Why choose Cascadia 18?Buy Cascadia 18 if
+1.5 Weight Efficiency+1.5 Weight Efficiency: Better measured rating in wear-test consensus.
Head-to-Head Comparison·Lab Telemetry
Brooks · Trail
WINNER
Cascadia 18
80
Stack33mm
Weight314g
Drop8mm
La Sportiva · Trail
Akasha II
75
Stack31mm
Weight310g
Drop6mm
Key Differences & Advantages
Nothing decisively wins on this side — check the fit consensus.
The Runner's Pick
Final Decision: Who Buys Which Model?
Side-by-side selection criteria grounded in verified mechanical specs
Brooks
Cascadia 18
80
Choose the Cascadia 18 if:
Choose the Cascadia 18 if your priority is an ultralight chassis with effortless turnover powered by DNA LOFT v2 EVA blend with Trail Adapt system (314g). It is the better match for runners targeting minimizing leg fatigue across late-mile splits over the Akasha II's focus on neutral support and surefooted stride containment.
8mm drop · 314g · $140Audit
La Sportiva
Akasha II
75
Choose the Akasha II if:
Choose the Akasha II if your priority is heavy-duty outsole coverage and resilient midsole longevity powered by Dual-injection shock-absorbing MEMlex EVA with Cushion Platform (310g). It is the better match for runners targeting logging 400+ grueling training miles without early breakdown over the Cascadia 18's focus on high-mileage protection and low-impact recovery cruising.
6mm drop · 310g · $175Audit
Dealbreaker Warnings · Who Should Skip These
Critical biomechanical trade-offs to avoid buying the wrong shoe
Brooks Cascadia 18
Skip Cascadia 18 if your mileage includes paved asphalt or concrete; aggressive 4.5mm lugs wear rapidly on hard surfaces and cause harsh ground shock.
La Sportiva Akasha II
Skip Akasha II if your mileage includes paved asphalt or concrete; aggressive 4.5mm lugs wear rapidly on hard surfaces and cause harsh ground shock.
8-Axis Telemetry Radar
Cascadia 18 leads by +5.0 PTS
Cascadia80vsAkasha75
Tap any axis node to inspect wear-test citations
🔬 Inspect Granular Lab Specs & Fit Telemetry▼
Fit & Sizing Consensus
Real-world wear-test consensus across runner foot profiles
Cascadia 18
Akasha II
Sizing LengthSizing differs
Runs Small
Akasha78%
True to Size
Cascadia85%
Runs Large
Cascadia 18: True to size(n=32)
Akasha II: Runs small — consider 0.5 size up(n=28)
Toe Box WidthMatch
Performance Tight
Standard
Cascadia74%Akasha74%
Wide
Cascadia 18: Standard width(n=28)
Akasha II: Standard width(n=24)
Arch SupportMatch
Flat / Low
Neutral Stability
Cascadia76%Akasha76%
High Arch
Cascadia 18: Neutral stability / moderate arch(n=24)
Akasha II: Neutral stability / moderate arch(n=20)
| RADAR AXIS | Cascadia 18 | Akasha II | Δ DELTA | COHORT RANK |
|---|---|---|---|---|
| Cushioning & Softness | 7.6 | 7.3 | +0.3 (Cascadia 18 higher by 0.3) | #8/28 |
| Energy Return & Bounce | 6.2 | 6.2 | 0.0 (dead even) | #8/28 |
| Weight Efficiency | 6.6 | 5.1 | +1.5 (Cascadia 18 higher by 1.5) | #8/28 |
| Stability & Support | 8.8 | 8.3 | +0.5 (Cascadia 18 higher by 0.5) | #8/28 |
| Traction & Grip | 8.6 | 8.4 | +0.2 (Cascadia 18 higher by 0.2) | #8/28 |
| Upper Comfort & Lockdown | 8.2 | 7.3 | +0.9 (Cascadia 18 higher by 0.9) | #8/28 |
| Breathability | 7.6 | 6.3 | +1.3 (Cascadia 18 higher by 1.3) | #8/28 |
| Durability | 8.6 | 8.6 | 0.0 (dead even) | #8/28 |
| Meta-Score | 80contender | 75average | +5.0 | Calibrated |
The Record · Specification Telemetry
Cohort-relative percentiles and verified technical specs
Cascadia 18
Akasha II
Weight (US Men's 9)Lighter than 55% of daily trainers
Cascadia 18314g
Akasha II310g
›La Sportiva Akasha II saves 4g per stride, noticeable after mile 6 of continuous running.
Heel Cushion StackMore underfoot foam than 45% of trainers
Cascadia 1833.0mm
Akasha II31.0mm
›Brooks Cascadia 18 delivers 2.0mm more vibration isolation for long recovery efforts than Akasha II.
Heel-to-Toe DropΔ 2.0mm
Cascadia 188.0mm
Akasha II6.0mm
›Cascadia 18's 8mm drop shifts load toward the knees/quads, while Akasha II's 6mm drop engages the Achilles and calves.
Midsole Foam & Energy ReturnHigher rebound than 63% of tested foams
DNA LOFT v2 EVA blend with Trail Adapt system6.2/10
Dual-injection shock-absorbing MEMlex EVA with Cushion Platform6.2/10
›DNA LOFT v2 EVA blend with Trail Adapt system yields a springier, high-rebound toe-off compared to Dual-injection shock-absorbing MEMlex EVA with Cushion Platform's grounded, stable feel.
Outsole Durability & TractionTougher rubber than 90% of road shoes
TrailTack Green rubber with 4.5mm lugs and rock shield8.6/10
FriXion Red dual-compound rubber with Trail Rocker8.6/10
›Cascadia 18 utilizes TrailTack Green rubber with 4.5mm lugs and rock shield compound formulated for extended 500+ mile abrasive asphalt longevity.
Fit & Sizing Consensus
Real-world wear-test consensus across runner foot profiles
Cascadia 18
Akasha II
Sizing LengthSizing differs
Runs Small
Akasha78%
True to Size
Cascadia85%
Runs Large
Cascadia 18: True to size(n=32)
Akasha II: Runs small — consider 0.5 size up(n=28)
Toe Box WidthMatch
Performance Tight
Standard
Cascadia74%Akasha74%
Wide
Cascadia 18: Standard width(n=28)
Akasha II: Standard width(n=24)
Arch SupportMatch
Flat / Low
Neutral Stability
Cascadia76%Akasha76%
High Arch
Cascadia 18: Neutral stability / moderate arch(n=24)
Akasha II: Neutral stability / moderate arch(n=20)
The Record · Specification Telemetry
Cohort-relative percentiles and verified technical specs
Cascadia 18
Akasha II
Weight (US Men's 9)Lighter than 55% of daily trainers
Cascadia 18314g
Akasha II310g
›La Sportiva Akasha II saves 4g per stride, noticeable after mile 6 of continuous running.
Heel Cushion StackMore underfoot foam than 45% of trainers
Cascadia 1833.0mm
Akasha II31.0mm
›Brooks Cascadia 18 delivers 2.0mm more vibration isolation for long recovery efforts than Akasha II.
Heel-to-Toe DropΔ 2.0mm
Cascadia 188.0mm
Akasha II6.0mm
›Cascadia 18's 8mm drop shifts load toward the knees/quads, while Akasha II's 6mm drop engages the Achilles and calves.
Midsole Foam & Energy ReturnHigher rebound than 63% of tested foams
DNA LOFT v2 EVA blend with Trail Adapt system6.2/10
Dual-injection shock-absorbing MEMlex EVA with Cushion Platform6.2/10
›DNA LOFT v2 EVA blend with Trail Adapt system yields a springier, high-rebound toe-off compared to Dual-injection shock-absorbing MEMlex EVA with Cushion Platform's grounded, stable feel.
Outsole Durability & TractionTougher rubber than 90% of road shoes
TrailTack Green rubber with 4.5mm lugs and rock shield8.6/10
FriXion Red dual-compound rubber with Trail Rocker8.6/10
›Cascadia 18 utilizes TrailTack Green rubber with 4.5mm lugs and rock shield compound formulated for extended 500+ mile abrasive asphalt longevity.
| RADAR AXIS | Cascadia 18 | Akasha II | Δ DELTA | COHORT RANK |
|---|---|---|---|---|
| Cushioning & Softness | 7.6 | 7.3 | +0.3 (Cascadia 18 higher by 0.3) | #8/28 |
| Energy Return & Bounce | 6.2 | 6.2 | 0.0 (dead even) | #8/28 |
| Weight Efficiency | 6.6 | 5.1 | +1.5 (Cascadia 18 higher by 1.5) | #8/28 |
| Stability & Support | 8.8 | 8.3 | +0.5 (Cascadia 18 higher by 0.5) | #8/28 |
| Traction & Grip | 8.6 | 8.4 | +0.2 (Cascadia 18 higher by 0.2) | #8/28 |
| Upper Comfort & Lockdown | 8.2 | 7.3 | +0.9 (Cascadia 18 higher by 0.9) | #8/28 |
| Breathability | 7.6 | 6.3 | +1.3 (Cascadia 18 higher by 1.3) | #8/28 |
| Durability | 8.6 | 8.6 | 0.0 (dead even) | #8/28 |
| Meta-Score | 80contender | 75average | +5.0 | Calibrated |
The Runner's Pick
Final Decision: Who Buys Which Model?
Side-by-side selection criteria grounded in verified mechanical specs
Brooks
Cascadia 18
80
Choose the Cascadia 18 if:
Choose the Cascadia 18 if your priority is an ultralight chassis with effortless turnover powered by DNA LOFT v2 EVA blend with Trail Adapt system (314g). It is the better match for runners targeting minimizing leg fatigue across late-mile splits over the Akasha II's focus on neutral support and surefooted stride containment.
8mm drop · 314g · $140Audit
La Sportiva
Akasha II
75
Choose the Akasha II if:
Choose the Akasha II if your priority is heavy-duty outsole coverage and resilient midsole longevity powered by Dual-injection shock-absorbing MEMlex EVA with Cushion Platform (310g). It is the better match for runners targeting logging 400+ grueling training miles without early breakdown over the Cascadia 18's focus on high-mileage protection and low-impact recovery cruising.
6mm drop · 310g · $175Audit
Quiver Overlap
Direct Trail Rivals
2-Shoe Rotation Strategy
Both models occupy the exact same trail slot on your shoe rack. Rather than buying both, runner consensus suggests picking the lighter Akasha II (310g) for quicker cadence, or the Cascadia 18 for its DNA LOFT v2 EVA blend with Trail Adapt system ride feel and structure.
Cascadia 18 RoleTrail Workhorse
Akasha II RoleAlternative Trail
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