The IAAF has published the provisional list of entries to the London 2017 World Championships.
| Event | Athletes entered | Countries represented |
| | | |
| 20km Men | 66 | 33 |
| 20km Women | 64 | 35 |
| 50km Men | 52 | 29 |
| 50km Women | 7 | 4 |
It is very interesting to note that the IAAF technical regulations for London 2017 (103.3.3) provide for the automatic participation of the Area Champion, regardless of whether it has achieved the standard of participation.
Under this principle, the following two athletes were entered in the 50km women:
| Athlete | Nation | Result | Venue | Date |
| | | | | |
| Nair Da Rosa | BRA | 4:39:28 | Lima, PER - Pan-American Cup | 13.05.2017 |
| Susan Randall | USA | 4:54:12 | Santee, USA | 28.01.2017 |
For more, Susan Randall has been entered with the performance of 4:54:12, while in Lima at the Pan-American Cup she arrived 3rd in 5:02:10, but first of NACAC athletes so gaining entry, regardless of result.
Final entry list: click here