10 December 2017
Nobeyama, Nagano Prefecture, Japan| # | Rider | Age* | Team | Time |
|---|---|---|---|---|
| 1 |  | 19 | 49:18 | |
| 2 | | 20 | 0:56 | |
| 3 | | 20 | 1:01 | |
| 4 | | 18 | 2:18 | |
| 5 | | 21 | 2:45 | |
| 6 | | 18 | 3:25 | |
| 7 | | 19 | 4:02 | |
| 8 | | 20 | 4:03 | |
| 9 | | 20 | 4:52 | |
| 10 | | 20 | 5:34 | |
| 11 | | 21 | 6:37 | |
| 12 | | 21 | ||
| DNF | | 21 |
* Age: UCI-age. Age of the rider at the end of 2017.