Travel speed and range
From TemeraireWiki
Unfortunately a conclusive list of the dragon breeds in regard of their different speeds of travel as well as the distance they might be able to overcome in a day has not been published yet. The use of such would surely be immense, but undoubtedly a list of that kind would have to be a project of many scholars, as one alone would not be able to know the details of all the different breeds. It remains to be seen, when such a work might come to fruition, god willing it might be sooner than expected.