Running-related events

Hi, I'm a runner and the owner of a small take-away café in Valencia (Spain). During the last Valencia Marathon, we organized a free poster printing event with your official marathon time, which was very well received by dozens of marathoners. Could you give me some advice or examples of similar events you've seen in other cities, races, or clubs? I'm thinking of organizing group training sessions with the café as a meeting point, or something similar, not just a one-off event but something more regular. Thanks for any suggestions!