|Location Map ( geo)|
|From:||Robb's Bridge (W549956)|
|To:||Clyda Bridge Lower (W540974)|
|Distance:||2.3 km (1.4 miles)|
|Meets:||N20, R620, R619|
The R638 is a short road in north central County Cork connecting the N20 at Robb's Bridge to the R619 at Clyda Bridge Lower by way of Gooldshill and serving the Majestic Business Park and Quartertown Industrial Estate, south and south-west of Mallow.