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In page Long-distance running:
"The sport has retained its status at the scholastic level, particularly in the United Kingdom and the United States. At the professional level, the foremost competitions come under the banner of the World Athletics Cross Country Tour.[citation needed] While cross-country competitions are no longer held at the Olympics, having featured in the athletics programme from 1912 to 1924, it has been present as one of the events within the modern pentathlon competition since the 1912 Summer Olympics.[citation needed] Fell running, trail running, and mountain running can all be considered variations on the traditional cross country, which incorporate significant uphill and/or downhill sections as an additional challenge to the course.[citation needed]
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