The Duffel Case for Bikepacking: Why a 70L Trail Bag Beats a Seat Pack for Most Tours
By: Wildhorn OutfittersA seat pack looks sharp on singletrack. Most bikepacking tours roll over gravel roads, rail trails, and forest service routes. That changes the bag math, and the duffel wins. A duffel strapped to a rear rack gives you one wide opening, a simple shape, and enough volume for camp gear, food, and tools.
I ride the same mountain roads where Wildhorn Outfitters designs gear in Utah. I have packed bikes for desert dirt roads, high alpine gravel, and rainy forest service routes. Back before seat packs took over the look, riders lashed canvas duffels to rear racks and rolled out. That method never disappeared. A low seat pack looks efficient. A 70L duffel looks practical. Practical wins when you are 50 miles from town and the temperature drops.
Two Duffels That Do the Job
Wildhorn Outfitters builds two duffels for mountain bike travel. The Gulch 70L Bike Duffel holds a tent, sleeping bag, pad, cook kit, food, and a change of clothes with room to spare. I would choose it for a two- to three-day tour. It is also the bag I would hand a first-time bikepacker who does not want a separate bag for every job.
The Big Mesa 90L Bike Duffel covers longer trips, cold-weather tours, or riders carrying for a partner. The extra 20 liters means you can pack a puffy jacket, extra layers, and a bigger tent without crushing your food into a single stuff sack. Both bags carry Wildhorn's Limited Lifetime Warranty. That warranty matters because a bikepacking bag takes gravel spray, rain, dust, and the occasional low branch. You ride harder when you do not flinch at every scrape.
70 Liters or 90 Liters
Choose 70L if you pack a compact sleep system and mostly ride two- to three-night trips. Choose 90L if you ride cold months, carry a larger tent, or pack for a partner. A bag that is slightly too big works better than one that is slightly too small. You can compress soft gear inside. You cannot stretch a bag that is already full.
Pack It Like a Backpacker
Load the heavy stuff first. A fuel canister, a repair kit, and a water filter sit low and centered against the bottom of the bag, closest to the rack. That keeps the bike stable on loose climbs. Put your sleep system in a dry bag or compression sack inside the duffel. Layer clothes and food on top. The last item in should be the first item you need at camp: a headlamp, a puffy, or a stove.
Leave about ten percent of the bag empty when you start. You will buy food, pick up an extra layer, or stuff a wet tent in half-packed. An empty pocket of space makes a duffel forgiving. A stuffed seat pack is not forgiving at all.
My standard three-day load for the Gulch 70L looks like this:
- Sleep kit: tent body, fly, stakes, sleeping bag, pad
- Cook kit: stove, 100g canister, spork, mug, lighter
- Clothes: one riding kit, one camp base layer, puffy, rain shell, spare socks
- Repair and safety: tube, sealant, multi-tool, pump, first aid, headlamp, water filter
- Food: two breakfasts, three lunches, two dinners, snacks, electrolytes
That list leaves empty space for a resupply stop. You can pack like a backpacker and skip the three-bag setup for a two-day trip.
Strap It Down
Use two or three wide straps. Cross them over the top and cinch tight. After the first hour, stop and re-tighten. Gravel roads shake everything loose. After a rough descent, check again. The straps matter more than the bag.
If your rack has low rails, add a third strap around the middle to stop the bag from sliding sideways. Use straps with buckles, not bungee cords. Bungees stretch and let the bag shift over washboard. A duffel is also easier to carry into a tent or a motel room at night. That matters after a long day.
When a Seat Pack Still Makes Sense
Some routes call for a seat pack instead of a duffel. Tight singletrack with rock gardens and narrow tree gaps favors a low center of gravity and a bag tucked behind the seat. The duffel shines on gravel, dirt roads, rail trails, and forest service routes. That covers most multi-day tours in the mountain West.
Seat packs have their place. For the routes I ride most often, a duffel makes packing easier and camp life faster. You can open one zipper and see everything. You can pull out a tent without unstrapping a harness. You can pack in the dark without a headlamp because the opening is the size of the bag.
The Short Version
Stop treating the seat pack as the default. For most bikepacking tours, a duffel strapped low and tight is easier to pack, easier to access, and easier on your budget. You need one solid duffel, a dry bag for your sleep kit, and two wide straps.
Grab the Gulch 70L Bike Duffel for weekend tours or the Big Mesa 90L Bike Duffel for longer hauls. Then go ride a dirt road until it turns to gravel and the pavement feels far away.
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