Info
| Last name | Tronstad |
| First name | Karl Jonas |
| Nationality |  Norway |
About Karl Jonas Tronstad
Karl Jonas Tronstad is a Norwegian cycling professional, 0 years old.
| Date | Rank | Race |
|---|---|---|
| 18-11 | 11 | Norwegian National Championships Cyclo-Cross (CN) |
| 31-08 | 58 | Hafjell GP TT (1.2) |
| 21-06 | DNS | National Road Championships - Norway TT (CN) |