In Colorado the length of your separation doesn't make it any more difficult to get a divorce than if you were still living together. The only difference is that if you cannot locate him to serve the necessary papers, the court can authorize you to give him notice of the proceedings by publication in a local newspaper. That will permit the court to enter a divorce, but it won't be able to do anything about property or financial issues. If you have lived apart and with no contact for more than 20 years it seems unlikely there would be any property or financial issues that you would care about. But, you cannot legally remarry until you are divorced, so you need to start the process. You should consult an attorney for more detailed advice, even if you eventually decide to pursue things on your own.
Answered on Sep 19th, 2011 at 3:31 PM