It’s achievable by any frequency supported by Meshtastic. The average range you can expect, with good LoS, is between that 5-10km range.
However, if you have different circumstances you can expect less or even far above the average.
https://meshtastic.org/docs/overview/range-tests/
The range test article above shows the current record for a successful ping/chirp to another node (Point to Point, no additional hops). It’s at 254km currently :)
Thanks for the post OP, updating my VaultWarden docker instance ASAP.