It sounds like a lot to me too-
My goal is about 80-100 miles a week, and that is definitely possible in Arizona year round. As long as my schedule isn't too hectic, I can do that. Most weeks I get in one 20 mile commute on Fridays, plus weekends and an afternoon or two.

My husband commutes 5 days, 20 miles round trip and then adds on extra miles to get 150 or more. But his work starts later and dress is more casual -plus he's a guy and doesn't have to fix his hair etc.