p1b, the standard student trip out west is pretty awesome. 259, 239 (those two numbers may be flipped), 299, 1266 (twice), then 222 to vegas or 259/239 back to phoenix. Either 239 or 259 starts west of el paso and leads towards phoenix and the other starts NW of Phoenix and does a loop around it in the mountains. That was a great route with lots of ridges and canyons. 299 flies right down the colorado river but is otherwise flat. Regas in yuma or el centro then hit the 1266. Gas up again then fly either to vegas or back to phoenix for another night of partying.