4 mile run with Merrel Vaporglove 3's. I tried out a pair of Yaktrax that I received as a Christmas gift and they worked well.Yaktrax are like chains that you attack to your shoes They allowed me to run on packed snow and ice with no worries. It was a beautiful day with fresh snow and filtered sunshine, temps in the 20's. Saw hundreds of seagulls huddled on the ice of Presque Isle bay.