Fredrik Thomassen Sleen 
Race history from official results. Result shows the latest recorded final position in each class.
| Race | Year | Country | Class | Final |
|---|---|---|---|---|
| Vestlandsmesterskapet #1 | 2026 | Norway | Rotax | 🥇 1 |
| Vestlandsmesterskapet #2 | 2026 | Norway | Frivillig trening | - |
| Vestlandsmesterskapet #2 | 2026 | Norway | Rotax | 8 |
| Sparebanken Møre GP [Iame#3] | 2026 | Norway | Rotax | 🥇 1 |
| Sparebanken Møre GP [Iame#3] | 2026 | Norway | Test alle | - |
| PL28 GrandPrix [Iame#4] | 2026 | Norway | Rotax | 🥇 1 |
| NM i karting 2026 | 2026 | Norway | Rotax NM | 🥇 1 |
| Håsken Race | 2026 | Norway | Rotax | 🥉 3 |
| RMC Göteborg | 2026 | Sweden | Senior 125 | 19 |
| RMC Göteborg | 2026 | Sweden | Rotax Senior | 9 |