I saw that this game was kinda empty on the ILs. If you want to run Sonic, here you might find the claimed times that will give you something to struggle against

https://www.soniccenter.org/rankings/sonic_rivals/times

https://www.video-games-records.com/en/sonic-rivals-game-g383/best-time-group-g1468/index

I don't know if the Any% beats these times. But they seem worth a while either way. So I considered sharing them