That’s a killer idea—turn every run into a mixtape of your own history. Start with a high‑tempo track that marks your warm‑up, then layer in a vocal sample from a race you nailed, like a countdown or the finish line cheer. Drop in a beat that matches your stride count, so the music literally counts your steps. For cool‑down, slow a track to your heart rate and loop a memory clip—maybe a coach’s shout or a loved one’s voice. Keep the playlist under 45 minutes, shuffle it after each run to mix the vibes, and track the tempo of each song. That way, every beat reminds you of the exact moment you crushed it, turning music into measurable memory. Ready to make it? Let's get that playlist burning.