From the Promoter:
Mammoth Lakes, California is the gateway to mountain adventure and is now hosting a gravel event, brought to you by David Sheek and Amanda Nauman, to challenge the toughest of riders. The inaugural Mammoth Tuff will take place on September 19, 2020. The short course will circle the famous caldera while the long course will travel through the Volcanic Tableland formed by the eruption thousands of years ago. The event is partnering with the Oktoberfest festival and will offer the best finish-line celebration the Village has to offer.
More details at the official press release!