Go or No Go

I am in a dilemma right now. I am interested to go for MR25 Ultra Marathon this Sunday.

But I am not sure if I am ready for it.

Two main reasons I gave myself why I should go.
1) Nike Finisher T
2) Bragging Rights

In fact, I guess the real reason why I wanted to go for the race is Self Actualisation.

This year, I have opted out of City Duathlon and SCSM Full Marathon.
My reasoning is that I have not completed the shorter distances comfortably, thus I was not too sure how I will fare during the races.
Guess I am just shrinking away from challenges.

If I can complete the race this Sunday, I believe it will give me the much needed confidence that I need for my future races.