Trips and Streets had a function you could be in how many miles a day you wanted to drive from that is would break the trip into days. Does any one know a trip planner that has that function?
Another member offered this site - https://www.freemaptools.com/how-far-can-i-travel.htm It at least will give you a radius from a point of your choosing in miles - so if you want to travel 300 miles in a day, this will show you where that will get you, so you can start looking. ST