Google Earth calculates the distance as 167 miles - with an estimated driving time of 3 hours 17 minutes.
It depends whereabouts in Cornwall you mean. As an example - Google Earth calculates the driving time from Bournemouth to Penzance as 3 hours 49 minutes for a journey of 195 miles.
Manchester to Newquay, Cornwall is 324.5 miles and should take approx 5 hours 54 minutes according to AA route planner.
The driving distance is 57 miles. The time needed to drive is 1 hour and 8 minutes.
A lot.
36 days!!
Bournemouth is 107 miles SouthWest of London, approximately 2 hours drive.
about 2 hours!
Depends on which part of Cornwall but about 8 hours.
According the AA Route Planner (GB Edition) the distance is 362.8 miles, this will take about 6 hours and 24 minutes to drive, assuming you take the direct route and there are no stops, accidents, breakdowns or other hold ups en route.
If you are asking about the Cornwall in England, then you can't drive from there to Los Angeles, because of the ocean.
It takes about 5 hours and 35 minutes to drive to Yateley Hampshire to Cornwall.
About 2 hours - but it depends on traffic.