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In June 2009, I helped the Dartmoor Radio Club to run the race communications for the Dartmoor Discovery Ultra-Marathon. As part of this, I developed some scripts which allowed the estimated location of each runner to be displayed in the communications centre in real-time. Used for this were:
Some screenshots from the spreadsheet are shown below.
The actual Google Earth display used had a scanned-in OS Landranger map as an overlay. For copyright reasons, this cannot be reproduced here but I have reproduced (using genuine data from the race) the display without the overlay below. Click it to view full size.