Torreon to San Miguel de Allende

Thanks for all the info..great forum as usual les

We took the bypass around SLP from the west a few years ago and because we came under the heavy truck category(dually and trailer) had to take the northern route. Between the truck traffic and trains it was a miserable hour+. The signs specifically directed us to take the north route rather than the much shorter southern route. I have no idea if you can take the southern route. We said never again.

Watch the transitos in Zacatecas too. Last time there one stopped us for speeding - I refused his vague hints to offer money - finally he told me to follow him to the station - however he stayed behind us and got off at the next exit, leaving us feeling like we were on the run.
I'll have to go back some day soon.

We haven't taken either route in years but in the past the periferico "around" Aguascalientes has always been very busy and in terrible shape. Last trip was probably 6 years ago so . . ?

Also in the past, the bypass around Zacatecas was pretty good.

Zacatecas is a beautiful city, worth a visit. The Hotel Hacienda del Bosque has reasonable RV parking usually, you'll need at least 1 1/2 spaces if you want to open the door on a class A! Some sites even have 50 Amps!. DON'T park under the trees on the highway side (Birds!), park backed up to the building.

for the past 4 years we have crossed further east and go via Saltillo. The periferico around (again almost through) Saltillo is busy but in good shape and traffic usually moves well. The highway south of Saltillo all the way to Queretaro is in good shape.

The the highway from just north of Queretaro to SMA is also in good shape. New busy interchange, watch the signs closely.

In previous years the Zacatecas bypass was also in good shape.

Watch for the transitos in Torreon!

I would NOT take anything bigger than a van to SMA via Guanajuato, and certainly not THROUGH Guanajuato. :E Low and narrow tunnels and streets.

Guanajuato too is worth a visit. Bugamville RV park is the only option for a big rig there.

Don't know which is faster but Streets and Trips says 478 miles through SLP and 470 miles through Aguascalientes - we got a bit lost going around SLP from Zac one time trying to connect to 57D - have not gone the Aguascalientes route - looks like more big roads going the SLP route. I would say flip a coin.