Wuss. I rode my bike to work every day this winter, and even though it didn't get down to -27, it did get down below -15 for two weeks, and down to -20 on a couple of days. I only have 4 km to work, but riding downhill in -20 C really chills your face. 
Hey, I'm not crazy - below about -18C, I use a full-face neoprene mask (the only thing left exposed are my eyes). at -27C with a 30km/hr wind, you'd get frostbite in seconds - and I don't want my nose to fall off just yet!
I'm not going on no 210 km bicycle race, ever, but I decided yesterday to start working up for the 60 km trip to my grandma, and at the same time see if there was a route straight over the hill and through the forest (cutting 10 km off that 60) I was going to turn back after an hour, but I hadn't determined if the route existed. I ended up following that route, and going back the long way to avoid going back up the really steep hills at the end. I came home after 5 hours and 70 km and was totally exhausted. I'm not trying the trip to grandma until I've had a couple of more reasonable test runs. And on those I'm bringing more drink and something to eat!
I've ridden 250km so far this week (since Monday morning), but I did work up to that - around March I was only riding 20km/day. And yes, on longer rides it is very important to eat and especially drink - performance plummets if you get dehydrated.
Oh, and those rollers scare me. "Fall" off at top speed and you crash straight into a wall, or worse if you've put it somewhere stupid.
I've fallen off of rollers before - it's really not that bad. The angular momentum stored in the wheels isn't enough to catapult you forward much! I fell off on carpet, and the tires just burned a couple of patches where they skidded to a stop. It's best to put them beside a wall or somewhere you have something beside you to hang onto as you're getting up to speed.