Where is your audience? Web forums/message boards related to your niche, niche-relevant/high traffic blog comments, quora, yahoo answers, and reddit are all great places to drive targeted traffic to your high quality content. Press releases, guest posts, and cross-blogging are great ways to actually distribute the content. If it's newsworthy, you might want to check out HARO (help a reporter out). If the content is evergreen and can provide value to readers over a long time, then you may want to post it on your own site and rank it for its main key.