Gareth Thomas made his début for Wales on 27 May 1995 against . He scored a Welsh record-equalling four tries in the match against in Treviso in 1999; one of only seven players to achieve that feat for Wales. He held the Wales record for the most international tries with 40 until Shane Williams surpassed that total in the 2008 Six Nations Championship He surpassed the try record previously held by Ieuan Evans in 2004 against Italy. He also got a hat-trick of tries in the Second Test against Japan in 2001; 51 appearances after announcing his arrival on the international scene with a hat-trick in the 1995 World Cup game against the same opposition. Equally at home at centre, it was from that position he scored the longest interception try ever seen at the Arms Park, a 90-metre dash against in 1996.