I've done a lot of road trips throughout the United States and Canada. Those trips took me to all 50 U.S. states (last one was Hawaii in 1999) and their capital cities, the District of Columbia, and Puerto Rico. I've also visited all the Canadian provinces and territories except the Northwest Territories and the recently-created Nunavut Territory (with no highway connections to the rest of Canada -- indeed, almost no roads, period), including stops at their respective capital cities except Quebec.
Within the United States, I've been to over 90% of its counties. The nationwide map showing the over 2800 counties I've visited (map download over 155K), at a county-counting site where I log my counties, should give you a good idea of where I've been in the 50 states, and the regions which I've covered most thoroughly.
I've traveled at least a few miles on every mainline (1- or 2-digit route number) Interstate, including the little-known unsigned Interstates in Alaska and Puerto Rico, and covered over 99% of the overall system's mileage. I've also been on almost all of the Interstate loop and spur routes (3-digit route numbers). Another site has a list of my "clinched Interstates" (Interstates where I've driven the entire mileage in a state, or overall). Still another has a map and tables showing all of my travels on the Interstate system.
I've driven the three highest auto roads in the United States (the Mt. Evans toll road in Colorado, climbing to 14,150 feet at a parking lot just below the summit; the Pikes Peak toll road in Colorado, to its summit at 14,110 feet; and John A. Burns Way almost to the summit of Mauna Kea on Hawaii's Big Island, topping out at about 13,780 feet), as well as the highest through road (Trail Ridge Road in Rocky Mountain National Park in Colorado, peaking at 12,183 feet), and the highest Interstate (west portal of the Eisenhower Tunnels on Interstate 70 in Colorado, at 11,158 feet). I've also driven the lowest road in the United States, Badwater Road in Death Valley National Park in California, dropping under -270 feet.
Note: Click any photo below to view a larger version.
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 High road,
low road: On the left, the parking lot atop Mt. Evans, Colorado,
the highest road in North America, photographed from the summit (my car is the
sliver one in the center, closest to the bottom of the photo and pointing toward the bottom); on the right, me at the lowest point in
North America in Death Valley, California, about a hundred yards from Badwater Road. Both photos were taken
on the same cross-country road trip, in summer 1996. |
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| The End Of The Line
(north): Me, wading into the Arctic Ocean, at the end of a van tour
up Alaska's Dalton Highway, northernmost highway in North America. (My flight back to Fairbanks stopped at Barrow, northernmost place in the United States, but I didn't get off the plane or take any pictures.) (July 1994)
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The End
Of The Line (south): Ka Lae, at the end of South Point Road on Hawaii's
Big Island, the southernmost point and road in the fifty states. (October 1999) |
 The End Of The Line
(west): This is as far west as you can drive from the rest of the North American highway network (via a long, expensive, auto ferry route to the Aleutians that only operates half the year), at the entrance to Port Lekanoff on Captains Bay Road in Unalaska, Alaska. (July 2007) |
The End Of The Line
(east): This parking lot is at the end of the unnumbered highway to the
Cape Spear National Historic Site in Newfoundland, easternmost point in
North America (not counting Greenland). The new and old Cape Spear lighthouses,
respectively, are in the background. (August 2003) |
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