Originally Posted by
aniki
The head angle is 73º. The columbus fork has a rake of 35mm giving a trail of 67mm. The Enve fork has a rake of 43mm which gives a trail of 59mm.
The axle to crown measurement is identical for both forks.
Interestingly, this guy has mentioned that he preferred a higher trail / shorter wheelbase in contrast to the industry standard of a longer wheelbase with shorter trail.
Interestingly, the 59 mm of trail is actually is already on the upper-end of what you see in most modern era road bikes running 25s (which is usually something more like 55 to 60 with ~57 often held out a good compromise). However, the 69 mm of trail -- although not seen in road bikes nowadays -- would not have been as unusual to see on a ~50 year old touring frame.