Yeah I suppose it would be easy to cheat on that one.
I'd say posts without showing an ending date in a certain time , and ending mileage would be void. For example: before you head out take a video of the date on your phone or maybe a billboard somewhere as well as your starting mileage. Then you can say approx how long the trip will be, wether is be days or hours. At then end, take a video of your ending date and mileage in the same way, as well as a GPS route you took. There are many apps out there that leave a GPS trail of your journeys.
For the Iron Butt challenges you need to document your trip with receipts and having a gas station employee confirm your mileage. But I think if we did a endurance challenge we could skip the actual witness part of it as many gas stations in Europe at least is entirely unmanned and rarely open 24/7, which might be a problem if you are a bit hardcore about it (night ride)I know I'm like 8 months too late, but the rule should be to find one of those signs in front of a business that show the date/time/temperature, start with one and end with one.
don't worry, When a starting date will be set and finalized, the assignments will also be finalized.I may be interested in participating in this but there is no certainty on what the challenges will be as everyone is spit balling a few good'ns. Will these be released with a confirmed start date?
It may be worth noting the nation's differences, so i think it has to be universal among all nations also I'm not feeling to do this if it's going to put me out of pocket drastically. Super-unleaded ain't cheap bros lol