Debutants
Aljaž Prah is the youngest debutant in Gran Premio Industrie del Marmo in 2017. There are 25 debutants.
| # | Rider | Team | Age |
|---|---|---|---|
| 1 | PRAH Aljaž | ROG - Ljubljana | 18y + 145d |
| 2 | STANNARD Robert | Mitchelton Scott | 18y + 240d |
| 3 | ULYSBAYEV Dinmukhammed | Astana City | 18y + 297d |
| 4 | SWEENY Harry | Mitchelton Scott | 18y + 309d |
| 5 | JERMAN Žiga | ROG - Ljubljana | 18y + 322d |
| 6 | WILDAUER Markus | Tirol Cycling Team | 18y + 354d |
| 7 | MUGISHA Samuel | Dimension Data for Qhubeka | 19y + 160d |
| 8 | FINKŠT Tilen | ROG - Ljubljana | 19y + 312d |
| 9 | CANEPA Francesco | GM Europa Ovini | 19y + 318d |
| 10 | CANEPA Leonardo | GM Europa Ovini | 19y + 318d |
| 11 | TSOY Vladimir | Astana City | 20y + 19d |
| 12 | JENNER Samuel | Mitchelton Scott | 20y + 42d |
| 13 | STORER Michael | Mitchelton Scott | 20y + 75d |
| 14 | CHOKRI El Mehdi | Dimension Data for Qhubeka | 20y + 111d |
| 15 | SATLIKOV Maxim | Astana City | 20y + 114d |
| 16 | KUZMIN Anton | Astana City | 20y + 175d |
| 17 | BRKIC Benjamin | Tirol Cycling Team | 20y + 224d |
| 18 | PENKO Izidor | ROG - Ljubljana | 20y + 293d |
| 19 | HINDLEY Jai | Mitchelton Scott | 21y + 9d |
| 20 | HAMILTON Lucas | Mitchelton Scott | 21y + 91d |
| 21 | MAIN Kent | Dimension Data for Qhubeka | 21y + 126d |
| 22 | ARERUYA Joseph | Dimension Data for Qhubeka | 21y + 133d |
| 23 | RUČIGAJ Žiga | ROG - Ljubljana | 21y + 185d |
| 24 | DLAMINI Nic | Dimension Data for Qhubeka | 21y + 275d |
| 25 | WACHTER Alexander | Tirol Cycling Team | 22y + 113d |