Clothing – Socks (NEW!)
No matter what socks you go for, make sure you test as much as possible. While moving and in “normal” temperatures a warm running sock (no examples above) may be all you need. When it gets really cold or when you stop moving you will likely need more warmth.
Waterproof SealSkinz or DexShell socks are not a must but these sure have worked well for a lot of participants. If you get some, test as much as you can. The fit is good but not comparable to that of a regular sports sock. So, you may want to wear running or liner socks underneath. In any case it’s a thick layer and may influence your choice of shoe size.
Other options / Things to consider
Waterproof are not a must but these sure have worked well for a lot of participants. If you get some, test as much as you can. The fit is good but not comparable to that of a regular sports sock. So, you may want to wear running or liner socks underneath.
Thick socks may influence your choice of shoe size. Keep in mind that – as is typical in ultras – your feet will be swell up over time.
If you use compression socks during recovery time and it works well for you, these can be part of your kit in the Yukon, too.
Some people like to use Vapor Barrier Liner socks – RAB and Exped make these. Obviously, this will result in soaken wet feet. That in turn can cause trench foot and/or bad blister resulting in a DNF. So, if you are using VBL socks, make sure you keep an eye on it.
In (extremely) cold conditions it’s not only important to keep your feet warm but also dry. This may mean more frequent sock changes than you would normally do. If you wear thick socks, your feet are wet and the temperature drops, you can easily get frostbite on your toes.
No matter what you do, in an ultra it’s still possible to get blisters. Apart from having the best possible combination of sock(s) and shoes, you need to constantly monitor yourself. If you feel a hot spot may be developping, do stop and deal with it. Don’t wait until you reach a checkpoint.
I am not mentioning socks for fatbikers and those of you going on skis. I am simply not an expert here. Some socks will be great for all three disciplines but there may also be some ski and bike specific socks that I am not aware of. I would think that VBL may also make more sense or be easier to use for fatbikers. For both, skiers and fatbikers, keeping their feet warm is more challenging than it is for those on foot. I recommend asking other athletes with experience to hear what strategies they have developped when it comes to socks and ways to keep their feet warm.
Saving weight
As is the case with gloves or hats, there is not hugh potential for weight saving here. But obviously, you can make good use of your drop bag when it comes to socks. No need to carry all socks with you all the time.
Also, keep an eye on the weather forecast when you plan the amount and type of socks you will take with you until you have access to your drop bag again.