By STEPHEN REGENOLD – New York Times
…
Ice bike racing, a subgenre of the subgenre of winter cycling, is a hybrid discipline where spiked tires bite solid ice on twisting, circuitous courses cut from a mantle of snow. Riders pedal hard on straight-aways, then slide and fishtail through the turns. Frozen lakes and rivers serve as the medium of the sport, which mixes elements of a sprint road race with a dirt bike rally.
https://travel.nytimes.com/2007/02/02/travel/escapes/02adventurer.htmloldId.20070205113226140
Biking in Baltimore