From Paddington Station in West London to Truro (the administrative centre of Cornwall) the fastest trains take about 4 hours and 20 minutes to cover the 400 km (249 mile) journey.
A car journey from West London to Truro would take about 4 hours and 30 minutes using the A4, M4, M25, M3, A303, A30, M5, A30, and A39 roads (420 km; 261 miles).
About 6 hours
The distance from London, England to Cornwall, England is 269 miles and takes approximately 4 hours and 45 minutes.
About 4 hours and 54 minutes.
4 and 1/2 to 5 hours
6 and 1/2 to 7 hours
About 40 minutes direct or 1hr 20min if they touch-down at Plymouth
In the twinkling of an eye. Less than a second. If you in the right part of England. England is a country, and Cornwall is a county in England. So if you are in Cornwall, then you are also in England.
Cornwall to London Paddington: 4-6 hours, depending on where in Cornwall you are starting from. London Paddington to London St. Pancras: about 30-45 minutes by tube. Add extra time if you have not done this before and do not know the way. At London Paddington: 30 minutes check-in time for the Eurostar. London Paddington to Paris Gare du Nord: 2¼ hours. Total: 7½ to 9½ hours.
The driving distance from London, United Kingdom to Cornwall, United Kingdom is 142.8 miles. The driving time is 2 hours 25 minutes when you take M1, A1(M), and A59.
It takes about 7 hours
5 hours
London/Penzance 255 miles