If you think fell racing is full on, consider what it would be like to add more dimensions to the challenge: removing the set route, the rules, the other competitors, and running while reading an intricate map.
Orienteering is the most extreme version of hillwalking I can think of. It demands an incredible balance of speed, strength, agility and concentration. Competitors have to make considered judgements while simultaneously navigating with map and compass and running at full pelt over rough terrain. There is no taped course and there are virtually no rules...
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