It began on 22 March at Suzuka and ended on 19 October at Motegi .
The 2003 All - Japan Formula Three Championship was the 25th edition of the All - Japan Formula Three Championship .
All - Japan Formula Three Championship began on 22 March at Suzuka and ended on 19 October at Motegi .
The 2003 All - Japan Formula Three Championship was the 25th edition of the All - Japan Formula Three Championship .