When you start doing this sport, it doesn't take long to amass a drawer full of medals. I have yet to get one for a 5K, but have got some for 10Ks and Sprint triathlons, as well as half marathons and my half ironman (oddly, I have none for Oly triathlons). And you know what, every time I get a medal, I relish it, regardless of the race distance. I'll wear it for the rest of the day, or until I'm willing to let the kids have a turn. Then they usually end up in a drawer...
A couple of days ago, the kids were playing "races". (On a side note, if I ever need an affirmation that the time I take for myself also benefits my kids, it's moments like that.) They had all my medals and a couple of theirs, and were running around and winning them.
All my medals, except for one. Because I refused to share my Half Ironman medal.
That one, I put around my neck and wore for the rest of the day. A reminder of what I am capable of when I put my mind to it. What I am able to do.
So, if you've got some medals hanging out in a drawer, go and grab one (or more) and put it on for a while. It can be from a 5K or an Ironman, but for today, pick the one that you want to remember and wear that medal. You earned it.