This is kind of an obsessive thing to do. Here are driving directions and a map from Childress, TX to Riverton, WY. I sooo would've done it, too. There probably wasn't even a good set of interstate highways back then, so imagine the time it took. There had to be so much more than "a couple of high-altitude f#cks."
1. Starting in CHILDRESS, TX on AVENUE F[US-287] go toward 2ND ST NE - go 2.0 mi
2. Continue to follow US-287 - go 104.9 mi
3. Take Left ramp onto I-40 WEST toward DUMAS/AMARILLO - go 7.8 mi
4. Take exit #70 onto US-87 NORTH toward DUMAS - go 2.4 mi
5. Take ramp onto US-87 NORTH toward DUMAS - go 211.7 mi
6. US-87 NORTH becomes CLAYTON RD - go 0.5 mi
7. Turn Right onto I-25 NORTH - go 316.7 mi
8. Take exit #8B onto I-80 WEST toward LARAMIE - go 143.4 mi
9. Take exit #215/I-80-BL BUSINESS/US-287 NORTH onto I-80-BL WEST toward RAWLINS - go 1.1 mi
10. Turn Right on N HIGLEY BLVD[US-287-BYP] - go 1.5 mi
11. Continue to follow US-287-BYP - go 0.1 mi
12. Turn Right on US-287 - go 84.3 mi
13. Turn Right on SAND DRAW RD - go 36.1 mi
14. SAND DRAW RD becomes GAS HILLS RD[WY-136] - go 0.2 mi
15. Turn Right on WY-789 - go 1.3 mi
16. Continue on N FEDERAL BLVD - go 0.1 mi
17. Turn Right on E FREMONT AVE - go 0.1 mi
18. Arrive at the center of RIVERTON, WY