When I just started out riding, I was doing a 13 mile (26 mile) commute to post. On my mountain bike that was taking about an hour, to an hour and 15. Nowadays - many, many years later: I'd say I could push out a 25 mile one way in an hour and a half. Depending on the ride home, I could still find an excuse to add another 15 and still keep it easily under 3 hours

SO I went with whatever it takes, but I think my maximum daily range I would consider is about 50 miles away.