Home / Backpack size by trip length / six nights
6 nights · 7 days · 3 brand recommendations
What size backpack for six nights?
For six nights (seven days on trail), the brands' guidance runs 50–100 L. Gregory gives 60–100 L, Gossamer Gear points to its 50, 60 L packs.
- 1Top of range 100 L
- 2Bottom of range 50 L
- 3Trip 6 nights · 7 days
- 4Winter, Gregory +10–15 L
Each brand for six nights
| Brand | What it says | Volume |
|---|---|---|
| Gregory | Multi-Day Hike Remote (Baltoro & Deva); no night count given | 60–100 L |
| Gossamer Gear | 3 to 7-day trips | 50 L |
| Gossamer Gear | 7+ day trips | 60 L |
| All brands | no single volume every row shares | 50–100 L |
Guidance: Osprey backpack size guide; How to choose the perfect hiking backpack; What size backpack do I need for backpacking? (11 Mar 2026). Last checked 2026-10-20.
Why the brands differ for six nights
Gregory's "Multi-Day Hike Remote" row gives 60–100 L and says it fits bulky gear, 4-season tent, insulated cooking, extra food. Gossamer Gear builds lighter packs for hikers with pared-down kit, and its picks for seven days (50 and 60 L) sit at the low end of the span. Its own line: "When your gear is dialed in, 40 to 42 liters is more than enough for multi-day adventures."
In Osprey's trip-length categories this span covers Multi-Day Hikes, Extended Treks, Expedition Packs.
Adjusting the volume
- Winter: Gregory says to plan for an additional 10 to 15 litres, which turns this span into 60–115 L.
- Base weight: Gossamer Gear's question is "Is my base weight under 15 pounds or closer to 25?" A lighter, compact kit sits at the bottom of the range; bulky sleeping bags and tents at the top.
- Food and water: longer food carries, a bear canister or long dry stretches all push toward the top, per Gossamer Gear.
- Fit: Osprey: "The pack's back length should match your torso length rather than your height." Gregory: "Ideally, about 70% of the weight should rest on your hips, with the remaining 30% supported by your shoulders."
Shorter and longer trips
Five nights reads 50–70 L. Seven nights reads 60–100 L.
For six nights these are the brands' published starting points; how you pack decides where you land. See the methodology for how nights and days are matched.
Other gear
- Ski size by height
- Snowboard size by weight
- Kayak size by weight
- Paddleboard size by weight
- Bike size by height
Other trip lengths
a day hike · one night · two nights · three nights · four nights · five nights · seven nights · all trips
Guide: pack volume vs base weight · size every category at once