There are
3,101 mi
from Redwood City, CA to Concord, NH
That's the driving distance. It would take 2 days 8 hours to go from Redwood City, California to Concord, New Hampshire.
The flight distance (direct flight from Redwood City, CA to Concord, NH) is 2,657.68 mi.
3,101 mi = 4,991.13 kms