Cycle two laps around Milford Haven town centre, along the Rath and finishing at Milford Waterfront.
To take part, register at the car park next to the Welsh Bakery, off Robert Street, SA73 2JW between 09:00 – 10:30 before the challenge starts at 11:00.
There will be a range of activities at the finishing line including balance bikes for children, flat repair demonstrations, bike safety information and e-bike taster sessions with Physiofit West Wales.
All participants must have a roadworthy bike and wear helmets at all times during the ride. Children under the age of 18 must have parental consent, and those under the age of 16 must be accompanied by a parent or guardian.