Today I ran around 2:30 pm. It was a muggy 82 degrees. The run was my usual 30-minute run, albeit a very sluggish, difficult run through an exceptionally hilly neighborhood in Pittsburgh.
In a word, the hills kicked my ass. It was the first time in a long time that I was so out of breath that I had to momentarily stop to catch my breath on two occasions. Although I've done hill workouts in the past, there's nothing quite like the experience of running up the hills of Pittsburgh. They are incredibly steep, & often feel like never-ending ascending mountains! (Although I've not yet had the experience of running the hills of San Francisco, I'm sure it's probably very similar!)
My pace was considerably slower today; the combination of the heat & the hills didn't help much to that effect. I felt like at any moment that I was going to melt into the pavement.