1. By Road (Driving Distance):
- Via the M4 Motorway: Approximately 200 miles (322 kilometers).
2. By Train:
- Direct Train (Great Western Railway): Approximately 165 miles (266 kilometers).
3. By Air (Flight Distance):
- Direct Flight (London Heathrow to Cardiff Airport): Approximately 120 miles (193 kilometers) as the crow flies.
It's important to note that these distances are approximate and can vary based on factors such as traffic conditions, train schedules, and flight routes.