With the picture above, I would have to stop running (period) if I want to look like that. Not going to happen! Besides, I would not participate in front of people with the clothes he is wearing. A singlet and shorts is alright with me.
Welly boot throwing was always a firm favourite at our local fete. I think big mac would enjoy it too. You also get as many throws as you want throughout the day. Of course you have to pay for the privilege.
Nuvoleinviaggio has got it right: beach volleyball is the most fun sport to play. As long as you can also jump in the ocean and surf in some fashion (bodysurf, sponge, boardsurf, it doesn't matter... any kind of waveriding in warm water is a primal experience!)