Option 1: Train via London Paddington and Plymouth
- Take the Heathrow Express train from Heathrow Airport to London Paddington (15-25 minutes).
- At London Paddington, change to a train to Plymouth (3 hours).
- At Plymouth, change to a train to Truro (2 hours).
- Total journey time: approximately 5-6 hours.
Option 2: Train via London Waterloo and Exeter St Davids
- Take the Heathrow Connect train from Heathrow Airport to London Paddington (30-35 minutes).
- At London Paddington, change to a train to London Waterloo (15-20 minutes).
- At London Waterloo, change to a train to Exeter St Davids (2 hours).
- At Exeter St Davids, change to a train to Truro (1 hour).
- Total journey time: approximately 4-5 hours.
Option 3: Train via Bristol
- Take the Heathrow Express train from Heathrow Airport to London Paddington (15-25 minutes).
- At London Paddington, change to a train to Bristol Temple Meads (1 hour 30 minutes).
- At Bristol Temple Meads, change to a train to Truro (1 hour 30 minutes).
- Total journey time: approximately 3-4 hours.
Option 4: National Express Coach
- Take the National Express coach from Heathrow Airport to Plymouth Coach Station (4 hours 30 minutes).
- Change to a First Kernow coach to Truro (1 hour 30 minutes).
- Total journey time: approximately 6-7 hours.
It's worth noting that journey times can vary depending on the specific train or coach services you choose, as well as the time of day and day of the week. I recommend checking the National Rail and National Express websites for the latest schedules and prices.