every race. A faulty or slow dismount/remount may cost valuable seconds, waste energy or cause the competitor to crash. Often, when sections are extremely technical or become impossible to ride due to erosion from repeated wear or inclement weather, the racer will carry the bike and jog for an extended time to save energy. A more recent development to overcome obstacles such as barriers and sometimes ditches is the bunnyhop, a technique which came to prominence in 1989 when Danny De Bie used it in his successful World Championship run. Bunny hopping has become less popular as a result of race directors seeking to prevent its use by setting up two or three barriers in a row. Skilled riders are still able to hop the obstacles, despite the back to back to back barriers. Many riders, such as Sven Nys, an ex-BMX racer, were known for their technical skill in bunny-hopping over various obstacles. Major series and races UCI Cyclo-cross World Championships UCI Cyclo-cross World Cup National Cyclo-cross Championships Superprestige (Europe) X²O Badkamers Trophy (Belgium) United States National Cyclo-cross Championships (United States) U.S. Gran Prix of Cyclocross (United States) *Now defunct USCX Cyclocross Series (United States) MFG Cyclocross (United States) Cross Crusade (United States) SSCXWC (Singlespeed Cyclocross World Championship) See also Gravel cycling References External links Cyclocross Magazine is a print magazine, website and online community dedicated cyclocross news, race coverage, products, and culture. Cyclo-cross Videos – Helmet camera videos of Cyclo-cross racing Plus One Lap cyclo-cross info/FAQ/ – Cyclocross Bike Gallery of lightweight and custom bikes. Cyclofiend.com CX Bike Gallery – Gallery of Cyclocross Bicycles Video highlights of the latest European races CyclingReporter.com Cross articles and how-tos for beginning and experienced racers Cyclocross Rider Video produced by Wisconsin Public Television "Cyclo-cross Organiser's Workbook". British Cycling. Cycle racing by discipline Sports originating in France