Rain
Punctures
Going too hard at the start
Not losing time at controls
Running out of food
Running out of motivation (see also, "riding past stations")
The last hill of the ride
If you are doing intervals, hills, and long/slow solo winter rides, your fitness will be fine.
The hard bits of long audaxes are:
Rain
Punctures
Going too hard at the start
Not losing time at controls
Running out of food
Running out of motivation (see also, "riding past stations")
The last hill of the ride
If you are doing intervals, hills, and long/slow solo winter rides, your fitness will be fine.