There are
1,558 mi
from Lansdale, PA to Tomball, TX
That's the driving distance. It would take 1 day 5 hours to go from Lansdale, Pennsylvania to Tomball, Texas.
The flight distance (direct flight from Lansdale, PA to Tomball, TX) is 1,340.45 mi.
1,558 mi = 2,507.64 kms