Distance: 3,755.3 miles
Average Speed: 44 mph
Lowest Altitude: 282 ft below sea level (Badwater Basin, Death Valley)
Highest Altitude: 11,158 ft (Eisenhower Tunnel, Colorado)
Lowest Depth: 250 ft below earth’s surface (Mammoth Cave, Kentucky)
Hottest Temperature: 121 F
Coolest Temperature : 53 F
