Running Towards KC

I ran today. Warmed up and then some sprint repeats. Kept it flat for today, but there will be hills next week. Two sets of stairs close together and near the finish in KC. You must prepare for it. I remember back in the day before bikes. All I did was run. Every day I'd run. Before I discovered bikes. Have you every looked back on a run and really liked it? Have you ever looked back on a bike ride and thought it sucked? Why did I ever run?