You will be able to edit the manually filled-in data for the relevant date again, with the right information, within a 10 day window. For example, for a ride data for Sep 5th, you can edit the data latest by Sep 14th, and no later.
Any auto-imported ride-data from your Strava account cannot be edited by the runners. If the participant feels that any one of their auto-imported ride-data isn’t correct, the participant will first be required to delete that ride-data from the Tour de 100 account after logging-in and then manually enter correct data within the prescribed time limit. Again, needless to say, you will be able to do this within the 10-days window. For example, if there was issue with your Strava imported data for Sep 5th, then you can delete and manually reenter the data latest by Sep 14th, and no later.