next wednesday, I will arrive by train (8.30am) in St Charles
I have to go to bd peytral, next to Prefecture
I saw there is the metro possible (line M1 in about 7 min), 1.5 euro
could you tell me how many minutes I will need if I do it by walk (from st charles to prefecture) ?
I have no luggages, walk normally or a little bit fast
20 min ?