What an outstanding day for the century. We were in fog and 54F at the start and for about the first 40 miles, but no issues with sweating and heat. The rest of the ride was mostly sunny with just glorious weather ranging from mid-60's to mid-70's. The pace was fast. There was an initial group of ~15 people that went off at about 7:15am. We stayed together mostly until the first rest stop at Dunstable (19.2 mph average!). Then we broke up and occasionally reformed. But after the second Dunstable rest stop the core group I hung with was Ken, Bernhard, Terry, and his friend LB. We were well matched and kept up a very good pace. We averaged 18.9 mph for the whole enchilada: definitely the fastest ever. That felt like the fastest century I've done, given the average elevation gain (50 ft per mile). [Note: the power data is bogus as the Newton wind sensor appears to have been not working for the first 60 miles (due to fog and condensation?); only the last 40 miles appears to be correct.] It was probably the nicest day for a century I've ever ridden and with a group I love riding with. I felt tired but not shattered by the time I got home. Depleted but happy. Got the protein smoothie in me, now time for an adult recovery beverage purely for medicinal purposes.