Favourite? Hmmm, most memorable....aahhhh, Dorset coast 200 C.2004 . One of my first Audax, but didn’t have route sheet plastic waterproof thing. Started off lovely on the race to ferry, got on with the first bunch, just, then twixt studland and Weymouth, the weather turned dramatically, route sheet had dissolved, got to checkpoint at Weymouth pub, and the rain was bouncing off the road about 4”. I was cold, shaking, no spare route sheet available, so set off again following others, got dropped, got lost, met up later with others, followed them back, but they were on the 100 km ride. Had dried up by now. Cracking day.