Someoine mentioned being undergunned with regards to bears. This is true for ANY handgun, less so for a 44 mag, but this is still not enough gun. The only bears you need to really worry about are Grizzlies and Polar Bears. It doesn't sound like you'll encounter either where you are going. Black Bears will only cause a problem if you are perceived to be a threat to their cubs. Make noise as you walk and they will stay out of your way.
I do not carry a gun to protect myself from animals as they are more afraid of you and will stay out of your way. Except some Grizzlies. The Polar Bear will hunt YOU, so a 12 guage with 00 Buck is minimum in Alaska. On the trail its really two legged idiots you need protection from. A 9x18, 9MM (9x19), .40, .357 or .45 is fine unless you are tangling with Grizzlies or Polars.