Two things...
1. What are the conditionslike in March? My group is planning on going from March 22-29. What temperatures should we expect?
2. Does anyone know the distance from Hut-High camp (the one below the glacier) and from High camp to the summit?

are you referring to the piedra grande hut or the high camp area at about the 16000 ft elevation? distance in elevation? climbing hours ?

I am referring to the distance from the Piedra Grande Hut to the High Camp just below the Jamapa Glacier. Any info you can give would be helpful. Distance, hours (average)... Thanks for your help.

About 2 miles/2,000 feet. It takes about 2 hours at an easy pace with a light pack. I would plan for 3 - 4 hours to take it slow with full packs.

I agree with dswink...2-3 hrs from piedra to camp below glacier ...I will be there..solo...last week of March