You can totally do it!!!! First of all, STP is probably WAY flatter than the Cascade training rides. With your speed in the flats at this point, you will be fine. I wouldn't worry about your speed on the few hills. So long as you go fast enough to keep rolling up them, you will be fine!!!! Oh, and when you pass those men that are younger than you (and you will), you will find some inner energy to keep you going.
Day two was STP's worst kept secret for me. They don't seem to ever mention that there are many rollers and the highway in Oregon is very busy (wide shoulder). I mentally was not prepared for either, physically I was fine. Just letting you know so you won't be surprised by them. Oh, I suck at hills! I averaged 14 on the ride, which was my average on flats for training.
I have since learned to embrace hills. Make friends with them. I've improved greatly since taking a positive attitude vs neg. no more panic and fear. They are not the enemy! I can climb hills! I can climb hills, yes I can, so can you! Not yet ready to say I like them, maybe next year!
I was in so much fear of the hills prior to the STP that I rode the Napavine hill and drove the Puyallup hill!!! I did fine on both (slow and steady).
Get going on the clip less pedals. They are super easy. Clip in/out until it becomes second nature. You won't go back.
Also, remember --- this isn't a race. Your current speed is great and you will be getting faster. You will be so proud of yourself when you finish!
And enjoy the training too, it's half the fun. Can't wait for your post ride report (it's sorta a requirement)!



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