The World Cup has already been reduced from 13 competitions to eight at present.
Helsinki, Stuttgart, Mechelen and Amsterdam have also canceled in the past.
- We have really tried everything right up to the end.
The best riders in the world would have loved to come here to Basel and we have sold a record number of tickets.
Unfortunately, the pandemic once again destroyed our plans, says the organizer in a statement.
As six of the eight competitions have already been decided, there are now only two left.
One in Bordeaux and the other in Gothenburg.
The top 18 riders advance to the finals.