Bus -- 1st Class Primera Plus gets to Pinal from Queretaro in 2.5 hrs. There are also both Primera Plus buses from Mexico (that go via San Juan del Rio and bypass Queretaro) and 2nd class buses (Flecha Blanco, if I am not mistaken) from Queretaro that take longer.
Peter826 - given you interest in colonial architecture and churches, I am sure you'll be delighted to visit Mision Bucareli that is very different in style and setting (and time of construction) from the famous Franciscan missions of the region (Jalpan, Landa, Conca...) You can get a taxi or collectivo from Pinal to take you there. The ride is long and bumby but totally worth it.
Hikes - in February, we did a hike form the Mirrador 4 Pallos to Mission Bucarreli. It is a 6000 ft descend from cloud forest (we could not see a thing and it was rather coldish and moistly at the Mirrador) to semi-desert (things got clear, beautiful, and progressively warm/hot starting about 30 min into our 5 hrs hike) - over the distance of about 7 miles. We hired a local adventure company in Jalpan to bring us to the mirrador and to guide us to Bucareli. Instead of hiking back, the adventure company brought a van (we were 8 people) to Bucareli so after a late lunch they took us back on a van (so yes, we cheated.) The ride was rather long but, at places, quite spectacular.
Experienced hikers/trekkers perhaps can do w/o a guide - an AllTrails app on my iPhone had the hike mapped and we basically did not deviate from the route that the app outlined during our hike with the guide. Then again, I felt a bit more secure in this super gorgeous but remote and deserted area being accompanied by a local.
There is also a super easy hike (rather, a walk) to Puente del Dios/ Rio Escanella a bit east from Pinal, that is very beautiful and pleasant. As we discussed about a year ago here on the forum, this place should only be visited during the dry season (late Nov/Dec - Feb) b/c the path is flooded in the wet season (there is an alternative - high - road - but it is absolutely not the same.)
Taxis - yes, there are taxis to take you everywhere in Pinal - but I failed to ask the prices. I will go there again in 2019 and will try to remember to do so :)
Cheers,
/alter