Great plate Jen. Been looking for something like that for a while!
Because I am so good to people on here I went out and tested conditions over 21 miles this morning. Ran at 10am and wore a vest and shorts. Light breeze was really nice and it was pretty much ideal conditions for a marathon.
I covered them at 8:10mm and they were very hilly. That's my last long run (well over 20 miles) completed and legs felt very strong although I was pretty thirsty in the last 5 or 6 miles after a very long climb of 3 miles. I ran without water!!!
If you get conditions like these tomorrow Malcs/Sarah you will be fine. I sweated a lot because it felt a lot warmer than I've been used to but just a drink every now and then would have made all the difference.
Sarah - the wind should be at your back for the last 7 or 8 miles pretty much - all the way back along the embankment at least.
Go crack it!!!!