[stefs]

yes, on a mostly flat course i'd be able to keep it up too. maybe i misinterpreted it a bit, but i pictured original commenter cruising at 30+km/h _in london_ (city proper) on a city- or trekking bike.

during the summer my ftp was around 270 (~3.8w/kg) and i had a hard time staying close to 30km/h avg on a local bike path where one does have to stop and slow down occasionally for safety reasons (i.e. real world conditions - even though my computer pauses when i come to a full stop). in the city i can go 30-40km/h on my single speed if i ride on the road in car traffic, but on bike paths that's usually way too dangerous because of the speed difference to other cyclists and pedestrians.

sure, on tempus fugit i can go close to 40km/h for 100km with a TT bike.