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Jeff Browning (aka Bronco Billy) is a veteran ultra runner and endurance coach. He has competed in some of the worldās hardest and most competitive ultra mountain races for over two decades, including Western States 100, Ultra Fiord in Patagonia Chile, Europeās Ultra Trail du Mont Blanc, and Ultra Trail Mount Fuji in Japan. Heās also a 7-time finisher and 2018 champion of the wild and tough Hardrock 100 in SW Colorado. He has finished nearly 200 ultra marathons in his careerā¦
