Complex sentence: He participated in the 1903 Tour de France, the first Tour, and came 12th, 19 hours, 9 minutes and 2 seconds behind the winner Maurice Garin.
Split into simpler sentences: He participated in the 1903 Tour de France, the first Tour, and came in 12th place. He was 19 hours, 9 minutes and 2 seconds behind the winner Maurice Garin.