Austin, TX to Grand Teton NP

Take US183 north to Abilene and then I20 west to US84 to Lubbock I27 to Amarillo US287 to Dumas US87 on to Raton, NM and I25. Time your drive through Denver to avoid rush hour although it's busy anytime during the day. At Ft. Collins take US287 to Laramie. I80 to Rawlins and US287 and US26 to Grand Teton NP. From there take US89 to the south entrance of Yellowstone. I've driven all this route except for the part out of Austin to Abilene and they're all good roads(at least they were when we were on them). This route is 200 miles shorter than going up I35 and trust me it's worth coming over Togwotee Pass and seeing the Tetons as you descend. Fishing Bridge would be a great basecamp; I'd check on getting reservations now for next year. Any questions just PM me. One more thing if your GPS wants you to take US385 to Dalhart don't do it. You'll shake your rig apart. PM if you like for more information.