One-day races and Classics Gerben Karstens (14 January 1942 – 8 October 2022)[1] was a Dutch professional racing cyclist, who won the gold medal in the 100 km team trial at the 1964 Summer Olympics, alongside Bart Zoet, Evert Dolman, and Jan Pieterse.

Karstens ranks 6th in all-time stage wins in Vuelta a España history.

In the 1974 Tour de France, Karstens finished second in the fourth stage.

The tour organisation set him back to the last place of the stage results, and gave him 10 minutes penalty time in the overall classification, which made him lose his third place.

Thanks to 5 seconds of bonification that Karstens won during intermediate sprints, he took over the yellow jersey from Eddy Merckx.