The Isle of Man Bank Town Centre Cycle Series has been cancelled.
Organisers say it is down to a lower than anticipated level of entries.
The inconvenience of road closures to local residents and businesses could not be justified with the numbers due to take part.
Castletown, Port Erin, Ramsey, Peel and Douglas were due to host races over the summer months.
All entry fees received will be returned in full within seven days.
Officers and partner agencies praised following immigration fraud conviction
Fraudster jailed following Operation Helios
Work to improve mooring at Ferry Terminal in Liverpool scheduled for next week
DOI asks Steam Packet to reschedule sailings due to crane unavailability
Manx Care reports major drop in dental waiting lists
Health body says renegotiated contracts have cut delays by more than 75 percent
Police 'disappointed' to find more than half of vehicles with defects in latest winter checks
25 of the 47 drivers stopped in Ballasalla had issues with their vehicles