I’ve done several Iron Butt rides which is 1,000 miles in 24hrs but my best I did 10,500 miles in 12 days on a 2004 Electra-glide Standard back in 2010 at age 55.
9,132 of those miles were done in 246hrs and 15 minutes on an endurance race... Buddy with me did it on a 2008 Fatboy even more impressive but he was younger about 50.
I’d never get on an electric bike let alone own one.
Farthest I’ve ever ridden in one shot id 350+/- miles several times................