South St Vrain Creek trail (expert riders only) Singletracks Mountain Bike News, Product Reviews, MTB Trails and Community › Protected: Forums › Mountain Bike Forum › South St Vrain Creek trail (expert riders only) Tweet Add to Flipboard Magazine. Viewing 1 reply thread Author Posts September 21, 2006 at 08:22 #69769 MarkZahn Anyone ever do this trail? http://www.leelikesbikes.com/Stories/061304/ I couldn’t find it on Singletracks.com. I did find "Sourdough Trail" but is that the same? September 21, 2006 at 09:25 #69770 dauw Sourdough and S. St. Vrain are considered separate trails in most guide books. I’ve ridden Sourdough, and it is much better ridden south mostly downhill as there are plenty of loose rocky sections. South St. Vrain is on the ‘To Do’ list. 😀 Author Posts Viewing 1 reply thread You must be logged in to reply to this topic.