I was a bit worried about the second run as I'd read that some people found it harder than the first. I followed all the advice: make the walk as brisk as possible, regulate breathing, don't run too fast. And it worked ... so well I thought I'd really have a go at running on the second to last run. Whoops! I nearly passed out when I slowed down to a walk!
Still, I did it and can't wait to do it again. I think this really might work - as long as I don't think ahead to the longer runs.
But my legs really are killing me. I've done some calf and quad stretches. Any other advice?