| 01.05 | |  Volta A Galicia BTT | S2 | |
| 02.05 | |  Englewood Open p/b Trek (XCC) | 1 | |
| 02.05 | |  Rye bike festival / Rye terrengsykkelfestival XCO | 3 | |
| 02.05 | | Rye bike festival / Rye terrengsykkelfestival (XCC) | 3 | |
| 02.05 | | Englewood Open p/b Trek | 1 | |
| 03.05 | |  Specialized Bike Marathon | 1 | |
| 03.05 | |  Klippingracet | 2 | |
| 03.05 | | VII Gigante Small XCM | 2 | |
| 04.05 | | Rye bike festival / Rye terrengsykkelfestival | 1 | |
| 04.05 | | Bilbao Bizkaia Green Series XCO | 2 | |
| 04.05 | | XCO Ciudad de Guadalajara by Witzenmann | 2 | |
| 04.05 | |  Vittoria 3 Nations CuporQ Trophy VAM berg | 2 | |
| 04.05 | |  Bike Revolution #1 - Engelberg | HC | |
| 04.05 | | XI Edition Ultrabike Club Santa Rosa Lanzarote | 2 | Geannuleerd |
| 04.05 | |  XCO Super Cup - Marmeleira | 2 | |
| 04.05 | |  Zanzenbergrennen | 1 | |
| 07.05 | |  sani2c Race | S2 | |
| 09.05 | | Dutch National Championships - XCC | CN | |
| 09.05 | |  Thailand National Championships - XCO | CN | |
| 10.05 | | Gothenburg MTB Race | 1 | |
| 10.05 | | Ötztaler Mountainbike Festival | CS | |
| 10.05 | | HERO UCI Cross-country Marathon World Cup - Capoliveri | CDM | |
| 10.05 | | Portugal CUP XCO Jamor - Cruz Quebrada - Oeiras | 2 | |
| 10.05 | | Gothenburg MTB Race (XCC) | 1 | |
| 10.05 | |  AC Heating cup STUPNOorská kola Stupno | 1 | |
| 10.05 | |  Puchar Polski MTB XCO UCI C1 Muszynianka Poland CUP | 1 | |
| 10.05 | | Swiss Bike Cup Schaan | 1 | |
| 10.05 | |  Israel National Championships - XCM | CN | |
| 11.05 | | Shimano Supercup Massi Santa Susanna | 1 | |
| 11.05 | |  3 Nations Cup Weekend Eupen | 2 | |
| 11.05 | |  Ankara MTB CUP | 2 | |
| 11.05 | |  YASON Serbia EPIC XXXII Fruškogorski maraton Ivan Davosir | 2 | |
| 11.05 | |  Lloyds National Cross Country MTB Series Round 3 - Glentress Forest | 2 | |
| 12.05 | |  Brasil Ride Espinhaço | S1 | |
| 15.05 | | Transgrancanaria Bike | S2 | |
| 16.05 | | Estrada Real #2 - Ouro Branco (XCC) | 1 | |
| 16.05 | |  Hardwood Canada Cup XCO | 2 | Geannuleerd |
| 16.05 | |  Copa Colombia II - Cota - Cundinamarca | 1 | |
| 16.05 | | Estrada Real #2 - Ouro Branco | 1 | |
| 16.05 | | Copa Colombia II - Cota - Cundinamarca (XCC) | 1 | |
| 17.05 | |  Abierto Argentino de MTB U19 | 2 | |
| 17.05 | | Courmayeur MTB Event | 1 | |
| 17.05 | |  SP XCO Bratislava | 3 | |
| 17.05 | | Czech National Championships - XCM | CN | |
| 17.05 | |  International MTB Bundesligaeubacher Mountainbikefestival Bike the Rock | HC | |
| 17.05 | | 6. Wilder Kaiser MTB Race | 1 | |
| 17.05 | |  Mauricius National Championships - XCO | CN | |
| 17.05 | |  French National Championships - E-MTB | CN | |
| 17.05 | | Mauricius National Championships - XCM | CN | |
| 17.05 | |  Nepalese National Championships - XCO | CN | Geannuleerd |
| 17.05 | | 6. Wilder Kaiser MTB Race (XCC) | 1 | |
| 17.05 | | Abierto Argentino de MTB (XCC) | 2 | |
| 17.05 | | Abierto Argentino de MTB | 2 | |
| 18.05 | | Costa Degli Etruschi Epic | 2 | |
| 18.05 | | Bike Revolution #2 - Huttwil | 1 | |
| 18.05 | |  Shimano MTB Liga #2 - Silkeborg | 1 | |
| 18.05 | |  Lithuanian National Championships - XCM | CN | |
| 18.05 | | Jura Bike Marathon by Scott | 1 | |
| 18.05 | |  Costa Rican National Championships - XCM | CN | |
| 18.05 | |  Hellenic National XCO Cup #3 - Chania | 2 | |
| 18.05 | | MTB French Cup - Remiremont | 1 | |
| 18.05 | | Superprestigio MTB - Estella | 1 | |
| 18.05 | |  27. XCO Kamnik | 1 | |
| 23.05 | | Internacional MTB Series #2 - Pará de Minas MG (XCC) | 2 | |
| 23.05 | | Internacional MTB Series #2 - Pará de Minas | 2 | |
| 24.05 | |  MTB XCO Csömör Nagydíj 13. Csömöri Bringafesztivál | 2 | |
| 24.05 | | 3 Nations Cup Festival Vlaanderen | 2 | |
| 24.05 | |  Coupe de Japon MTB Yawatahama International MTB Race + Asia Mountain Bike Series | 1 | |
| 24.05 | | Bike Marathon | 2 | |
| 24.05 | | UCI MTB World Cup XCC - Nové Město Na Moravě | CDM | |
| 25.05 | | Spanish National Championships - XCM | CN | |
| 25.05 | | Serbian National Championships - XCM | CN | |
| 25.05 | | Barkaldo Green Series XCO | 2 | |
| 25.05 | | UCI MTB World Cup XCO - Nové Město Na Moravě | CDM | |
| 25.05 | | Vittoria-Fischer MTB Cup - Seon | 3 | |
| 25.05 | | South African National Championships - XCM | CN | |
| 25.05 | |  Croatian National Championship - XCM | CN | |
| 30.05 | | Israel National Championships - XCO | CN | |
| 31.05 | | XCO Samobor | 1 | |
| 31.05 | |  Towerbos XCO | 1 | |
| 31.05 | | Lugnet XCO | 2 | |
| 31.05 | | Bexs Team MTB XCO | 3 | |
| 31.05 | | Internationaler Raiffeisen Österreich Grand Prix | 1 | |
| 31.05 | | Internazionali d'Italia Series 3# Del Montelloive Degli Angeli | 1 | |
| 31.05 | |  Shimano Supercup Massi Naturland | 1 | |
| 31.05 | | Sherbrooke Canada Cup | 1 | |
| 31.05 | | Lugnet XCC | 2 | |
| 31.05 | | Czech MTB Cup - Ostrava | 1 | |
| 31.05 | | Sherbrooke Canada Cup - XCC | 3 | |
Materiaalzone 
Fietstoerisme 
