Powder snow on top of hard packed snow is really slippery. Not ‘fall and break something’ slippery, but still. It’s really hard to keep a decent pace. 8k took 52 minutes.
I also think I found at least one reason why my shins ached: When I run on slippery surfaces my feet sort of slip backwards at toe-off. If I try to compensate for that by lifting the foot off more flat (don’t ask me why I do that) I somehow tense the muscles on my shins. Funny how weird little habits sneak in.
Anyway today it’s raining, so the fairytale is over for now.