Freezing cold 🥶 and headwind for 46 miles.
First 20 miles are always brutal, everything hurts and lungs feel like they're burning, then settles down and as long as ai don't stop I can manage, stopping for longer than a few mins, resets the clock back to zero 🤦‍♀️
Never ridden route before,  was a mixture of roads, cyclepaths, gravel,  bridleways and through Cambridge city centre (not best choice of route) on 42mm gravel tyres.