Oh. Then the description on Garmin App was misleading. It required 64km. It should have read 64.4km. Its a bit annoying, missing out for the sake of a few hundred meters after doing over 64km as described... I bet there are a few disgruntled Garmin runners out there! Thanks for replying.
In my challenge it said that I should run 40 miles but the value under the progress bar was in km. I always do my own calculation to see exactly what is required. The value under the progress bar is truncated so you don't see the decimals.
If you like to it will probably work to edit one of your runs and add 200 meters. That distance could just be GPS inaccuracy.
I understand that this will make people upset. I think the problem is primarily when the goal is in miles and the user is using metric or the other way around. It will probably be correct progress displayed if you are using miles when the requirement is in miles and vice versa with km.
