Hey Expert Girls,

I'm signed up for an Oly. No question that I can make it, but if I'm really good on the day, I can be under 3h - 33min swim, 1:27 bike, 55min run plus transitions makes 2:59(:59....).

To make those 1:27, I'll have to really put the hammer down on 2 climbs between km 10 and 20, after which there's a descent and a flat few kms towards the end of the course.
I test rode the two hills saturday. I had the necessary average but had some lactate build up in my legs, and HR spiked. Then again, I had a similarly high average HR on my last tri with a 40K bike leg and I could still run.

Am I risking blowing up? (then again there's nothing I can do but tri, eh try... - If I blow up, it'll be 3:10ish and I still won't be last)