Will she or won't she?

Tomorrow, as part of our docent training at Bouverie Preserve (Glen Ellen, California) we will be going on our third hike.  What's different is that this one is a longer hike straight up to the crest of the Mayacamas Mountain Range.  To be honest, I don't know if I can do it.  I was huffing more than anyone else on the last two hikes even though I walk daily.  However, we live in a valley so the places where I walk are flat and it was those little hills that got me.  This past week, in preparation, I had my treadmill set on the highest incline and used that as a training resource and did, in fact, notice that I was lasting longer as the week went on.

The question is, Will I make it to the ridge tomorrow or will I have to leave the hike early?  I will be mortified if I'm not successful!