Tape up those feet.
Foot blisters are always a worry for climbers. Maybe they’re from an ill-fitting climbing shoe, or maybe your boots don’t fit well. Maybe you’re feet got wet when you were crossing a stream. Whatever the reason may be, they happen.
I found a great page online at abc-of-hiking.com that talks about the causes of blisters, blister prevention, early treatment of blisters, and healing blisters after you get home. Check the article out!
In my experience, the best way to prevent blisters is to 1) Wear thin, breathable socks, and 2) Make sure my shoes/boots fit well. What works well for you?