Every Tuesday, we dedicate this segment to the songs that bring you right back to a very specific time in your life - first love, exams, moving out from home, backpacking around the world, nights out, nights in, going to college, bad jobs, falling in love, falling out of love, weddings and babies.
For coming on the show and sharing your Milestone Music Moment, we'll send you a lovely momento of your story. You will receive all the elements of the tale - the date, lyrics of the song and more, all on a beautifully finished poster for you to treasure.
This week's Milestone was brought to us by Caitriona Foskin in Milltown, Dublin, with a track which brings her back to a tough task last year.
Caitriona was taking part in the Dublin Marathon, but hit the wall at the 20-mile mark. Now as anyone who has run a marathon will tell you, the hardest thing to do is to start running again after you stop - so how did she keep on going?
It might have a little something to do with these guys...
You can listen to the chat in full by clicking play in the image above the headline.
If you've a milestone of your own, we'd love to hear all about it. Email your story to firstname.lastname@example.org