The women's 20 kilometres walk event at the 2015 European Athletics U23 Championships was held in Tallinn, Estonia, on 10 July.
| Gold | Anežka Drahotová | |
| Silver | Lyudmyla Olyanovska | |
| Bronze | Laura García-Caro |
10 July
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| align=left | align=left | | 1:27:25 | ||||
| align=left | align=left | | 1:28:41 | ||||
| align=left | align=left | | 1:31:52 | ||||
| 4 | align=left | align=left |  | 1:32:13 | PB | ||
| 5 | align=left | align=left |  | 1:32:36 | PB | ||
| 6 | align=left | align=left |  | 1:36:33 | |||
| 7 | align=left | align=left | | 1:37:14 | |||
| 8 | align=left | align=left | | 1:38:27 | |||
| 9 | align=left | align=left | | 1:38:50 | PB | ||
| 10 | align=left | align=left | | 1:39:19 | |||
| 11 | align=left | align=left | 1:39:33 | PB | |||
| 12 | align=left | align=left | | 1:41:21 | |||
| 13 | align=left | align=left |  | 1:43:32 | |||
| 14 | align=left | align=left |  | 1:44:06 | |||
| 15 | align=left | align=left |  | 1:45:19 | |||
| 16 | align=left | align=left |  | 1:46:29 | |||
| 17 | align=left | align=left | 1:46:52 | ||||
| 18 | align=left | align=left |  | 1:48:57 | |||
| 19 | align=left | align=left |  | 1:50:07 | |||
| 20 | align=left | align=left | | 1:50:34 | |||
| 21 | align=left | align=left | | 1:56:15 | |||
| align=left | align=left |  | DNF | ||||
| align=left | align=left | | DQ | ||||
| DSQ | align=left | align=left | |
According to an unofficial count, 24 athletes from 14 countries participated in the event.