I am after the same stats re winning distances.
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Found nothing only lads telling me it would cost an arm and a leg to code it..Coding is boring and takes a lot of time.
Haven’t used RI for a while, but as far as I remember you can export winning distances from the Query function into a csv file, then work out the average winning distances for each course/trip/going using that file in Excel. The Pivot Table function in Excel will do that for you easily. No coding required!