How should Nordic boots fit compared to alpine boots?

Nordic boots should fit more like a well-fitting hiking shoe than an alpine boot. You need enough toe room to wiggle your toes for circulation (about a finger's width at the front), but the heel must be locked down to prevent lift during the kick phase. The midfoot should be snug but not constricting. Unlike alpine boots, which are often downsized aggressively for performance, Nordic boots are typically sized closer to your street shoe size. Prioritize heel hold and circulation—cold, numb feet will end your ski day faster than any performance shortcoming.