Interesting records in cycling.
Who is the youngest person to ride a bike across Australia?
The youngest person to ride a bike across Australia was Jack Sinclair at 15 years old in 2008. http://en.wikipedia.org/wiki/Jack_Sinclair
Who is the youngest person to ride a bike?
The youngest person to ride a bike is Tod Sleeman who first rode when he was 18 months and 3 days old in 1991. http://wiki.answers.com/Q/What_is_the_youngest_person_to_ride_a_bicycle#page1
The fastest to cycle across Australia
Wolfgang Fasching is the fastest to ride across Australia in 2007 taking only 7 days, 19 hours, 47 min to ride from Perth to Sydney.
First to cycle around the world
Thomas Stevens was the first to cycle around the world in 1884 riding a Penny-Farthing.
Fastest speed on a bike
Fred Rompelberg is the fastest on a bike at 287kph behind a motor vehicle. See a whole lot more crazy speed records on Wikipedia.