I’m facing the Week 6 run 3 tomorrow. For the 20min run in Week 5 I did it on a treadmill as I was away from home. It was so easy to monitor speed, incline and time elapsed etc. But now I’ve got a 25 minute run outside, with some uphills and downhills involved on the route I’m not so confident. I don’t like being inside, much prefer the fresh air but just worried that I’ll get tired out. Advice please ?