Mountain biking in sand is a skill that flusters a lot of riders. On my first trip to Moab in 1990 I really struggled with it and it wasn’t until MTB Legend Missy “the Missile” Giove gave me some tips on mountain biking in sand that I figured it out. It is especially hard on flat ground when you have to maintain your momentum or worse yet on an uphill. If you struggle with riding in sand check out this video tutorial for some help:
An important thing I left out of the video, when riding in sand don’t try to be absolutely precise with your line. As long as you are basically going where you want to go you are doing fine! I call this “fuzzy navigation”, just keep looking where you want to go and making the smallest corrections possible! Any sudden attempt to change direction will end up with your tire crabbing and you stalling out. This includes trying to turn in sand which is nearly impossible. Ideally make you turn (or at least part of it) before the sand and after the sand. If you do have to turn in sand make the biggest, most gradual arc you can.
Mountain Biking in sand, coasting
Going downhill and/or coasting in sand is a little easier. When transitioning from a hard surface like rock or hard packed trail to sand there are few concerns, mainly making sure your bike doesn’t stop while you keep going! Here is a second mountain biking in sand video on how to transition to sand at speed:
Of course, these are two minor skills compared with mastering the fundamentals of mountain biking which sadly few mountain bikers have. Until you are always in the right body position and always looking at least 3-5 seconds ahead (100% of the time, even on the gnarliest trail) most skills and tips like this have little value. Remember knowledge is worthless without action!