Choose how much you want to sponsor the participant per km. For example: if they plan to run 20km and you want to donate a max of $20 you should pledge $1 per km.
You won’t pay anything until the month is over. You will be notified with the total distance run or walked and the amount of your sponsorship based on your pledge.
You can pre-authorize a credit card transaction, or pledge to sponsor a participant with a cheque, cash, Paypal or Bitcoin