How far can you travel in a day?
Typically, a party can walk around 10 leagues per day. A league is defined as “the distance one can walk in an hour”, so if you walk 10 leagues, you spent 10 hours walking. You probably stopped for a break a couple times.
A league is around 5 km or 3 miles.
1 day's travel = 10 leagues = 50 km = 30 miles