This is dumb, but I properly inflated my tires and I'm now going the same speed as on my trainer!
I never rode a road bike. I've always used our city bike to go around or had a T-bar/suspension bike.
After training the whole winter on a standing trainer, it was about time to do some practice rides outside. Last week I did a 20km but could barely go at 23 km/h, while on the trainer I could be at 30 km/h. It was hard, but I shrugged it off as the trainer not being accurate and me being weak.
Well, I started reading about bicycle tire pressure and found a pressure calculator. It said I should ride at 90-100 psi. I was riding at 40psi!!!! I still couldn't trust 90, so I inflated them to 80 psi. But Oh man, I went out today and I went flying! Did 40km. Hit my cruise speed of about 28-30km/h without much struggle! I may try 90psi later but I feel the ride may not be comfortable..
Anyway, little story of a newbie! I'm excited for my first 70.3 now !!!
The tire Silca tire pressure calculator for the curious ones