Driving directions from Portsmouth, United Kingdom to Carmarthen Castle, United Kingdom distance
Portsmouth, United Kingdom
Head east on Station Sq toward Commercial Rd
34 m
Exit the roundabout onto Stanhope Rd
0.2 km
At the roundabout, continue straight onto Unicorn Rd
0.2 km
Turn right onto Marketway/
Keep left to continue on Hope St
0.4 km
Keep left to continue toward Mile End Rd/
Turn left onto Mile End Rd/
Slight right onto M275 (signs for M27)
3.0 km
Keep left to stay on M275, follow signs for M27(West)/
Take the exit on the right onto M27 toward Southampton/
At junction 4, take the M3 exit to The Midlands/
Continue onto M3
14.5 km
At junction 9, exit toward The Midlands/
At the roundabout, take the 2nd exit onto Winchester By-Pass/
Keep left to continue on A34
44.8 km
Take the exit toward Chieveley
0.9 km
At the roundabout, take the 1st exit onto the M4 ramp to S Wales/
Merge onto M4
96.8 km
Keep right at the fork to stay on M4
17.7 km
Keep right to stay on M4
21.2 km
Keep right at the fork to stay on M4
88.7 km
At the roundabout, take the 2nd exit onto A48
6.0 km
At Cross Hands Roundabout, take the 3rd exit and stay on A48
17.7 km
At Pensarn Roundabout, take the 2nd exit onto A40
0.8 km
At the roundabout, take the 3rd exit onto A4242
Go through 2 roundabouts
Destination will be on the right
0.9 km
Carmarthen Castle, United Kingdom
Map data ©2023 Google
Portsmouth to Carmarthen Castle road map
Portsmouth to Carmarthen Castle flight distance miles / km
156.8 mi /
252.3 km
Portsmouth to Carmarthen Castle car distance km / miles
346.9 km /
215.5 miles
Portsmouth to Carmarthen Castle driving time
3 hours
39 minutes
Portsmouth to Carmarthen Castle average speed
95.0 km/h
Fuel consumption calculator
26.01 liters
Fuel price calculator
39.02 €
€/L