We will spend 4 days on the way to Yellowstone from LA:
1st -> LV
2nd -> Bryce NP
3rd -> Arches NP
4th -> arrive at Yellowstone.
5th -> Grand Teton
6th -> 13th -> inside Yellowstone.
1st -> LV
2nd -> Bryce NP
3rd -> Arches NP
4th -> arrive at Yellowstone.
5th -> Grand Teton
6th -> 13th -> inside Yellowstone.