Great to see a supplement supporting play in a different environment from what we typically play in!
Including the real world far north endless night thing was such a great idea and fits perfectly with Shadowdark!
I liked all the stuff in Outdoor Travels but it left me wishing for a bit more mechanically, like rules for Frostbite would have been so cool. 
Nice mix of naturalistic and fantasy monsters for just a single page.
The Tether weapon tag opens up some cool options.

As someone who likes overland travel and natural hazards, this is *chef's kiss*.

My one criticism is on the blizzard weather condition. I would like it to be clearer if blizzards force the con check (or not) even if you are wearing a snowsuit. That was one part that felt subtle enough to miss, and would be worth highlighting.

Otherwise, this is a great supplement with a little bit of everything. It perfectly fits the mechanical load of shadowdark, and every part of this feels inspired. I was excited to read from one page to the next.

Fantastic work!

I like the weather tables with the effects you listed. Makes overland travel almost a monster to fight in it of itself!

I want a Giant Penguin Mount!

Perfect supplement for my Frostmire setting! Well done. I needed rules for cold weather.