Your first run does not need to reach a landmark or fill a full hour. Around Fontainebleau, it might be a short loop on quiet streets or an easy stretch of level path, with enough breath left to talk. The goal is to finish feeling that you could do it again.
Make the effort repeatable
Begin with a brisk walk, then alternate relaxed running with walking before you feel spent. Keep the running sections conversational: if you can only get out a few words at a time, slow down or walk until your breathing settles. There is no prize for making the first session the hardest one.
Choose a route where stopping is simple, such as a familiar neighborhood loop rather than a long out-and-back. That matters when legs feel heavy or the weather shifts. Wear comfortable running shoes you already know fit, and pick a surface that feels predictable underfoot.
Build around ordinary life
Leave a rest day between early runs when you can. Easy walking is fine, but treat persistent or worsening pain as a reason to stop and reassess rather than something to run through. Sleep, work, and family plans are part of the training picture; a plan that ignores them rarely lasts.
Repeat a comfortable run-walk session before making it longer or adding more running. Change one thing at a time, and notice how you feel later that day and the next morning. A steady habit is a better starting line than a fast first week.