Finse Challenge
Challenge Tour
Tsjechisch Challenge Open
Moskou Challenge
F355 Challenge
Formby Hall Challenge
English Challenge
Wales Challenge
Scottish Challenge
Norton Challenge P86
Champions Challenge
Norwegian Challenge
Sun City Challenge
Challenge Sprint Pro
World Challenge (golf)
Challenge-Brownsville
USA Pro Challenge
Polar Challenge
Estoril Challenge
Challenge of Ireland
Ice Bucket Challenge
Dutch Challenge Open
Challenge League
Watersley Ladies Challenge
Spaans Challenge Open
Challenge response-authenticatie
Nedbank Golf Challenge
Bad Griesbach Challenge Tour
Challenge Cup (Newfoundland en Labrador)
Allianz Challenge de France
Slovakia Challenge 2014
IAAF Hammer Throw Challenge
F430 Challenge
Oceânico Group Pro-Am Challenge
CEV Challenge Cup (mannen)
Charlie Charlie Challenge
Azerbaijan Challenge Open 2014
Challenge-handshake authentication protocol
IAAF World Combined Events Challenge
USA Pro Challenge 2014
Italian Challenge
CEV Challenge Cup (vrouwen)
Challenge Mallorca
Dutch Beer Challenge
Challenge Trophy
Mini Challenge
Bandai Golf: Challenge Pebble Beach
LuK Challenge Chrono
World Solar Challenge
IAAF World Challenge
Europese Challenge Tour 1999
Bad Griesbach Challenge Tour 2014
The Challenge
Challenge de Madrid
Champions Challenge (hockey)
EuroCup Challenge
Beijing World Challenge
Challenge Cup
USA Pro Cycling Challenge 2013
Champions Challenge mannen 2001
A2 Racer: World Challenge
Challenge Aero
AFC Challenge League
Challenge Tour Championship
Global Green Challenge
Europese Challenge Tour 2011
Teen Challenge
Turkish Airlines Challenge
World Challenge
Europese Challenge Tour 2014
Champions Challenge mannen 2003
Champions Challenge mannen 2005
IPB Challenge
Wendy's Charity Challenge
Champions Challenge vrouwen 2002
USA Pro Challenge 2015
Challenge Sprint Pro 2011
Is Molas Challenge
Dragon Challenge
Bergson Winter Challenge
Vodafone Challenge
Champions Challenge II (hockey)
World Solar Challenge 2007
Fenkil Northern Red Sea Challenge
Gujarat Kensville Challenge
Sun International Challenge
World Solar Challenge 2009
Graceland Challenge
Champions Challenge mannen 2012
AFC Challenge Cup 2012 (kwalificatie)
AFC Challenge Cup
Northern Ireland Open (golf)
World Solar Challenge 2011
Challenge Records
Europese Challenge Tour 2010
Champions Challenge vrouwen 2003
Europese Challenge Tour 2013
Dutch Beer Challenge 2016
Bio Challenge
Tsjechisch Challenge Open 2013
CEV Challenge Cup
Aziatische Formule Renault Challenge
White van man challenge
Dutch Beer Challenge 2018
Intercontinental Rally Challenge in 2008
Russian Challenge Cup
Scottish League Challenge Cup
Europese Challenge Tour 1995
Dutch Beer Challenge 2019
Europese Challenge Tour 2012
AFC Challenge Cup 2010 (kwalificatie)
Radio Algoa Challenge
Dutch Supercar Challenge
Challenge Mallorca 2011
Super Sport Challenge
Chip's Challenge
Champions Challenge vrouwen 2005
Europese Challenge Tour 1994
Plaza Challenge
International Documentary Challenge
Champions Challenge vrouwen 2012
Intercontinental Rally Challenge in 2007
Intercontinental Rally Challenge in 2009
Challenge Trophy 1967
NHL Open Ice: 2 on 2 Challenge
Dutch Beer Challenge 2021
Postbank Challenge
International Rally Challenge in 2006
Europese Challenge Tour 1993
Challenge Sprint Pro 2014
Dutch Beer Challenge 2022
Challenge Chargeurs
Swiss Challenge 2013
Women's Challenge
Challenge de Catalunya
Challenge Sprint Pro 2013
Europese Challenge Tour 1991
Pilsen Golf Challenge
Dutch Beer Challenge 2017
Challenge Trophy 1973
Steel Challenge
Challenge de Catalunya 2014
Intercontinental Rally Challenge in 2010
Lunar Lander Challenge
City Nature Challenge
Self Driving Challenge
Nedbank Golf Challenge 2012
Le Vaudreuil Golf Challenge
World Solar Challenge 2013
Ferrari 458 Challenge
Ladies Norwegian Challenge
World Solar Challenge 2015
National Film Challenge
Challenge Mallorca 2004
Ronde van Spanje voor vrouwen
Challenge Mallorca 2006
Intercontinental Rally Challenge
Dutch Beer Challenge 2023
Sun Boardwalk Golf Challenge
Credit Suisse Challenge
Champions Challenge II mannen 2011
Nashua Wild Coast Sun Challenge
Europese Challenge Tour 1990
Reflexity: Pinball Challenge
Champions Challenge mannen 2011
Dubliner Challenge
Over de streep
WPGA International Challenge
Challenge Sprint Pro 2012
Challenge Trophy 1974
Scottish Challenge 2014
Doc Salbe PGA European Challenge
Swiss Challenge 2014
Challenge Desgrange-Colombo 1958
Saker Sportscar Challenge
Wild Waves Golf Challenge
Intercontinental Rally Challenge in 2012
Challenge of Tutankhamon
Finnish Challenge 2012
Challenge Trophy 1977
Europese Challenge Tour 2007
Intercontinental Rally Challenge in 2011
AFC Challenge Cup 2008 (kwalificatie)
Challenge Tour Grand Final
Challenge League 2019/20
Champions Challenge II vrouwen 2011
Can Grannies do donuts?
Challenge Mallorca 2007
Volvo Cross Country Challenge
Challenge Trophy 1975
Challenge Desgrange-Colombo 1953
Challenge Roth
AFC Challenge Cup 2014 (kwalificatie)
Europese Challenge Tour 2009
Northern Ireland Challenge
Dutch Beer Challenge 2015
Europese Challenge Tour 1992
Dutch Beer Challenge 2020
Norwegian Challenge 2012
EHF European Cup