I pretty much just train inside with trainerroad and the plans max out at 2hr workouts. Would love to do more long rides, but I get a lot of bang for my buck inside. Last weekend I did finally venture out and did 100 miles in under 5.5hrs, with only indoor workouts all year so I'm definitely not limited by the 2hr workouts. I just try and keep my riding reasonable and not potentially and take up time from family activities we might choose to do on weekends (although if I got up early enough I could do long rides and be home in time to go out)