Four people who have not cycled for years are taking to the streets for two weeks to see if it will slash their journey times.
The four cyclists all commute to or within Oxford
It is part of a bid by charity Cyclox to promote cycling ahead of National Cycling Week which starts on Saturday.
The four cycling "guinea pigs" all commute to or within Oxford and are looking to beat the city's notorious congestion - and to get fitter.
The charity also say they want Oxford to be made easier to cycle around.
Among the four cyclists are a woman in her 60s who says she has not cycled for 40 years, a man commuting by train and bike from Kent and a man wanting to lose weight by biking instead of a half-hour drive around Oxford's ring road.
Cyclox's James Styring said more had to be done to make Oxford a more bike-friendly place - and the charity was hoping to bring this to councillors' attention.
"The centre of Oxford is based on old mediaeval street plans," he told BBC News Online.
"The council has done a lot to make it easier for buses, but not for cyclists - there's a few areas that need attention."
On Tuesday, 15 June, Cyclox have organised their annual "Commuter Challenge" which sees a bus, car and walker compare journey times into Oxford during the morning rush-hour.