This morning it was cooler outside, mid-60s. low humiditiy, so the runing weather was a LOT nicer than it had been though to make it ideal there needed to be a breeze.

I had an optimized run to finish out the week with a 45 min run, 2 min walk, 5 min run and of course warmup & cooldown. I finished the 45 min run segment nice and strong, but the short 5 min interval at the end was a struggle. I think you are right @Discombobulated in saying that running intervals is harder than running straigh segments. The way I felt this morning, it would have been much easier to run 50 min straight instead of broken up.

Now I'll be starting on the last week of 10K runner next week which will end with the 60 min run. Still am a bit unsure if I will be able to tackle that!