M4 Junction 30: Pentwyn (A4232)
Junction 30 at Pentwyn, also known as Cardiff Gate, links the M4 to the A4232 Eastern Avenue into Cardiff. Cardiff Gate Services is at the junction. Pontprennau and Pentwyn are beside it. Pentwyn Retail Park is about a mile and a half south.
North and east Cardiff, drivers stopping at the services, and patients and visitors heading for Spire Cardiff Hospital all use this junction. The map shows what is close by.
The M4 in England: live M4 speed flow map · latest M4 traffic news (Junctions 1 to 23)
M4 Junction 30: Live Traffic Information
This junction is on the M4 in Wales. National Highways’ live data, which our news, speed strip and records use, covers the M4 in England up to Junction 23. In Wales the motorway is run for the Welsh Government by Traffic Wales, so this page does not yet show live accidents, incidents, roadworks or speeds for this junction. We are working on adding them. Until then, check Traffic Wales before you travel.
- Junction M4 J30, Pentwyn
- Roads at this junction A4232
- Nearest town Caerphilly, 4.5 miles north-west
- Junction before J29, Castleton, about 3.0 miles in a straight line
- Junction after J32, Coryton, about 4.9 miles in a straight line
Around M4 Junction 30: Pentwyn: Towns and Places on the Map
| Place | What it is | From the junction |
|---|---|---|
| Spire Cardiff Hospital | Hospital | About 1 mile south-west |
| Pentwyn Retail Park | Shopping | About 1.5 miles south |
| National Indoor Athletics Centre | Venue | About 2.5 miles south-west |
| Plas Machen | Historic house or castle | About 3 miles north |
| Birchwood House | Venue | About 3 miles south-west |
| All Nations Centre | Venue | About 3.5 miles south-west |
| Walnut Tree Farm Park | Attraction | About 4.5 miles east |
| Tredegar House | Attraction | About 4.5 miles east |
