There has been an enormous increase in the number of trackpoints that my iPhone 6S+ is recording for recent walks. I haven't pinned down the cause yet. Could be some mistake of mine, a setting or whatever, although I'm darned if I can see any on the iPhone.
Here is a selection of results:

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Terry, East Grinstead, UK
Here is a selection of results:

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Terry, East Grinstead, UK