The website lets us filter saved routes by distances up to 50 miles. I rarely ride less than 50 miles. I have many routes of 60, 70, 80, 90, and 100+ miles. The mileage filter needs to not stop at 50. I’d say go up to 150.
The cell phone app has no saved route filter at all. Add a distance filter for saved routes on the phone app. And of course make it go up to at least 150 miles in increments of 10 miles.