It's enough to make you feel dizzy just reading about it. English cycling star Sir Bradley Wiggins has just broken the "iconic" one hour record, travelling 54.526km at a London Track. For the statistically minded, that's 218 laps. Wiggins had set a target of 221 laps but chin up lad - it's still a terrific effort.
There's a host of crazy sports records out there, and we take a look at a few.
Indoor rowing
Our very own Rob Waddell quietly broke a record when he cracked the 15 minute mark for rowing 5km on a stationary machine in 2009. While news leaked out, New Zealand rowing refused to confirm or deny in the immediate aftermath saying training results were top secret. The amazing Waddell set other indoor records and I seem to remember him saying they were so punishing he could feel sick for days. As much as we revere the man, that is a heck of a lot of effort to go nowhere.