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The Race Across The Rotundra
There's a little-known race that features an even littler-known group of giants referred to as "Der Biggins". In exchange for large quantities of sustenance (mass needs to amass mass to stay massive), Der Biggins agree to participate in the Rotundra Race.
Using bobsleds as skates, Der Biggins are pushed along by four men (two per "skate"). There must be some cooperation between all parties, since guiding any Biggin over a frozen lake would result in, well, mucho crackage. Everyone, including Der Biggins, must be on the lookout for any obstacles in their collective paths.
The race is about thirty miles, or until appetites flare up.