I'll keep on until the end of the year although I know December can be somewhat troublesome.
In miles it would get me across all of Europe, most of North Africa, as far as Riyadh, Saudi Arabia maybe to Perm in Russia or to Hammerfest at the top of Norway. Except there's more gradients than I've actually covered.
Or I could fly to the edge places in about 6.5 hours. I'll keep on cycling though.