Hi Catrin,
My Coda (it's not the "Elite" one) is a 44 cm. It's the smallest bike I have ever had... I don't have the exact measurements of the tt, but I know that my other bike is 515. The Coda, while small, feels a bit long, but nothing so uncomfortable that I feel like I want to get rid of it. In fact, at times, I think I should have gone up to the next size, but that would probably be too big. The geometry just feels really different than any road bike I have had, or the mountain bike I just sold. It does feel a bit like the alu mountain bike I started riding on, which felt long, because it was a medium that had been rigged up for me to ride. The bike handles well, so I just chalk it up to the differences in a flat bar vs. a dropped bar bike.
2015 Trek Silque SSL
Specialized Oura
2011 Guru Praemio
Specialized Oura
2017 Specialized Ariel Sport