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The event only takes place once every 10 years
Penny farthing riders from around the world are taking to the streets for the 1km Knutsford Great Race.
The race, which is only held once every 10 years, challenges riders to a three-hour endurance test.
With 50 teams competing, the winner will be the team that completes the most circuits of a 1km track, within the three hours from 1400 to 1700 BST.
Competitors come from as far afield as New Zealand, Germany, Australia, The Czech Republic and the United States.
The event this year is raising money for Shelterbox, a charity which provides shelter and survival equipment after world disasters.
The penny farthing was invented in 1871 by James Starley.
It was named after the largest and the smallest copper coins in the currency at that time.
In the 1870s a party of enthusiasts are said to have ridden penny farthings from Lands End to John O'Groats (690 miles) in 15 days.
This article is from the BBC News website. ? British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

The event only takes place once every 10 years Penny farthing riders from around the world are taking to the streets for the 1km Knutsford Great Race.
The race, which is only held once every 10 years, challenges riders to a three-hour endurance test.
With 50 teams competing, the winner will be the team that completes the most circuits of a 1km track, within the three hours from 1400 to 1700 BST.
Competitors come from as far afield as New Zealand, Germany, Australia, The Czech Republic and the United States.
The event this year is raising money for Shelterbox, a charity which provides shelter and survival equipment after world disasters.
The penny farthing was invented in 1871 by James Starley.
It was named after the largest and the smallest copper coins in the currency at that time.
In the 1870s a party of enthusiasts are said to have ridden penny farthings from Lands End to John O'Groats (690 miles) in 15 days.
This article is from the BBC News website. ? British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

