To avoid certain death it's advisable you prepare yourself for the cold by having some kind of idea about what you're going to wear.
There are two main ways to approach this element of your preparation:
METHOD 1: Go to your local shops or online to buy some very expensive high-tech kit.
"If I was doing it again, I would buy damn good boots and mittens online before I left and would have been much more comfortable. What it comes down to is that it's really hard to buy good equipment in a country where you don't speak the language, and where you have only a few hours to get gear between events on the launch weekend."
- Pat Coleman, 2013 Ice Runner
METHOD 2: Buy everything in Russia.
Funnily enough, people tend to be pretty kitted out for the cold in Siberia, so warm clothes are easy to come by.
"I favour buying everything in Russia. I bought local felt boots for £15 and a full warm outerlayer (trousers and jacket) for £80. I had a couple of thermals under this but that was me sorted for £100." I had to keep chucking hand warmers around my toes but that was no great problem and I had to do that on expensive fancy boots anyway. But then I am a massive cheapskate."
-Mr Tom, Adventurists founder
Seal yourself in
Make sure there are no pesky little gaps in your clothing that'll let in the cold and cause your icy demise. Duct tape is your friend.
We don't really need to tell you this, but you need to wear a hat and helmet
There are pros and cons of both open faced and full faced helmets. Full faced helmets can be annoying and fog up loads, but if you're fancy enough you can get some with heated visors. Alternatively, you could opt for an open faced helmet, with a pair of good skiing goggles.
You'll want to protect your beautiful face from the harsh environment. You need to think about your breath as this will freeze over your goggles if it is not directed downwards. The best thing we've tried is neoprene face mask for motorcross.
Glasses are very difficult to keep from freezing over so the visually impaired among you may want to opt for contacts.
Layering is key, as with everything else.
With socks, wool is king. Also, make sure you can get all the socks you will be wearing comfortably inside your boots, with plenty of wiggle room. Cramped feet will cost you your toes.
Rubber soles will need to be very thick, eventually they will let the cold in, but the thicker the soles, the longer you can stave off the cold. Felt liners seem to be the best insulator on the market, so whether you end up going local, or bringing your own, you'll likely be wearing clunky rubber soled boots with one or even several felt liners.
Sorel and Baffin make decent boots, some rated down to -90, but these ratings are wildly unreliable, everyone really is different. The -90 rated ones can be really bulky, which could make actually riding the bike more of a challenge.
Body & Legs
The best approach seems to be one super thick warm layer with several under layers for bonus warmth.
A couple of people in 2012 tried using the clothes they used for skiing but they were not really good enough, skiers are moving and generating heat, you will be still and losing it.