You can be a superhero! Do it! I don't think the rules say you have to even do it FAST! Just go out there and roll around for your first one. I must admit during the 24hour last week I thought I would like to do a solo sometime soon.

I figure that you build up your time in the saddle to get used to being on the bike for a long time, do some hard sessions of shorter duration as well, work out what you need to eat, and then just get out there and do it.

I'm most intrigued by a ruling that says you need to ride "continuously" for any period to qualify? Never seen that in any races I've done. All the solo riders I see stop off at their shelter for a quick bike lube/wash, snack, change of clothes or whatever... Some even stop for a half hour now and again for a real meal or a short kip in the longer ones. The only difference is where they place if they stay off the track more!

Maybe you can stop for a short break out on the trail somewhere now and again for a moment of "scenery appreciation and stretching?"

DO IT!