SAN FRANCISCO, Nov. 11, 2025 /PRNewswire/ -- The World Marathon Challenge (WMC), also known as 7 Marathons 7 Continents 7 Days®, is the original 777 challenge, first staged in 2015. Runbuk continues ...
The World Marathon Challenge, which began Saturday, consists of 65 people running seven marathons in seven days on seven continents.
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