There is nothing wrong with a metric century..did one last weekend and I was tired and mildly unfocused by the end. It was very hilly and very hard work! Good for you! You'll set your goals to finish the next one!

I echo the comments before me..to do hills ya gotta do hills. It's not only physical work, but it is also important mentally. That is where some of the greatest battles are fought!

As for advice from the DH... My DH is a physio and pretty fit..thinks he knows all there is to know about training..poo-pood my trainer/coach. That is until I improved my run time greatly from my first du to the 2nd! I let him give me advice on core work. And he's my healer...but the guy that tells me how to train is my coach. I never would have pushed myself that hard; I feel accountable to him and myself. And I remain injury free. (except for a hamstring pull due to hockey...ya, us Canucks and our hockey... )