Complex sentence: Marcham village is on the A415 road, which runs east--west through the parish linking Abingdon to the east via Marcham interchange on the A34 road with Kingston Bagpuize on the A420 road to the west.
Split into simpler sentences: Marcham village is on the A415 road, which runs east--west through the parish. The A415 links Abingdon and 34 Marcham interchange to the east with Kingston Bagpuize on the A420 road to the west.