Krissy Moehl, who recently suffered vision problems due to cold weather while racing the Hellgate 100k trail run, has offered up some great advice for racing in cold weather. Everything she mentions is pretty spot on advice for dealing with activities in the cold in general, and it’s well worth a read if you’re not use to training or competing in the cold.
While I’ve never had vision problems due to the cold, I have experienced some of the other issues she mentions. I’ve had the bite valve on my hydration pack freeze up on several occasions, and any device that requires batteries will have a greatly shortened lifespan in the cold. Krissy ends the article with some nice suggestions on gear for dealing with the cold weather as well.