Sore Back During Bike

You are likely too stretched out on your bike.  Both of my kids had very sore backs, when I initially had them on bikes that were basically too big for them, back when we were trying to see if they even liked riding/triahlons.  Once I bought them bikes that were fit for them all back issues disappeared immediately.

I was fitted for the bike when I bought it a couple of years ago, but it may be time for an adjustment. I'm sure I've tweaked the position of the aero bars once or twice since then. It's worth a shot anyways. thanks for the advice!

I actually make a point of standing up a few times throughout the ride, and include some minor stretches. I mentioned this to the massage therapist after my last race, and he said that it was important to do this. The fact is you are putting a lot of pressure on your lower back when you ride (at least this has been my experience).

Yep, time to go in for another fit! 2 years is a lot of time, I usually suggest one every 6 months. Just because you didn't tweek anything on the bike in 2 years, doesn't mean you physically didn't change over the last 2 years.

Also, with the longer riding, make sure you spend extra time stretching your hip flexors. They shorten when your on the bike, and if your like most people you spend tons of time sitting - at work, at home, in the car, etc... so all that leads to tight hip flexors which can cause back pain.

Good luck!