Thranes, horses and owls! Oh my! (Grefe)
I'm assuming that the squares on the map are 5' x 5' ("Whenever possible, use units of 5 feet for movement and position." -PH, p.130). Grefe's normal move is 30', in the snow it is 20'.
Empty handed, Grefe heads north at a flat-out run (20'x4=80', 80'/5'=16 squares), turning west at the north edge of the ridge. He crests the ridge (end Surprise round at Grid A51) and plows down the western slope (end of Round 1 at A35).
No breathing means no panting. I'll have to remember that. I won't even be out of breathe to cast my spells.
I wonder how long I can run at this pace? Still no view of the Cardinal. At this rate I will be able to hit him with my spittle by the time I am able to see inside his shelter.
Damn! I forgot to cast Resistance on myself. Fool and idiot! You are dead, not invulnerable. You may no longer need to breathe, but take a breathe before charging into battle. Even if you are following others.
Assuming that he keeps moving west, at which square will Grefe have a line of site on the cardinal?
When he gets there will Grefe need to succeed at a Spot skill check to see the cardinal in his shelter?