Would you consider San Antonio the edge of west Texas ?

Wikipedia says it is roughly west of a line drawn from Wichita Falls, to Abilene, to Del Rio. San Antonio is well east of that.

Texas is 878 mls long fron El Paso to Orange,San Antonio is about 40 mls long from Leon Springs to Converse, ends at m.m. 575 I d divide in three parts,the west ends at about mm 293,central Tx starts there and ends 293 miles later,East Tx starts at m.m. 586 and ends at m.m. 879/ or the end of Tx in Orange.

So No,San Antonio is way past the end of west Texas' edge.

Look at a map. You'll find that San Antonio is roughly in the middle of Texas.

West Texas has it's own characteristics.  The big one is that it is dry and lacks enough water for the oak trees you see further East.  There's a pretty defined line of where this is.  San Antonio is far to the East of that.  

https://www.texasstandard.org/stories/we-wanna-kno...

“It starts just east of Wichita Falls, then down to the outskirts of Abilene and San Angelo, then bulging a little further west as you move south,” Marks says of the line of oaks. “So places like Junction, Brownwood and Graham are out. Sonora is teetering right at the edge.”

No that's El Paso.

No, EL PASO is the west.

No, "El Paso"...

No. El Paso is as west as one can go in TX