79
Washington Park
Stonewall Resort State Park
For campsites along this highway check HERE.
I-80
Folsom Lake State Recreation Area
Tahoe National Forest
Lake Tahoe State Park
Rye Patch State Recreation Area
Humboldt National Forest
Timpie Springs Waterfowl Management Area
Wasatch National Forest
Flaming Gorge National Recreation Area
Bamforth National Wildlife Refuge
Medicine Bow National Forest
Lake McConaughy State Recreation Area
Eugene T. Mahoney State Park
Lake Anita State Park
Rock Creek State Park
Lake Macbride State Park
Matthiessen State Park and Starved Rock State Park
Goose Lake Prairie State Park
Indiana Dunes National Lakeshore
Pokagon State Park
Resthaven Wildlife Area
Cuyahoga Valley National Park
Bald Eagle State Park
Delaware Water Gap National Recreation Area
For campsites along this highway check HERE.
I-81
Chenango Valley State Park
Locust Lake State Park
Antietam National Battlefield
Lexington
Hungry Mother State Park
For campsites along this highway check HERE.
I-84
Umatilla National Wildlife Refuge
Oregon Trail Interpretive Center
Lucky Peak State Park
Minidoka National Wildlife Refuge
Hyrum State Park
***
Fahnestock State Park
For campsites along this highway check HERE.
I-85
Eno River State Park
Crowders Mountain State Park
Victoria Bryant State Park
Tuskegee National Forest
For campsites along this highway check HERE.
I-90
Ginkgo Petrified Forest/Wanapum Recreational Area
Turnbull National Wildlife Refuge
Idaho Panhandle National Forests
Beavertail Hill State Park
Missouri Headwaters State Park
Lake Elmo State Park
Fort Phil Kearny State Historic Site
Keyhole State Park
Badlands National Park
Ft. Pierre National Grassland
Lake Vermillion Recreation Area
Kilen Woods State Park
Great River Bluffs State Park
Governor Nelson State Park
Grant Park
Pokagon State Park
Resthaven Wildlife Area
Presque Isle State Park
Iroquois National Wildlife Refuge
Old Erie Canal State Historic Park
October Mountain State Forest
For campsites along this highway check HERE.
I-94
Lake Elmo State Park
Pirogue Island State Park
Theodore Roosevelt National park (South Unt)
Long Lake National Wildlife Refuge
Buffalo River State Park
Birch Lakes State Forest
Hoffman Hills State Recreation Area
Rocky Arbor State Park
Illinois Beach State Park
Grand Mere State Park
Waterloo Recreation Area
For campsites along this highway check HERE.
I-95
Sunkhaze Meadows National Wildlife Refuge
Ferry Beach State Park
Borderland State Park
Sherwood Island State Park
Independence National Historical Park
National Mall
Petersburg National Battlefield
Raven Rock State Park
Santee National Wildlife Refuge
Savannah National Wildlife Refuge
Timucuan Ecological Preserve and Fort Caroline
Canaveral National Seashore
John D. MacArthur Beach State Park
For campsites along this highway check HERE.
Trans-Canada Highway
Paul Lake Provincial Park
Mount Revelstoke National Park
Yoho National Park
Fish Creek Provincial Park
Tillebrook Provincial Park
Cypress Hills Interprovincial Park
Shamrock Regional Park
Wascana Centre
Moosomin Regional Park
Spruce Woods Provincial Park
Birds Hill Provincial Park
Rushing River Provincial Park
Aaron Provincial Park
Sandbar Lake Provincial Park
Silver Lake Provincial Park
Kama Hills Nature Reserve
Red Sucker Point Nature Reserve
Lake Superior Provincial Park
Batchawana Bay Provincial Park
Chutes Provincial Park
Mashkinonje Provincial Park
Driftwood Provincial Park
Gatineau Provincial Park
Voyageur Provincial Park
Yamaska Provincial Park
Riviere-du-Loup Waterfall Park
Grand Falls Gorge
Mactaquac Provincial Park
Tidal Bore Park
Caribou Provincial Park
Alexander Graham Bell National Historic Site
For campsites along this highway check HERE.