Updated: June 10, 2009, 1:43 PM ET
STIHL TIMBERSPORTS events
Mimicking the felling of a tree, the competitor races to chop through 12-14 inches of vertical white pine. The competitor must chop from both sides of the log and the time ends when the block is severed. Precision is key to success in this event. Stamina is the primary challenge because this is one of the most physically exhausting events. David Bolstad set the world record using white pine for the standing block chop at 12.28 seconds in 1999. This discipline requires that competitors wear special protective gear.

