Some 300 places are left for the May 16 event, set to begin at Arden School.
Runners can choose between the five-mile main run and two mini runs for the under nines.
Bargain Hunt TV presenter Charles Hanson is the guest of honour.
Knowle and Dorridge Lion Peter Smith and Charles Hanson
The event will raise money for the Parkinson’s Disease Society, Teenage Cancer Trust and fly2help and other local causes.
Organiser Adrian Harris, of Knowle and Dorridge Lions, said: “Since we have been obliged to close the course to traffic for the duration of the Fun Run, 11.45am to 2pm, we have found that the Fun Run sell out each year.
“As usual we shall be welcoming runners from all over the country, not just the Midlands.”
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