The Ridgeway Challenge continual running event is 85 miles along a 5000 year old trackway through the Chiltern Hills and North Wessex Downs, waymarked throughout with 9,000 feet of ascent. This calculator is based on the combined results from 2011 and 2012. There were 208 runners, and 87% finished. Read more at the Ridgeway Challenge website.
£✔
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Twilight was from 20:42 → 05:31 BST (8:48 hrs of darkness)
