Doesn't count. Egypt's New Administrative Capital is located only 45km east of Cairo.

Whereas previous epic fails on relocating capitals (/planned cities):

- Nigeria's Abuja (1991) [0] is 330 mi/530 km northeast of Lagos, 1h20 by plane or 12hr by car. Fairly successful relocation.

- Myanmar's Naypyidaw (2008) is 320 km/200 mi north of Yangon [1] Claimed 2025 population 930K, actual 780-900K.

- Indonesia's Nusantara ("will be fully finished in five phases by 2045, coinciding with the 100th anniversary of Indonesia") is on Borneo, 870 mi/11400 km and one island northeast of Jakarta [2]

- also Saudi Arabia previously had King Abdullah Economic City (KAEC, planned since 2005), not a capital replacement: a planned city, intended as a logistics and manufacturing hub. Planned population: 2 million; actual 2002 population: only 7,000. [3] KAEC is referenced in the epic totally-not-sarcastic video Patrick Boyle on "Neom - The Line - The Rise and Fall of Saudi Arabia's Linear City" [4].

[0]: https://en.wikipedia.org/wiki/Abuja

[1]: https://en.wikipedia.org/wiki/Nusantara_(city)

[2]: https://en.wikipedia.org/wiki/Naypyidaw

[3]: https://en.wikipedia.org/wiki/King_Abdullah_Economic_City

[4]: https://www.youtube.com/watch?v=Ak4on5uTaTg&t=31m42s