Flat tarmac, GP5000s, no wind or a tail breeze and it feels like you can go forever. I love grabbing a wheel and switching in with someone of a similar pace. The combined effort boost you both so much. As you say, the sound a nice pair of wheels makes is unbeatable.

You weekly distance is excellent. Work and life get in the way of me exceeding 300 regularly, I sit at 250ish.