Demi Vollering’s professional cycling career took off in 2019, making a significant impact in her debut year with Parkhotel Valkenburg. She achieved a breakthrough third-place finish in Liège-Bastogne-Liège, followed by victories at the Volta Limburg Classic and the Festival Elsy Jacobs prologue. Prior to this, Vollering had joined SwaboLadies in 2018, where her performances in stage races such as Thüringen and Ardèche garnered attention. She continued to demonstrate her prowess in 2020, securing third-place finishes at La Course by Le Tour de France and La Flèche Wallonne, solidifying her reputation as a formidable talent on the world stage.
Vollering continued her winning streak in 2024, securing victories at the Vuelta Espana and the Tour de Suisse. During the Tour de France Femmes that year, she demonstrated her strength by winning Stage 3’s time trial in Rotterdam and the arduous Stage 8 on Alp d’Huez, further earning a silver medal at the UCI Road World Championships Time Trial in Zürich. Looking ahead to 2025, Vollering signed a two-year contract with FDJ-Suez, bringing new high-profile sponsorships with Nike and Specialized. She promptly delivered results, winning Setmana Ciclista Valenciana, Strade Bianche, and Volta Ciclista a Catalunya Femenina early in the 2025 season, underscoring her ongoing success and marketability.