| Temporada | Equipo | Competición | PJ | G | A | Nota | ||
|---|---|---|---|---|---|---|---|---|
| 2027 | Iceland U21 | Euro U21 - Qualification | 2 | 0 | 1 | 0 | 0 | – |
| 2026 | Iceland | World Cup - Qualification | 2 | 0 | 0 | 0 | 0 | – |
| 2025 | Iceland U21 | Euro U21 - Qualification | 3 | 0 | 0 | 0 | 0 | – |
| 2024 | Iceland U21 | Friendly International | 1 | 0 | 0 | 0 | 0 | – |
| 2024 | Iceland U20 | Friendly International | 1 | 0 | 0 | 0 | 0 | – |
| 2023 | Iceland U19 | Euro U19 | 3 | 0 | 0 | 0 | 0 | – |
| 2023 | Iceland U19 | Euro U19 - Qualification | 5 | 0 | 0 | 1 | 0 | – |
| 2022 | Iceland U18 | Friendly International | 2 | 0 | 0 | 0 | 0 | – |
| 2021 | Iceland U19 | Friendly International | 1 | 0 | 0 | 0 | 0 | – |
| Total | 20 | 0 | 1 | 1 | 0 | – | ||
| Fecha | Desde | Hacia | Tipo | |
|---|---|---|---|---|
| - | Vikingur Reykjavik | Lech Poznan | Transfer | |
| 07 ene 2022 | Bologna | Vikingur Reykjavik | Transfer | |
| 07 ene 2021 | Breidablik | Bologna | Transfer | |
| - | Bologna | Breidablik | Return from loan | |
| 10 jul 2020 | Breidablik | Bologna | Loan |
G. Thordarson career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.