Free postage and packaging.
Run, plod, skip or walk 10K. Complete the distance in one hit or spread it out over several runs.
Complete within 30 days and upload your proof of completion.
Receive your medal and be proud.
Proof can be a picture of a treadmill screen, or a screenshot of a phone or watch app. You don't have to have a fitbit or garmin to do this - most phones have a health and fitness app already downloaded.