Distances covered?

hippy Furnace Creek 508 is a famous ultra endurance ride in the US that has a fixed option: http://epictrain.blogspot.com/2007/10/furnace-creek-508-fixed-gear-solo-race_17.html

fixedwheelnut and quite a few audaxers ride fixed for long distances. There's not limit really, assuming you get along with your bike of choice.

The Furnace Creek 508 was very difficult for me on a fixie. It has 508 mile and 35,000 feet of climbing (817km and 10,668 meters). In many respects it was harder than Race Across America (RAAM) when I did that as a two person team. The full race report is here [quote][cite]

http://epictrain.blogspot.com/search?updated-min=2007-01-01T00%3A00%3A00-08%3A00&updated-max=2008-01-01T00%3A00%3A00-08%3A00&max-results=42