|Location Map ( geo)|
|From:||Finglas, Dublin (O12503789)|
|To:||Killester, Dublin (O19453713)|
|Distance:||6.9 km (4.3 miles)|
|Meets:||R102, N2, R108, N1, R107, R105|
The R103 runs from a junction with the R102 at Tolka Valley Road in Finglas, Dublin, to a junction with the R105 at Howth Road, Dublin, via Cardiffsbridge Road, Mellows Road, Seamus Ennis Road, Ballygall Road West, Glasnevin Avenue, Collins Avenue Extension, Collins Avenue West, Collins Avenue, and Collins Avenue East.