i prefer no more than 300 miles per day but depends on where we are heading. most of our trips are 2 to 3 hour trips but last september we did an 8 day trip from home in north carolina to niagara falls for 3 days than back down to lancaster co. pa amish country for 3 days. spent 1 night going up to niagara falls in pa. and last night in virginia coming back home. longest stretch on one day was 9 hours from nc to pittsburgh area going north. we have a TT. on the 9 hour day my wife took a 3 hour shift driving.