Interstate 80 pretty much is a straight shot between San Francisco and New Jersey. So I'm willing to guess about 3000 miles.
roughly 3000 miles
1800 miles
1,161 miles.
2191 miles
25.31 miles
26.23 miles
20.45 miles
188.81 miles
361.13 miles
350.64 miles
Approximately 750
It is 1,356.66 miles according to MapQuest.