Credits to Omega[]
The Feat:[]

The Calc:[]
Godzilla crosses 500 million light years in what appears to be one second or so Off to calcing
500,000,000 light years in kilometers is 4.730365236e+21 Since she did it in one second, it's 4.730365236e+21 km/s or 15,778,799,999,031,328 c/times lightspeed
Damn And Godzilla also perceived itself moving at this speed so yeah
Final Tally: Godzilla/Rozan Flies Across Space: 15,778,799,999,031,328 c or 15 quadrillion times the speed of light!