Western Sichuan (Chuanxi — the western half of Sichuan province) is where the Sichuan basin ends and the plateau begins. In practice that means one thing for a traveller: within a single long day of driving from Chengdu you go from 500 metres and tea houses to grassland at 3,700 metres with yaks in the road.
It's the most varied high country I know. Two valleys can look nothing alike, and a two-hour drive can put you in a completely different weather system. That variety is why this region gets the most guides on this site.
Bases on these routes
I plan in bases rather than days — each one is somewhere you sleep, and each has a different job on the route. These are the bases the guides here are built around:
Tagong
Grassland and monastery country, and the first high night on most routes west.
Zhonglu, Danba
Valley village of stone houses and old watchtowers, north of the plateau road.
Siguniang area
The alpine end of the region — two valleys under the Four Sisters peaks.
Xinduqiao
The crossroads town east of Tagong, where the main roads meet.
Litang & the road south
High plateau town, and the long drive south toward Daocheng Yading.
Guides for this region
Written one place at a time, after I've driven it again.