Had the uncanny experience of cycling to my father's yesterday, and back this evening, which is a ride of 49.9 miles each way and on both occasions it took me 2h 40 minutes! Give or take around 20 seconds it was the same time. Clevedon to Parrett Works, Martock and back again.
God bless both half-term and Nuun tablets, which I'd previously only used before I left - 1 x tablet in 500ml of water. Well, I put another 'un in the old water bottle and I reckon it works better than any gel/sports drink powder I've used to date.