There are
3,179 mi
from San Leandro, CA to Somersworth, NH
That's the driving distance. It would take 2 days 8 hours to go from San Leandro, California to Somersworth, New Hampshire.
The flight distance (direct flight from San Leandro, CA to Somersworth, NH) is 2,679.50 mi.
3,179 mi = 4.83 kms