Wauna Viewpoint and 18 Mile Run

Saturday it was blue skies and 50's for the first time in a long time, so I went hiking. It had been a year to the weekend from my last hike so my friend Kevin and I and my dog Spencer went to Wauna Viewpoint and started out slowly. After about a mile and a few hundred feet of climbing Spenser just stopped and looked around with his sides heaving. My poor guy is 11 and 1/2- 80 years old in human years. So we turned around and went back to the car having only hiked the bottom half without the viewpoint. Stopped in Cascade Locks to get a Diet Pepsi and the girl behind the counter gave me three dog biscuits for Spenser.
Then today four of us started in the morning cold (35) for an 18 miler. I wore shorts even though it was 35 because the weather report said 50-60's later. Ran and ran with lots of hills and ran out of Gatorade at 8 miles, so had to fill up with restroom tap water at a park, guess I need more than 2 bottles on my belt. At around 12 miles we were on a road in the open and it was around 60 degrees, so I shed one of my two shirts and hid it behind an electric box and picked it up later. At around 15 miles I was done for and had to walk up a hill- did an Ironman last year and didn't walk. The others came back to get me going but I could only muster an 11 or so pace, but finished running the rest of the way and did my longest run since the Ironman in September. Next week- 20 miles!