Well, because I have a fairly high ballflight my drives are mostly carry (maybe 5m's of run). So in the winter, I average about 250m (275yards), but in the warmer months when the air is thinner and the ground is harder
I get a heap of carry and even a little run on, so I'd say about 270-290m (297-319yards).My longest would be around 365m (400yards)