I'm in decent shape (probably top 10% of the population) and I did 114 km this summer in great weather on an old mountainbike with a slick rear tire on gravel roads. It took me about about 5½ hours effective riding time.
To go out biking winter-time 100+ km, in freezing temps or slightly above that, with high humidity and possibly rain/sleet/snow you better be well prepared. Especially if you don't know where you will end up and if that place will have water / heat / electricity.
Doesn't seem so :/ Personally I think their best bet is to wait and see how the situation evolves in the short term. Russia does not seem to want to hurt citizens. At least, not yet...
Quite. Russia is now a pariah, until Putin is gone they will not be able to live this down. I'm really disappointed that Italy and Germany block kicking them off Swift, that should have been the first response.