To make planning easier, ONDA divided the full 750-mile trail route into four regions and a total of 25 sections of 20 to 40 miles each, all of varying difficulty. Be advised! It is critical to read the guide descriptions in detail and seriously consider any notes on water scarcity or challenging terrain before setting out. Stretches of this trail are exceedingly remote. Make sure you are prepared and be certain to respect private property along the way. Choose a section below to learn more: Challenges & Risks, Desert Travel Tips, and Trail Resources all have extensive information to help you plan your trip.