| 01.04 | |  La Route Adélie de Vitré | 1.1 | |
| 01.04 | 06.04 |  Tour of Thailand | 2.1 | |
| 01.04 | |  National Road Championships - Saudi Arabia TT | CN | Cancelled |
| 02.04 | |  Volta Limburg Classic | 1.1 | |
| 02.04 | |  Gran Premio Miguel Indurain | 1.Pro | |
| 03.04 | |  Ronde van Vlaanderen | 1.UWT | |
| 04.04 | 09.04 | Itzulia Basque Country | 2.UWT | |
| 05.04 | 08.04 | Circuit Cycliste Sarthe - Pays de la Loire | 2.1 | |
| 06.04 | 09.04 | Circuit des Ardennes | 2.2 | |
| 06.04 | | Scheldeprijs | 1.Pro | |
| 07.04 | 11.04 |  Vuelta a Formosa Internacional | 2.2 | |
| 09.04 | |  Oceania Cycling Championships TT | CC | |
| 10.04 | | Oceania Cycling Championships | CC | |
| 10.04 | | Amstel Gold Race | 1.UWT | |
| 10.04 | 17.04 |  Presidential Cycling Tour of Türkiye | 2.Pro | |
| 11.04 | 14.04 |  Giro di Sicilia - Tour of Sicily | 2.1 | |
| 12.04 | | Paris - Camembert | 1.1 | |
| 12.04 | |  National Road Championships - Qatar TT | CN | |
| 13.04 | | De Brabantse Pijl | 1.Pro | |
| 13.04 | 17.04 | Tour du Loir et Cher | 2.2 | |
| 13.04 | 17.04 |  Belgrade Banjaluka | 2.1 | |
| 14.04 | | National Road Championships - Argentina TT | CN | |
| 15.04 | | Classic Grand Besançon Doubs | 1.1 | |
| 16.04 | | Tour du Jura Cycliste | 1.1 | |
| 16.04 | | Arno Wallaard Memorial | 1.2 | |
| 17.04 | | National Road Championships - Argentina | CN | |
| 17.04 | | Paris-Roubaix | 1.UWT | |
| 18.04 | 22.04 | Tour of the Alps | 2.Pro | |
| 20.04 | | La Flèche Wallonne | 1.UWT | |
| 24.04 | | Liège-Bastogne-Liège | 1.UWT | |
| 24.04 | |  Rutland-Melton CiCLE Classic | 1.2 | |
| 25.04 | 01.05 | Le Tour de Bretagne Cycliste | 2.2 | |
| 26.04 | 01.05 |  Tour de Romandie | 2.UWT | |
| 27.04 | 01.05 |  International Tour of Hellas | 2.1 | |
| 27.04 | 01.05 |  Tour of the Gila | 2.2 | |
| 29.04 | 01.05 | Vuelta Asturias Julio Alvarez Mendo | 2.1 | |
| 29.04 | |  Grand Prix Nasielsk-Serock | 1.2 | |
| 30.04 | | Grand Prix Wyszków | 1.2 | |
| 30.04 | | PWZ Zuidenveld Tour | 1.2 | |
