Some good advice there. An ultra is all about moving forwards. Big tip -only the elite elites would probably run the entire distance! So walking, jogging, walking, jogging will help you get round. Walk all the up hills, run the flats and downs; and you will be suprised how far you can actually go!
Hydration packs are the order of the day, so to will be nutrition.
I live in the countryside and it is dark before work in the morning and dark in the evening after work. There are no streetlights out here, the roads are single track. I daren't go out running in case I twist my ankle or a car doesn't see me due to all the running manufacturers failing to put adequate and correctly located reflective (not neon hi viz) bits on the black camaflauge leggins and tops.