The EWRC is https://travel.gc.ca/assistance/emergency-assistance
Oh, and here is the Canadians Abroad registration info: https://travel.gc.ca/travelling/registration
So far the info from the US government has been very accurate.
But maybe they didn't want out.
As of a few days ago, it was quite clear that Russia would invade Donetsk and Lugansk. It was not at all clear whether an invasion of Kiev would actually take place, or if it was a fairy tale, just like Saddam's WMDs.
Urgh, I hate this.
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.
Neither is a death sentence. You just have to weigh your risks.
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.