I’m not sure if you want results for this morning’s run, but I ran 42.2 km in 3:40.
My GPS has the course at 53.7 km. Downloading the data into Motion Based software yields a corrected distance of 54.4 km. This was Gilles and my guess before today based on pacing from Jan. 1. If you zoom in on the attached map, it looks like the Garmin tracked well.