Total time of 1:35:00. I know that I ran over 12 miles, just not sure by how much.
TLDR: 1.25 miles in 8:00 during the first half, and 2 miles in 11:42 during the second half.
Full Version: I ran South until I hit the Murdock canal trail and started running West on the trail. I had to use the bathroom, and knowing that the closest bathroom was a fair way down the trail I decided to speed up in order to decrease the amount of time spent running with stomach cramps. I timed 1.25 miles on the trail in 8:00 (1:37, 1:35, 1:32, 1:41, 1:35). This didn't feel particularly hard, and would have been faster except I had to slow down during the fourth quarter due to stomach cramps. After using the bathroom I continued down the trail until I hit 47:30 on my watch at which point I turned around to head back home.
I started a 2 mile tempo about 30 second after turning around. The first quarter had a lot of steep uphill in it (1:36), followed by a flat second quarter (1:26), and a third quarter that was probably net downhill with a downhill beginning and uphill finish (1:23). The fourth quarter started uphill before flattening out eventually (1:30), followed by mostly flat fifth and sixth quarters (1:26, 1:26), and what felt like a very mild uphill for the last two quarters (1:29, 1:26), and a total time of 11:42 (5:55, 5:47). Edit: I checked the elevation change on the course tool, and I had an estimated net gain of 49 ft for the 2 miles, 43 ft during the first mile, and 6 ft during the second mile. The timed 1.25 mile stretch on the way out which coincided with the last 1.25 miles of the second half's tempo had a net loss of 19 ft.
I then finished the run running back up to the house and arriving in 1:34:48 and jogging a circle around the round about to finish off my run in 1:35:00. I felt stiff after finishing the tempo run, which has been a consistent theme for me lately, and the last 4+ miles were pretty slow (over 8:00 pace). I'm not sure what the problem is, I just know that I have frequently felt stiff lately, especially if I have been sitting/lying down, and at the beginning of my runs (less frequently at the end of my run as happened today). Depending on how I feel next week I may take an easy week where I only run 60ish minutes per day (plus my planned "long" run of 1:40:00 as I don't want to cut that short) instead of the planned 82 minutes per day.