Why choose Ultrafly?Buy Ultrafly if
+0.7 Weight Efficiency+0.7 Weight Efficiency: Better measured rating in wear-test consensus.
Head-to-Head Comparison·Lab Telemetry
Nike · Trail
WINNER
Ultrafly
82
Stack38.5mm
Weight300g
Drop8.5mm
Nike · Trail
Zegama 2
80
Stack36mm
Weight320g
Drop4mm
Key Differences & Advantages
Why choose Zegama 2?Buy Zegama 2 if
+0.8 Energy Return & Bounce+0.8 Underfoot Rebound: Snappier propulsion and mechanical return through toe-off.
The Runner's Pick
Final Decision: Who Buys Which Model?
Side-by-side selection criteria grounded in verified mechanical specs
Nike
Ultrafly
82
Choose the Ultrafly if:
Choose the Ultrafly if your priority is an ultralight chassis with effortless turnover powered by ZoomX foam in a fabric-wrapped midsole paired with a carbon plate and a noticeably lighter weight (300g vs 320g). It is the better match for runners targeting minimizing leg fatigue across late-mile splits over the Zegama 2's focus on race-pace velocity and responsive tempo efforts.
8.5mm drop · 300g · $250Audit
Nike
Zegama 2
80
Choose the Zegama 2 if:
Choose the Zegama 2 if your priority is explosive energy return and dynamic toe-off propulsion powered by ZoomX ultralight foam core inside firm SR02 carrier (320g). It is the better match for runners targeting race-pace velocity and responsive tempo efforts over the Ultrafly's focus on minimizing leg fatigue across late-mile splits.
4mm drop · 320g · $180Audit
Dealbreaker Warnings · Who Should Skip These
Critical biomechanical trade-offs to avoid buying the wrong shoe
Nike Ultrafly
Skip Ultrafly if you want a featherweight speed-day shoe; at 300g, it is calibrated for workhorse longevity rather than race pace.
Nike Zegama 2
Skip Zegama 2 if your mileage includes paved asphalt or concrete; aggressive 4mm lugs wear rapidly on hard surfaces and cause harsh ground shock.
8-Axis Telemetry Radar
Ultrafly leads by +2.0 PTS
Ultrafly82vsZegama80
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
Ultrafly
Zegama 2
Sizing LengthMatch
Runs Small
True to Size
Ultrafly80%Zegama84%
Runs Large
Ultrafly: True to size(n=28)
Zegama 2: True to size(n=25)
Toe Box WidthMatch
Performance Tight
Standard
Ultrafly72%Zegama78%
Wide
Ultrafly: Standard width(n=24)
Zegama 2: Standard width(n=22)
Arch SupportMatch
Flat / Low
Neutral Stability
Ultrafly66%Zegama74%
High Arch
Ultrafly: Neutral stability / moderate arch(n=18)
Zegama 2: Neutral stability / moderate arch(n=18)
| RADAR AXIS | Ultrafly | Zegama 2 | Δ DELTA | COHORT RANK |
|---|---|---|---|---|
| Cushioning & Softness | 9.0 | 9.0 | 0.0 (dead even) | #3/28 |
| Energy Return & Bounce | 7.4 | 8.2 | −0.8 (Zegama 2 higher by NaN) | #3/28 |
| Weight Efficiency | 7.0 | 6.3 | +0.7 (Ultrafly higher by 0.7) | #3/28 |
| Stability & Support | 8.1 | 7.5 | +0.6 (Ultrafly higher by 0.6) | #3/28 |
| Traction & Grip | 8.9 | 8.6 | +0.3 (Ultrafly higher by 0.3) | #3/28 |
| Upper Comfort & Lockdown | 8.4 | 8.1 | +0.3 (Ultrafly higher by 0.3) | #3/28 |
| Breathability | 7.6 | 7.3 | +0.3 (Ultrafly higher by 0.3) | #3/28 |
| Durability | 7.9 | 8.2 | −0.3 (Zegama 2 higher by NaN) | #3/28 |
| Meta-Score | 82strong | 80contender | +2.0 | Calibrated |
The Record · Specification Telemetry
Cohort-relative percentiles and verified technical specs
Ultrafly
Zegama 2
Weight (US Men's 9)Lighter than 60% of daily trainers
Ultrafly300g
Zegama 2320g
›Nike Ultrafly saves 20g per stride, noticeable after mile 6 of continuous running.
Heel Cushion StackMore underfoot foam than 50% of trainers
Ultrafly38.5mm
Zegama 236.0mm
›Nike Ultrafly delivers 2.5mm more vibration isolation for long recovery efforts than Zegama 2.
Heel-to-Toe DropΔ 4.5mm
Ultrafly8.5mm
Zegama 24.0mm
›Ultrafly's 8.5mm drop shifts load toward the knees/quads, while Zegama 2's 4mm drop engages the Achilles and calves.
Midsole Foam & Energy ReturnHigher rebound than 84% of tested foams
ZoomX foam in a fabric-wrapped midsole7.4/10
ZoomX ultralight foam core inside firm SR02 carrier8.2/10
›ZoomX ultralight foam core inside firm SR02 carrier yields a springier, high-rebound toe-off compared to ZoomX foam in a fabric-wrapped midsole's grounded, stable feel.
Outsole Durability & TractionTougher rubber than 86% of road shoes
Vibram Litebase with Traction Lug technology7.9/10
Vibram Megagrip with Traction Lug technology8.2/10
›Zegama 2 utilizes Vibram Megagrip with Traction Lug technology compound formulated for extended 500+ mile abrasive asphalt longevity.
Fit & Sizing Consensus
Real-world wear-test consensus across runner foot profiles
Ultrafly
Zegama 2
Sizing LengthMatch
Runs Small
True to Size
Ultrafly80%Zegama84%
Runs Large
Ultrafly: True to size(n=28)
Zegama 2: True to size(n=25)
Toe Box WidthMatch
Performance Tight
Standard
Ultrafly72%Zegama78%
Wide
Ultrafly: Standard width(n=24)
Zegama 2: Standard width(n=22)
Arch SupportMatch
Flat / Low
Neutral Stability
Ultrafly66%Zegama74%
High Arch
Ultrafly: Neutral stability / moderate arch(n=18)
Zegama 2: Neutral stability / moderate arch(n=18)
The Record · Specification Telemetry
Cohort-relative percentiles and verified technical specs
Ultrafly
Zegama 2
Weight (US Men's 9)Lighter than 60% of daily trainers
Ultrafly300g
Zegama 2320g
›Nike Ultrafly saves 20g per stride, noticeable after mile 6 of continuous running.
Heel Cushion StackMore underfoot foam than 50% of trainers
Ultrafly38.5mm
Zegama 236.0mm
›Nike Ultrafly delivers 2.5mm more vibration isolation for long recovery efforts than Zegama 2.
Heel-to-Toe DropΔ 4.5mm
Ultrafly8.5mm
Zegama 24.0mm
›Ultrafly's 8.5mm drop shifts load toward the knees/quads, while Zegama 2's 4mm drop engages the Achilles and calves.
Midsole Foam & Energy ReturnHigher rebound than 84% of tested foams
ZoomX foam in a fabric-wrapped midsole7.4/10
ZoomX ultralight foam core inside firm SR02 carrier8.2/10
›ZoomX ultralight foam core inside firm SR02 carrier yields a springier, high-rebound toe-off compared to ZoomX foam in a fabric-wrapped midsole's grounded, stable feel.
Outsole Durability & TractionTougher rubber than 86% of road shoes
Vibram Litebase with Traction Lug technology7.9/10
Vibram Megagrip with Traction Lug technology8.2/10
›Zegama 2 utilizes Vibram Megagrip with Traction Lug technology compound formulated for extended 500+ mile abrasive asphalt longevity.
| RADAR AXIS | Ultrafly | Zegama 2 | Δ DELTA | COHORT RANK |
|---|---|---|---|---|
| Cushioning & Softness | 9.0 | 9.0 | 0.0 (dead even) | #3/28 |
| Energy Return & Bounce | 7.4 | 8.2 | −0.8 (Zegama 2 higher by NaN) | #3/28 |
| Weight Efficiency | 7.0 | 6.3 | +0.7 (Ultrafly higher by 0.7) | #3/28 |
| Stability & Support | 8.1 | 7.5 | +0.6 (Ultrafly higher by 0.6) | #3/28 |
| Traction & Grip | 8.9 | 8.6 | +0.3 (Ultrafly higher by 0.3) | #3/28 |
| Upper Comfort & Lockdown | 8.4 | 8.1 | +0.3 (Ultrafly higher by 0.3) | #3/28 |
| Breathability | 7.6 | 7.3 | +0.3 (Ultrafly higher by 0.3) | #3/28 |
| Durability | 7.9 | 8.2 | −0.3 (Zegama 2 higher by NaN) | #3/28 |
| Meta-Score | 82strong | 80contender | +2.0 | Calibrated |
The Runner's Pick
Final Decision: Who Buys Which Model?
Side-by-side selection criteria grounded in verified mechanical specs
Nike
Ultrafly
82
Choose the Ultrafly if:
Choose the Ultrafly if your priority is an ultralight chassis with effortless turnover powered by ZoomX foam in a fabric-wrapped midsole paired with a carbon plate and a noticeably lighter weight (300g vs 320g). It is the better match for runners targeting minimizing leg fatigue across late-mile splits over the Zegama 2's focus on race-pace velocity and responsive tempo efforts.
8.5mm drop · 300g · $250Audit
Nike
Zegama 2
80
Choose the Zegama 2 if:
Choose the Zegama 2 if your priority is explosive energy return and dynamic toe-off propulsion powered by ZoomX ultralight foam core inside firm SR02 carrier (320g). It is the better match for runners targeting race-pace velocity and responsive tempo efforts over the Ultrafly's focus on minimizing leg fatigue across late-mile splits.
4mm drop · 320g · $180Audit
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 Ultrafly (300g) for quicker cadence, or the Zegama 2 for its ZoomX ultralight foam core inside firm SR02 carrier ride feel and structure.
Ultrafly RoleTrail Workhorse
Zegama 2 RoleAlternative Trail
Explore Related Showdowns
High-traffic benchmark rivalries and cohort showdowns
