It's not the heat, it's the humidity

I got a decently early start for this morning's 12 miler. We had some rain last night so the temperature was down a bit from this last couple of weeks (64 degrees vs. 70+ the last two weeks). However, when I stepped out of the car I started sweating immediately. According to Longmont's Weather Underground the humidity stood at about 90%. I started out and the humidity was immediately oppressive.

 I was trying a new app today, called "Zombies! Run!" which mixes dialog in with your music. The intro is that your helicopter has crashed on it's way to a safe zone after the zombie apocalypse has happened. The people in the safe zone talk to you, and you pick up materials and supplies along your run to the base, and there are a multitude of missions to go through. Sample:

 "Hello...running person. I don't know you but I have you on camera. There's a small army of zombies to your left...you need to get to move faster." At one point there was a zombie moaning in my left ear. It was creepy! That was also my fastest split of the day.

 Since this was my long run I was keeping my pace between 10:40 and 11:40. They went like this:

1. 10:40 
2. 10:30 
3. 10:27 
4. 10:14 - Zombie! Run! 
5. 11:30 Mile 5 is where I felt the humidity get to me. Ate a fuel gel. 
6. 10:55 At this point I was doing the math in my head as to whether I was going to make it back, or have to walk it in. 
7. 10:52 Surely I was going to run out of energy at this point...but the gel kicked in and I got a second wind. 
8. 10:52 Ok, staying consistent. 2/3 of the way there. 
9. 10:55 Around this time the sun came out so now it was hot AND humid. I knew at any time I was going to run out of gas. 
10. 11:04 Starting to feel the heat.  I made a bargain with myself. If I could run 5 minutes I would walk 30 seconds. This is also the point at which I had run the farthest since the marathon last May. 
11. 10:35 Run 5/walk 30 seemed to work really well! I still had enough juice to close this thing out. 
12. 10:56 It was hot, humid, and it was over!

A couple of other things I did differently today was, firstly, I wore my hydration backpack so I had PLENTY of water, and on a day like this that had to make a difference. Secondly, I put Nipguards on, and that made such a big difference compared to the last couple of weeks.  Once I get sweating, I don't stop and on my longer runs I started getting some chafing issues. All of this is why I much prefer run in 40 degree weather rather than the summer heat. So...hydration pack, Nipguards, gel packs and zombies. 12 miles, done!