Info
| Last name | Sierra |
| First name | Juan David |
| Nationality |  Italy |
| Date of birth | 25-01-2005 |
| Age | 21 |
| Date | Rank | Race | |
|---|---|---|---|
 Peace Race (2.2U) | |||
| 98 |  Standings | ||
| 31-05 | 86 | Stage 4Krnov - Šternberk (130.0km) | |
| 30-05 | 80 | Stage 3Zábřeh - Dlouhé (132.0km) | |
| 29-05 | 110 | Stage 2Uničov - Rýmařov (155.0km) | |
| 28-05 | 121 | Stage 1Jeseník - Šumperk (112.0km) | |
| 10-05 | 63 |  In Flanders Fields - In Ieper/Kattekoers (1.2U) | |
| 06-05 | DNF | À travers les Hautes Fagnes (1.2) | |
| 08-03 | 97 |  POREČ Classic (1.2) | |
| 04-03 | 94 | UMAG Classic (1.2) | |
| 05-02 | 5 |  UEC Track European Championships (Madison) (CC) | |
| 02-02 | 7 | UEC Track European Championships (Points Race) (CC) | |
