Running or jogging whilst carrying a person of any age is not permitted at parkrun events. This includes children in slings, carriers, in your arms, on your shoulders or piggyback.
Walking whilst carrying a child is permitted, as long as their safety and welfare is not compromised, something that is at the discretion of the Run Director on the day. Children may be pushed around events in a buggy, however, they should be dressed appropriately and be comfortable and secure at all times. They should also have reached a stage of physical development where they are able to withstand the rigours of course-specific conditions. If in doubt, contact the parkrun Safeguarding Team via safeguarding@parkrun.com.