Track Run in Paris - Stade Emile Anthoine

Hello, I have previously used the Epix 2 and nowadays use the Forerunner 255. For both watches when I did a track in Stade Emile Anthoine in Paris it records 400meters per lap instead of 350 meters per lap. Whereas the normal length of a track in Paris (e.g. Stade Paul Faber) is of course 400 meters, Emile Anthoine near the Eiffel Tower is the odd one out at 350 meters. Naturally, this makes my run intervalls much faster than they actually are. I have also seen that the Garmin watch can not handle 200 meter tracks very well. Is there a chance to solve this issue and get the lap to 350 meters for the track run? I have tried to calibrate the laps quite a few times on both watches by initially recording it.