December 18, 2012 Arrowhead 135 This has been in my head lately. The Arrowhead 135. Fatbike racing. In the cold. Scratch that. It’s in the c-c-c-c-c-cold. Doesn’t seem like a good idea, so is that why I’m attracted to it? Related Posts Fatbikes and Baja! Fatbiking the Sierras!