In high school I was a 50-51 second 440 guy. Not blazing in the big scheme of things but for my conference it meant winning at most dual meets and top 3 at finals.
Most meets I would do both the relays (4x110, 4x440) the open 440 and either the 100 or 220. But every so often coach would have me do something different instead of one of the sprints. I ran both medium and high hurdles a couple of times or he'd have me do long or triple jump etc. I was always happy to fill in where we had a gap in the line up for that meet.
One time he had me do the 880 and it was the only time I ever went back to him and said "Don't ever have me do that again." I thought I was pacing myself well hanging just off third place runner's shoulder heading into the final turn. But when the others kicked my legs seized. It was just like in Bill Cosby's "The Track Meet" bit, ol' rigor mortise jumped up and grabbed me. I didn't come in DFL but I also wasn't far from it.