241 mi - about 4 hours 13 mins .
Surrey, UK to Tenby, Dyfed, UK 1. Head south toward A246/Epsom Rd 495 ft 2. Turn left at A246/Epsom Rd 0.3 mi 3. At the roundabout, take t…he 1st exit onto The St 0.2 mi 4. Slight left to stay on The St 331 ft 5. Take the 1st left onto Ripley Ln 2.2 mi 6. Continue on Rose Ln 0.9 mi 7. Slight left at High St 23 ft 8. Take the 1st right onto B2215/High St Continue to follow B2215 0.7 mi 9. At the roundabout, take the 1st exit onto the A3 ramp 0.3 mi 10. Merge onto A3 1.1 mi 11. At junction 10, exit toward Leatherhead/M25/Chertsey 0.2 mi 12. At the roundabout, take the 1st exit onto the M25 ramp to M40/M3/M4/Chertsey/Heathrow 0.3 mi 13. Merge onto M25 13.4 mi 14. At junction 15, exit onto M4 toward Slough/Reading Partial toll road Entering Wales 180 mi 15. At the roundabout, take the 3rd exit onto A48 heading to Cross Hands/Caerfyrddin/Carmarthen Go through 1 roundabout 14.8 mi 16. At the roundabout, take the 2nd exit onto A40 heading to St Clears/Fishguard/SanclÃªr/Johnstown/Abergwaun Go through 1 roundabout 9.1 mi 17. At the roundabout, take the 1st exit onto A477 heading to A478/Dinbych-y-pysgod/Doc Penfro/Tenby/Pembroke Dock 12.1 mi 18. At the roundabout, take the 1st exit onto A478 heading to Tenby/B4316/Saundersfoot Go through 1 roundabout 4.3 mi 19. Slight left at A478/Narberth Rd Continue to follow A478 0.7 mi 20. Turn right at A4139/White Lion St 322 ft Tenby, Dyfed, UK ( Full Answer )