Guernsey Police is appealing for witnesses to the incident, which happened on Sunday morning sometime around or before 09:00 in the area of Bailiff’s Cross.
It is reported that the motorist spat at the cyclists as they drove past the group.
Anyone with information or who witnessed the incident is asked to contact PC 94 Hopkins on 725111 or call Crimestoppers anonymously on 0800 555 111.
Pictured: Witnesses to the incident should contact Guernsey Police.