Are you open to using a shared Google sheet per kid? I have a formatted Excel document that can be copied and shared with each kid and then you can see what updates they provide. If you're interested in checking it out, send me a PM with your email address and I can share one with you and you can play around with it. The columns are: minutes (could be changed to miles if you desired), cross training minutes, "feel" (1-10) when they put the number in it automatically color codes it, and then comments. The minutes and cross training minutes are formatted to add up each week automatically.