Time
Some will be looking to record a fast one, others for full value.
Keep an eye on it – especially at controls which can eat it up.
Know how much of it you’ve got.
Try and get some in hand just in case. Build up enough of it and you can get some sleep.
Tyres:
Check yours before you go and fit new ones if there worn. Consider carrying a spare or a “boot” for emergencies.
Tie wraps:
Can fix everything from your carradice to your freewheel. Carry a few.
Tiredness
Gets us all. If you start to get “the noddies”, consider 15-20 minutes catnap at the side of the road.