They are 8273 km away. The estimated time of travel is 11 hours by flight.
Traveling I-35 North will take you from Laredo, Texas to Duluth, Minnesota, while traveling I-35 South will take you from Duluth, Minnesota to Laredo, Texas.
23 hours.
Mapquest says about 6.5 hours (about 422 miles).
20 and 1/2 hours
About 3 to 3.5 hours through Monterrey if you take the toll road.
From Laredo, Texas to Mexico it would take less than 1 minute.
6 quarts.
A direct flight from London, England to Amarillo, Texas will take about 10 hours.
It depends if you are driving from London, Arkansas, London, Ohio, London, Texas, or London, West Virginia! (the question does not specify it)!
MapQuest estimates the driving time as 15 hours and 22 minutes.
Google Maps estimates the driving time as 22 hours and 29 minutes.
The distance between downtown Austin to downtown Laredo is 236 miles which if you drive it will take 3 hours 37 minutes if there isn't a lot of traffic in I-35 especially in San Antonio.