Since the original 1963 Frisbee flying discs have evolved, becoming ubiquitous and far-ranging. Effects of drag, lift, pitching moment and spin on range are analysed. With lift, ranges significantly exceed the drag-free ballistic range. An upper limit wings level case, optimized for range, is compared with the realistic free case of a spinning, banking disc. For 30 m/s launch and 0.033 minimum drag coefficient the wings level range is 186 m, but the free range only 157 m. Tests report ranges between 77-170 m. The procedure is a powerful tool for designing superior discs.
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