Aros runs on different platforms including X86 (X64), ARM and PPC. One of the latest branches is 68k. Aros even runs on old amiga hardware. Aros Vision is based on this branch with lots of 68k components and software added. You can download it here. Download conditions here.
Aros on emulation (UAE)
Aros 68k already runs on many different platforms including Windows (WinUAE and FS-UAE), Macintosh and Linux (FS-UAE), Aros x86, ARM based hardware and Android (UAE4ALL). Another variant is AMINUX that boots from stick.