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@dom norrish I love your sense of humour. I have downloaded the app. How do you get to see the progress of others? Do you need to make connections?
Also re supporters following their runner. I am guessing there is live tracking and are there timing mats on the course and if so how far apart? I am going to run with my mobile ph for photo ops (need to practice running and taking photos) and was wondering if anyone had used “track my phone” in a big race. If that works successfully the supporters would have a bit of an idea where you are on the course, ie still coming or have already past that point. Sorry for rambling on a bit
The only must I’d say is use the course markers for distance. Your watch won’t be 100% accurate.