I just noticed that I got a different result in GPS-Results compared with RealSpeed and GPSAR Pro. In one case it was a very optimistic one. After a but of puzzling I realised the distances calculated were over 500m instead of under. I have drawn Manfreds attention to this and I am sure he will fix it quickly but in the meantime be aware you will often get a different result from this program. The results from RealSpeed v 1.925 and GPSAR Pro agree perfectly. RealSpeed v 1.924 and earlier had an bug that would sometimes miss the best combination of points and give a slower result.