Competitors in the Cheese Rolling on Cooper's Hill race near Brockworth, Gloucestershire on Monday May 26, 2014.

Source: https://www.legit.ng/ask-legit/1521391-20-weird-sports-world-ve-heard-of/

Some say it was all about claiming grazing rights on the common and land around Cooper's Hill, others believe it could have been a fertility ritual.

Source: https://www.dailymail.co.uk/news/article-12136051/Daredevils-hurl-Coopers-Hill-bid-win-7lb-wheel-Double-Gloucester.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

This year, with no police or paramedics in attendance, players will chase a 9-pound, round Double Gloucester cheese down Cooper's Hill.

Source: https://www.huffpost.com/entry/cheese-rolling-knocked-out_n_6475a9fae4b02325c5dca77c