Britain's Alex Dowsett will attempt to regain the record in Mexico tomorrow ©Getty Images

Britain's Alex Dowsett will attempt to regain the International Cycling Union (UCI) hour record in Mexico tomorrow after postponing his attempt in November due to COVID-19.

Dowsett, a Commonwealth Games time trial gold medallist, will bid for the mark - where cyclists try to cover the furthest distance in an hour - at the Velodromo Bicentenario in Aguascalientes.

The venue, which sits at high altitude, has hosted several attempts, including the current mark of 55.089 kilometres set by Belgium's Victor Campenaerts in 2019.

"Last year's attempt was derailed when I contracted COVID-19, but the same reasons for wanting to do it are all still there," said Dowsett, a former Team Sky and Movistar rider. 

"I want to see what I'm capable of and it's an event I just really love and feel privileged to have the opportunity to take on again.

"In terms of difficulty I know the bar has been set extremely high by Victor. 

"It's going to be a very big ask but I think I'm capable. 

"The biggest hurdle this time with it being in Mexico will be the altitude.

"Being at altitude the power output required will be lower than at sea level because of the thin air, but it's not all plain sailing as the thin air also brings a tougher environment for breathing. 

"We think in the end it should be more beneficial than detrimental to be at altitude."

Dowsett held the record for 36 days in 2015 before it was broken by compatriot Sir Bradley Wiggins.

Wiggins mark of 54.526km was surpassed by Campenaerts in April 2019.

The hour record has attracted interest from riders since regulations were updated in 2014 to permit the use of the latest pursuit bikes.