Completed the San Francisco Marathon in 3:54 h. Very nice Marathon, with a nice cool San Francisco weather, very good 1st half marathon and slower second half. We booked a hotel in SF, so after the pickup at the expo on Saturday afternoon, we had a walk at Fisherman wharf and after a dinner at North beach at an Italian restaurant. Race day, in the morning, Raimondo with Yajun and I went to the start at 4:45AM. After the usual procedures, we started at 5:32AM the marathon. We followed the pace group 3:40, it was at a decent pace, sometimes faster than what I could keep up, but we managed to stay at sight until the 1st half. It was done in 1:50 h at 8:15 pace as hoped at the beginning. Second half, I felt the tiredness, so I slowed down a bit. The course goes through the GG park until mile 19. I switched the speed to 9-9:10. Starting from mile 23 I felt some cramps so I had to change the speed again, in addition I started to be tired, so I concluded at 3:54. Very strange that the GPS shows 26.61 miles. Even 2 years ago I had the same problem. I may have finished at 3:50 based on the GPS values.