| 01.05 | |  29 Memorial Andrzeja Trochanowskiego | 1.2 | |
| 01.05 | |  Rund um den Finanzplatz Eschborn-Frankfurt | 1.UWT | |
| 01.05 | |  Circuit de Wallonie | 1.2 | |
| 02.05 | | 18 Memorial Romana Sieminskiego | 1.2 | |
| 03.05 | 06.05 |  Rhône-Alpes Isère Tour
| 2.2 | |
| 03.05 | 07.05 |  Tour d'Azerbaïdjan | 2.1 | |
| 05.05 | 09.05 |  Five rings of Moscow | 2.2 | |
| 05.05 | 07.05 | CCC Tour - Grody Piastowskie | 2.2 | |
| 05.05 | |  Campeonato Panamericano de Ruta TT | CC | |
| 05.05 | 28.05 |  Giro d'Italia | 2.UWT | |
| 05.05 | 07.05 |  Vuelta Ciclista Comunidad de Madrid | 2.1 | |
| 06.05 | |  Sundvolden GP | 1.2 | |
| 06.05 | |  Ronde van Overijssel | 1.2 | |
| 07.05 | | Flèche Ardennaise | 1.2 | |
| 07.05 | |  National Road Championships - Cyprus TT | CN | |
| 07.05 | | Circuito del Porto - Trofeo Arvedi | 1.2 | |
| 07.05 | | Ringerike GP | 1.2 | |
| 10.05 | 14.05 |  Tour de Tunisie | 2.2 | |
| 11.05 | 14.05 |  Tour of Ankara | 2.2 | |
| 13.05 | |  109th Scandinavian Race in Uppsala 1909-2017 | 1.2 | |
| 14.05 | 20.05 |  Amgen Tour of California | 2.UWT | |
| 14.05 | | 71e Profronde van Noord-Holland | 1.2 | |
| 14.05 | | Grand Prix Criquielion | 1.2 | |
| 14.05 | | National Road Championships - Cyprus | CN | |
| 17.05 | 21.05 | Baltyk - Karkonosze Tour | 2.2 | |
| 19.05 | |  National Road Championships - Morocco TT | CN | |
| 19.05 | 21.05 | A Travers Les Hauts De France - Trophée Paris-Arras Tour | 2.2 | |
| 19.05 | 21.05 | Vuelta a Castilla y Leon | 2.1 | |
| 20.05 | |  Berner Rundfahrt / Tour de Berne | 1.2 | |
| 20.05 | 24.05 |  Tour of Albania | 2.2 | |
| 21.05 | | National Road Championships - Morocco | CN | |
| 21.05 | 28.05 |  Tour of Japan | 2.1 | |
| 21.05 | 28.05 |  An Post Rás | 2.2 | |
| 21.05 | | Grand Prix de la Somme « Conseil Départemental 80» | 1.1 | |
| 23.05 | 28.05 | Tour des Fjords | 2.1 | |
| 24.05 | 28.05 |  Flèche du Sud | 2.2 | |
| 25.05 | 27.05 |  GP Cycliste de Gemenc | 2.2 | |
| 26.05 | |  Horizon Park Race for Peace | 1.2 | |
| 26.05 | 27.05 |  Tour of Estonia | 2.1 | |
| 27.05 | | Grand Prix de Plumelec-Morbihan | 1.1 | |
| 27.05 | 28.05 | Tour du Jura Cycliste | 2.2 | |
| 27.05 | | Horizon Park Race Maidan | 1.2 | |
| 28.05 | | Horizon Park Classic | 1.2 | |
| 28.05 | | Boucles de l'Aulne - Châteaulin
| 1.1 | |
| 29.05 | | Winston Salem Cycling Classic | 1.1 | |
| 29.05 | |  National Road Championships - Uzbekistan TT | CN | |
Materiaalzone 
Fietstoerisme 
