Three Routes Out: How to Build a Bug Out Route System That Actually Works

Why Your Single Bug Out Route Will Get You Killed

Most preppers have a bug out plan. Very few have a bug out route system. There's a critical difference. A plan that depends on one road, one bridge, or one highway is a plan built on a single point of failure — and in a real SHTF scenario, that single point will fail you. Roads flood. Bridges collapse or get blocked by panicked traffic. Law enforcement sets up checkpoints. Wildfires jump freeways in minutes. If you only have one way out of your area, you don't have a bug out plan — you have a prayer. Building a layered system of primary, secondary, and tertiary routes isn't paranoia. It's the minimum standard for anyone serious about getting their family out alive.

Understanding the Three-Route System

A three-route bug out system is exactly what it sounds like: three distinct, independently viable paths from your current location to your bug out destination. The key word is independently viable. Each route has to work on its own, without relying on the others. Here's how to think about each tier:

• Primary Route: Your fastest, most efficient path. This is typically the most direct road route — the one you'd use under relatively stable conditions where traffic is manageable and infrastructure is intact. You're moving a family, gear, and possibly animals. Speed matters. Efficiency matters. This route prioritizes getting you there fast while fuel and roads are still accessible.
• Secondary Route: Your backup when the primary is compromised. This route accepts a longer travel time — plan for 25 to 50 percent more distance or time than your primary — in exchange for avoiding the most heavily trafficked corridors. Secondary routes often use county roads, rural highways, or less-obvious connectors. They avoid population centers, major intersections, and choke points like single-lane bridges or mountain passes with no alternate crossing.
• Tertiary Route: Your last resort. This is typically non-vehicular or minimally vehicular — fire roads, hiking trails, waterways, or cross-country travel on foot or ATV. It's the route you use when civilization has completely broken down or when vehicle travel is no longer safe or possible. It's slow, it's hard, and it needs to be planned in detail precisely because you'll be under the most stress when you use it.

Each route should be mapped, scouted in person, documented in a physical map binder — not just saved on your phone — and rehearsed at least once a year. Digital maps fail. Paper doesn't.

How to Build Your Three-Route System Step by Step

1. Define Your Start Point and Destination FirstBefore you draw a single line on a map, lock in your origin and your destination. Your origin is likely your home, but also consider your workplace, your kids' school, and any secondary locations you frequent. Your destination is your bug out location — ideally a property you own or have formal permission to use, minimum 50 miles from your primary residence, preferably 100 or more. If you don't have a bug out location yet, that's a separate and urgent problem. For now, designate a fallback point: a trusted family member's rural property, a campground you know well, or a pre-identified wilderness area with water and shelter potential.
2. Get the Right MapsYou need two types of maps: road maps and topographic maps. For road planning, use state DOT maps at the county level — these show secondary roads that don't appear on most GPS systems. For terrain planning, use USGS 7.5-minute topographic maps at 1:24,000 scale. These show elevation, waterways, trails, and terrain features that will define your tertiary route. Order printed copies from the USGS store or print them from CalTopo. Keep them in waterproof map cases. Mark your routes in different colors — red for primary, blue for secondary, green for tertiary.
3. Identify Choke Points and Eliminate ThemA choke point is any location where your route narrows to a single option. Bridges are the most dangerous — if a bridge is the only crossing over a river on your route, that route is fragile. Identify every bridge, tunnel, mountain pass, and urban chokepoint on each candidate route. For each one, ask: what's my alternative if this is blocked? If there's no alternative within a reasonable detour, redesign the route. Your secondary and tertiary routes should have zero single-point failures.
4. Scout Every Route in Person — TwiceDrive your primary route on a weekday and again on a weekend. Note where traffic backs up, where road conditions deteriorate, and where alternate turn-offs exist. Do the same for your secondary route. For your tertiary route, walk or drive it as far as a vehicle can go, then hike the remainder. You're looking for water sources within every 5-mile stretch, areas of concealment, natural shelter, and any terrain features that would make night travel or adverse-weather travel dangerous. Take photos. Take notes. Add them to your route binder.
5. Establish Cache Points Along Each RouteA cache is a pre-positioned supply stash. At minimum, establish one cache at the midpoint of each route. A midpoint cache should contain: 5 gallons of treated water or a water filter rated for 1,000+ gallons (like a Sawyer Squeeze or Katadyn BeFree), 3 days of calorie-dense food per person (at least 2,000 calories per person per day — think Mountain House pouches, canned meat, peanut butter, and hard crackers), a basic first aid kit with Israeli bandages and a tourniquet, a backup fire kit (waterproof matches, a ferro rod, and a Bic lighter sealed in a bag), and a printed copy of the route segment ahead. Bury or hide caches in waterproof containers — 5-gallon buckets with gamma seal lids work well. Mark them on your physical map only. Not in your phone.
6. Build a Decision Trigger FrameworkKnowing your routes means nothing if you don't know when to switch between them. Build a simple decision tree. Trigger examples: if traffic on the primary route is backed up more than 2 miles at a known choke point — switch to secondary. If secondary is impassable due to flooding, law enforcement, or hostile activity — initiate tertiary. Write this down in plain language. Under stress, complex thinking fails. A laminated decision card in your glove box saves cognitive load when it matters most.
7. Plan for Vehicle Failure Mid-RouteYour tertiary route planning should assume you may have to abandon your vehicle at any point on your primary or secondary route and continue on foot. Know the straight-line distance from every 10-mile segment of your primary and secondary routes to your destination. Know which direction to walk. Know where water is. A 72-hour bug out bag per person, worn during the drive, is non-negotiable. Standard loadout: 3 liters of water minimum, water filter, 3 days food, fixed-blade knife (4- to 6-inch blade), fire kit, emergency bivy or tarp with 550 paracord, headlamp with extra batteries, first aid kit, and your paper maps.

Common Mistakes That Will Cost You When It Counts

• Relying on GPS and digital maps exclusively. Cell towers go down. Phones die. EMP events render electronics useless. Every route must be memorized in rough terms and documented on paper. Practice driving your primary route without GPS at least once. You'll be surprised what you've missed.
• Planning routes for ideal conditions only. Most preppers scout their routes in dry weather, in daylight, in a working vehicle. Reality check: you may be driving in a blizzard, in the dark, with a sick family member in the back seat. Scout in bad weather. Drive your routes at night at least once. Know where the road gets sketchy before it matters.
• Not accounting for family decision lag. In a real bug out scenario, getting five people out the door with their gear, the dog, and no arguments takes time. If your primary route depends on leaving within 15 minutes of a threat event, you're already behind. Build 45 minutes of cushion into your departure planning. Stage go-bags by the door. Run a quarterly bug out drill — time it. The goal is under 20 minutes from decision to vehicle moving.
• Ignoring seasonal route changes. A dirt road that's passable in August may be a river in March. A mountain pass that's clear in September is buried under 6 feet of snow in January. Map seasonal variations for each route. Have a winter variant and a wet-season variant for each tier. Note which routes require 4WD and under what conditions.
• No communication plan between vehicles or group members. If your group travels in multiple vehicles — which is often necessary — and you have no comms plan, one wrong turn splits your convoy permanently. At minimum, equip each vehicle with a GMRS radio (Midland GXT series are solid, under $50 a pair). Establish a channel and a fallback channel. Designate rally points every 20 miles on the primary and secondary routes. If a vehicle loses contact, they proceed to the next rally point and wait 30 minutes.
• Treating the tertiary route as an afterthought. Most preppers build a solid primary route, a decent secondary, and then vaguely wave their hand at the tertiary. The tertiary route requires the most detailed planning because it's used under the worst conditions. If you haven't hiked your tertiary route with your full pack in the last 12 months, it's not a plan — it's a fantasy.
• Not briefing every adult in your group on all three routes. If the primary driver is incapacitated, does your spouse know where to go? Does your 17-year-old? Every adult in your bug out group needs to be able to execute all three routes independently. Hold a map briefing. Walk through the decision tree. Make sure everyone can read the topo maps. Information siloed in one person's head dies with that person.

Do This Weekend

Pull out a paper road map of your county and the counties between you and your bug out destination. Mark your primary route in red. Now force yourself to build a secondary route that shares no roads with the primary for at least 70 percent of its length. Mark it in blue. Then identify the first 10 miles of your tertiary route — the stretch you'd walk if your vehicle was gone right now. Mark it in green. Drive the primary route Sunday morning without GPS. Time it. That's your baseline. Everything else builds from there. Get moving.