Burning back
Try some core strengthening exercises. Check your bike fit, you may have become more or less flexible since you were fitted on your bike. Next check your cleat position to ensure that you are tracking properly during your pedal stroke. Also check and see if you are favoring one leg. All I can say is after the ride or run ice and heat and maybe some Advil or Alleve.
Good Luck
Brett
Brett Daniels
USAT Level I Coach
www.thesportfactory.com
Thanks Bret - I do core strengthening 4 - 5 times a week. Think I'm okay there.
I did check my cleat position and alignment with the knee and that seemed correct.
And I do single leg pedalling - not as much now as I am not on the trainer, for most rides.
I have noticed that I do tend to tense my back up as I ride especially as I take hills - I have been trying to remain on the areobars and in the saddle for hills. Noticed that my arms were also tensed up quite a bit. I do pop up to the hoods when the grade does get high or out of the saddle to attack the crest.. I may need to do another bike fit as I was 6' 2" and 200 when I last had it done (last year) and am now 169 lbs - (still 6' 2" tho! :) ) Don't have any lingering issues after getting off the bike - able to run okay - so I was thinking it wasn't muscle but maybe nerve?
RV
It takes a long time to get good. - Scott Molina
Slow is smooth; smooth is fast. - Rich Strauss
I second what brett said start doing some core workouts it has really helped me. One more thing you might want to check out is stretching your hamstrings a lot I notice at times if my hamstrings are a little tight my lower back will bother me some. It's all connected.
PAIN IS TEMPORARY, PRIDE IS FOREVER!
Whether you think you can, or you think you can't you are right!


I have just recently started having an issue with my lower back on the bike. It occurs around 45 minutes into a ride. It is localized on the right lower back - and the only way to described it is as an intense burning sensation. I haven't made any position changes on the bike. Repositioning on the seat, getting out of areo position and up on the hoods makes little difference. The first time it occurred I eased way off on intensity and limped home after only 1.5 hours. Then felt okay when got off the bike and had no problems doing a transition run. Next day did a 3.5 hour ride. Again around 45 min it started - this time toughed it out and rode through it. It significantly lessened after about .5 hour - was still there but not too bad. Then the following day did a 5 hour ride same thing again. Probably not as intense, maybe as I was expecting it and was prepared to mentally push through it. Just wondering if this is common or not.
RV
It takes a long time to get good. - Scott Molina
Slow is smooth; smooth is fast. - Rich Strauss