I can't remember the length- if I ever really knew it to start with. Start with a longish length and then see how much slack you have. Cut a foot or two off until you feel like it is right. If you use a single braid and haven't tapered it then cutting a few feet off at a time is no problem. The length of my halyard seems about right, but there are different ways to run the halyard of course. I have mine off the boat and could measure it- just give me another 2 weeks and I'll get back to you <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />