 The most notable was in 1935 when he completed the 167-kilometre Taranaki Around-the-Mountain Road Race in 4 hours, 8 minutes, 38 seconds (average speed of 40 km/h).Watson was selected for the 1928 Tour de France on the strength of his performance in the Dunlop Grand Prix, which at the time was the biggest cycling race in the British Empire and the richest race in the world.The race was held in four stages around Victoria in November 1927, covering .