e.g. Can you run a 10 km this month (one activity) or can you run 80 km over the month (many activities).
Give us one or two lines to describe your challenge, e.g. "Up the pace, and your health in November by running a total of 40 km."
Please provide an image you want to display with your challenge. This can include your company logo or any content related to the challenge you want to issue.
The image should be 640x360 pixels (16:9 aspect ratio). If an image is not provided we will select an appropriate image.