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William Calleja is a competitive kart racing driver from Australia, currently ranked #8 in the world in the OK category with a WKR Rating of 901.3 from 9 counted races. Rankings by World Karting Rankings, updated August 3, 2026.
William holds P8 of 323 ranked drivers in the OK world standings, with a WKR Rating of 901.3 built from 9 counted races — a top-10% position worldwide.
William’s most recent final in our database was P1 at 2026 Asum Ring - Kristianstad on 2 August 2026.
In the fight for OK positions, William trails Qarrar Firhand (P7) by 99.6 rating points and holds a 40.7-point margin over Jindrich Pesl (P9).
Races this driver has competed in that are in our database and count toward their WKR rank — these are participations, not race results.
William Calleja has 15 counted race participations across 11 events in OK, OK-Junior recorded in the WKR database. William Calleja currently holds world rank #8 in OK with a WKR Rating of 901.3. Compare with other drivers from Australia on the drivers list.
| Date | Race |
|---|---|
| 02 Aug 2026 | 2026 Asum Ring - Kristianstad |
| 02 May 2026 | Champions of the Future Euro Series 2026 R2 - Valencia |
| 12 Apr 2026 | FIA Karting European Championship 2026 R1 |
| 04 Apr 2026 | Champions of the Future Euro Series 2026 R1 - La Conca |
| 22 Mar 2026 | WSK Super Master Series 2026 Round 5 |
| 08 Mar 2026 | WSK Super Master Series 2026 Round 4 |
| 22 Feb 2026 | WSK Super Master Series 2026 Round 3 |
| 08 Feb 2026 | WSK Super Master Series 2026 Round 2 |
| 25 Jan 2026 | WSK Super Master Series 2026 Round 1 |
| Date | Race |
|---|---|
| 08 Jun 2025 | 2025 Viterbo |
| 04 May 2025 | 2025 Portimao |