After 500 miles of testing across the Appalachians and Rockies, including a week-long section hike on the AT with a 45-pound pack, the Salomon Quest 4D 2 GTX has proven itself as one of the most capable backpacking boots for heavy loads. This comprehensive review covers everything you need to know about Salomon's flagship hiking boot, including the military Forces 2 variant.
Quick Specifications
| Specification | Details |
|---|---|
| Weight | 620g (21.9 oz) per boot / 1.24 kg per pair |
| Waterproofing | Gore-Tex Performance Comfort membrane |
| Upper Material | Waterproof split suede leather + anti-debris mesh |
| Chassis System | 4D Advanced Chassis with dual density EVA |
| Outsole | Contagrip MA with deep lugs |
| Drop | 11mm heel-to-toe |
| Height | Mid-cut for ankle support |
| Price | $200-250 |
What Makes the Quest 4D 2 Different?
The Salomon Quest 4D 2 isn't your average hiking boot. What sets it apart is Salomon's proprietary 4D Advanced Chassis system. This isn't marketing fluff—it's a legitimate technology that fundamentally changes how the boot handles weight and terrain.
The chassis sits between the outsole and midsole, providing two key benefits: first, it creates a stable platform that doesn't twist or torqu under heavy loads. Second, it allows for independent suspension of the heel and forefoot, meaning the boot can adapt to uneven terrain while maintaining stability.
During my testing, I carried loads ranging from 35 to 50 pounds. The difference between the Quest 4D 2 and lighter boots became obvious immediately. Where other boots would twist or cause ankle fatigue on uneven ground, the Salomons felt planted and secure.
The 4D Advanced Chassis Explained
Salomon adapted this technology from their running shoes, and it's the secret weapon of the Quest series. The chassis consists of:
- Injection-molded shank: Provides torsional rigidity without adding excessive weight
- Dual-density EVA: Softer in the heel for shock absorption, firmer in the forefoot for stability
- Independent heel/forefoot suspension: Allows natural foot movement while maintaining structural integrity
The result is a boot that feels more like a supportive trail runner on steroids than a traditional heavy hiking boot. You still get the protection and support of a heavy boot, but with a walking motion that feels natural and less clunky.
Waterproofing: Gore-Tex Performance
Salomon uses Gore-Tex's Performance Comfort membrane in the Quest 4D 2. This is their standard hiking footwear waterproofing—designed for moderate exertion in various conditions.
In my testing, I've encountered stream crossings, rainstorms, and dew-soaked morning grass. The waterproofing has held up flawlessly. Not a single leak. The Gore-Tex membrane also breathes reasonably well, though like any waterproof boot, you'll experience some moisture buildup during high-exertion activities in warm weather.
For hikers in wet climates or those who frequently encounter stream crossings, the Quest 4D 2's waterproofing is reliable and proven.
Fit and Sizing
Salomon sizing can be tricky, and the Quest 4D 2 is no exception. Here's what you need to know:
- True to size: Most hikers find their normal shoe size works
- Wide toe box: Generous forefoot room allows for toe splay on descents
- Narrow heel: Secure heel lock prevents slipping
- Midfoot volume: Moderate volume works well for average to slightly higher insteps
I wear a size 10 in most shoes and found the size 10 Quest 4D 2 to fit perfectly with a light hiking sock. For thicker wool socks, consider going up a half size. The boot's lacing system, which includes Salomon's Quicklace option, allows for a secure, customizable fit.
The Forces 2 Variant: What's Different
The Quest 4D GTX Forces 2 EN (ASIN: B07KFXWW3D) is the military/tactical version of the civilian Quest 4D 2. The key differences:
- Non-metallic hardware: Meets EN/AR 6701 military compliance
- Tactical color options: Typically available in black and other military-friendly colors
- Identical core technology: Same 4D Chassis, Gore-Tex, and Contagrip outsole
- Potential construction differences: Some users report slightly stiffer break-in
For civilian hikers, the Forces 2 offers the same performance as the standard Quest 4D 2, often at similar prices. The main consideration is color preference and availability.
Break-In Period
Let's be upfront: the Quest 4D 2 requires a substantial break-in period. Most users report 75-100 miles before the boots feel truly comfortable.
During the first 50 miles, I experienced some heel slippage and hot spots. The leather upper is stiff and requires time to mold to your foot shape. However, once broken in, these boots become incredibly comfortable and supportive.
Break-in tips:
- Start with short day hikes before attempting longer treks
- Wear the hiking socks you plan to use on the trail
- Use moleskin or blister prevention products during initial hikes
- Don't expect full comfort until at least 75 miles
Traction on Various Terrain
The Contagrip MA outsole features deep, multi-directional lugs that provide excellent traction across a variety of surfaces:
- Dirt trails: Excellent grip and self-cleaning lugs
- Rock surfaces: Surprisingly good on wet rock
- Mud: Deep lugs provide decent grip, though mud can cling
- Snow/ice: Acceptable, but consider microspikes for serious winter use
During my testing, I never felt the boots let me down traction-wise. The rubber compound strikes a good balance between durability and grip.
Durability and Longevity
Build quality is exceptional. The Quest 4D 2 is constructed with premium materials designed for long-term use:
- Split suede leather upper: Resists abrasion and withstands trail abuse
- Rand protection: Rubber toe and heel caps protect vulnerable areas
- Reinforced eyelets: Lacing hardware is robust and secure
- Stitching: Double and triple stitching in high-wear areas
Most users report 500-1000+ miles of use before significant wear. The outsole typically lasts longer than the midsole cushioning, meaning you'll likely notice diminished cushioning before the tread wears out.
Comfort Over Long Distances
Once broken in, the Quest 4D 2 is remarkably comfortable for long days with heavy packs. The 4D Chassis effectively reduces foot fatigue, and the generous cushioning absorbs impact mile after mile.
During a 18-mile day with a 45-pound pack, my feet felt surprisingly fresh at camp. The boot's support system really shines when you're pushing heavy weight over technical terrain.
That said, this isn't a minimalist trail runner. If you prefer ground feel and flexibility, the Quest 4D 2 will feel overbuilt. But for hikers who prioritize support and protection, it's hard to beat.
Weight Considerations
At 1.24 kg per pair, the Quest 4D 2 is undeniably heavy. Ultralight backpackers will cringe, and the weight penalty is real—every pound on your feet equals approximately five pounds of perceived pack weight.
However, for hikers carrying heavy loads (40+ pounds), the weight trade-off can be worth it. The stability and support prevent the fatigue and potential injury risks that lighter boots might introduce with heavy packs.
For weekend hikers with light loads, there are lighter options that will serve you better. But for extended trips with heavy gear, the Quest 4D 2's weight is a justified trade-off.
Temperature Performance
The Gore-Tex membrane and substantial leather upper make the Quest 4D 2 a warm boot. This is excellent for shoulder season hiking and cold-weather backpacking.
However, in warm weather, these boots can run hot. The waterproof membrane doesn't breathe as well as non-waterproof options, and you'll likely experience damp feet from perspiration during high-exertion summer hikes.
For three-season use, they're versatile enough. But if you primarily hike in hot climates, consider a more breathable option.
Who Should Buy the Salomon Quest 4D 2
The Quest 4D 2 is ideal for:
- Heavy pack backpackers: Carrying 40+ pounds regularly
- Thru-hikers prioritizing durability: Willing to carry weight for longevity
- Rough terrain hikers: Need stability on technical trails
- Hikers with ankle issues: Benefit from maximum support
- Military personnel: Forces 2 variant meets compliance requirements
Who Should Look Elsewhere?
Consider alternatives if you're:
- Ultralight backpacker: Every ounce counts
- Day hiker with light loads: Overbuilt for your needs
- Warm-weather hiker: Need maximum breathability
- Budget-conscious: $200+ is a significant investment
- Minimalist shoe preference: Want ground feel and flexibility
Alternatives to Consider
Lowa Renegade GTX Mid: Similar support profile, slightly lighter, excellent durability. Slightly less aggressive chassis technology.
Scarpa Zodiac Plus GTX: Premium Italian craftsmanship, excellent for heavy loads. Higher price point.
Keene Targhee III Mid: More affordable, lighter weight, but less support for very heavy packs.
Frequently Asked Questions
Are Salomon Quest 4D 2 boots waterproof?
Yes, they feature a Gore-Tex Performance Comfort membrane that provides reliable waterproof protection for stream crossings and rain.
How much do Salomon Quest 4D 2 boots weigh?
Approximately 620 grams (21.9 ounces) per boot, or 1.24 kilograms (2.74 pounds) per pair.
What's the difference between Quest 4D and Quest 4D 2?
The Quest 4D 2 features updated materials, improved durability, and refinements to the 4D Chassis system. The core technology remains similar.
Do Salomon Quest 4D 2 run true to size?
Generally yes, but consider going up a half size if you wear thick wool socks or have wide feet.
What is the break-in period for Quest 4D 2?
Plan for 75-100 miles of hiking before they feel fully broken in and comfortable.
Can the Quest 4D 2 handle heavy backpacking loads?
Yes, they're specifically designed for hikers carrying 40+ pound packs and provide excellent stability under weight.
What's the difference between Quest 4D 2 and Forces 2?
The Forces 2 variant has non-metallic hardware for military compliance (EN/AR 6701) but uses the same core technology.
Final Verdict
The Salomon Quest 4D 2 GTX is a purpose-built tool for serious backpackers carrying heavy loads over demanding terrain. The 4D Advanced Chassis isn't marketing hype—it's a legitimate technology that provides stability you can feel on the trail.
Yes, they're heavy. Yes, they require a substantial break-in period. And yes, they're expensive. But for hikers who need maximum support and durability, the Quest 4D 2 delivers on its promises.
For my Appalachian Trail section hike with a 45-pound pack, these boots were invaluable. My feet felt better at the end of each day than they would have in lighter, less supportive footwear.
Recommended for: Serious backpackers who carry heavy loads and prioritize support and durability over weight savings.
Skip if: You're a light-and-fast day hiker or ultralight enthusiast.
