Another porridge fan here. I slice up a banana and add it and have recently taken to adding a small handful of raisens also. I probably wouldn't bother worrying about any kind of specific food the night before, for a 62 miler. Maybe if it was getting on for a ton.
Follow compos advice and stick to what your used to.
If you like Pasta then it is recognised as a good slow energy release food suitable for the day before. On the ride a mix of sweet stuff and savoury is good. too much sweet stuff seems to make me feel a bit weird after a while.
A few slices of pizza are nice potato is good energy food. Anything will do really but dont experiment onn a ride that is longer than normal for you.I like salted peanuts but take care if eating while riding, I have heard of people choking on nuts.
Energy gels are great to give you a spurt of energy but despite the outlandish advertising claims I find they wear off very quickly .
pasta based meal the night before , then porridge with sulatanas for brekkie .
Couple of bidons dependant on weather and how hard your cycling, a cake stop for coffee + cake if its a social ride .For a 50 miler solo i would probably take an energy bar or 2 as well depending on how hard i am pushing it.
Cash just in case you have to pop into a shop for cola + choccie boost !