Debutants
Willy Kemp is the youngest debutant in World Championships in 1948. There are 21 debutants.
| # | Rider | Team | Age |
|---|---|---|---|
| 1 | KEMP Willy | Luxembourg | 22y + 238d |
| 2 | IMPANIS Raymond | Belgium | 22y + 308d |
| 3 | LAZARIDÈS Apo | France | 22y + 311d |
| 4 | MAGGINI Luciano | Italy | 23y + 98d |
| 5 | SOMMER Hans | Switzerland | 24y + 96d |
| 6 | PLATTNER Oscar | Switzerland | 26y + 97d |
| 7 | CROCI-TORTI Emilio | Switzerland | 26y + 138d |
| 8 | ORTELLI Vito | Italy | 27y + 48d |
| 9 | BIVER René | Luxembourg | 27y + 303d |
| 10 | OCKERS Stan | Belgium | 28y + 201d |
| 11 | AESCHLIMANN Georges | Switzerland | 28y + 224d |
| 12 | BUYSSE Achiel | Belgium | 29y + 246d |
| 13 | SIJEN Hubert | Netherlands | 29y + 275d |
| 14 | PAUWELS Frans | Netherlands | 29y + 349d |
| 15 | LE STRAT Ange | France | 30y + 186d |
| 16 | DUPONT Marcel | Belgium | 30y + 317d |
| 17 | LANG Robert | Switzerland | 31y + 17d |
| 18 | CAFFI Urbain | France | 31y + 225d |
| 19 | LAMBRICHS Jan | Netherlands | 33y + 62d |
| 20 | PASQUINI Bruno | Italy | 33y + 273d |
| 21 | MARCELAK César | France | 35y + 230d |