Rider Type · Data-Derived
Puncheur
Explosive on short steep efforts, strongest when fresh. Power drops with fatigue.
Over 18 rides and 165 segment results in 2026, James Robinson averaged in the top 44% of the field, with a −6 percentile points from the opening segments to the late-ride segments.
Over 18 rides and 165 segment results in 2026, James Robinson averaged in the top 44% of the field, with a −6 percentile points from the opening segments to the late-ride segments.
Fatigue Pattern — Field Percentile by Segment Position
Average field percentile per segment slot (lower = better; bar height = how far back)
Opening (S01–S02): top 39% avg →
Late (S07+): top 45% avg ·
Swing: −6 percentile points
Performance by Segment Type
By Distance
<0.4km (n=59 · 341W avg)
Top 40%
0.4–0.8km (n=62 · 284W avg)
Top 45%
>0.8km (n=44 · 240W avg)
Top 49%
By Gradient
<6% flat (n=32 · 282W avg)
Top 50%
6–10% mod (n=69 · 282W avg)
Top 45%
10–13% steep (n=48 · 306W avg)
Top 41%
>13% wall (n=15 · 298W avg)
Top 40%
Effort Profile
Punchy <0.45km ≥9% (n=43)
Top 39%
Threshold ≥0.7km ≥5% (n=42)
Top 48%
Peak Performances — Best 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 12/61 | Deerfield Drive up | 0.24 km | 9.1% |
| 18/77 | Madonna Way (the climb) | 0.29 km | 14.4% |
| 16/68 | Briones climb | 0.39 km | 8.1% |
| 15/62 | Old Snakey Rd - Off Moody Rd | 0.23 km | 11.3% |
| 17/62 | Oak Park Ct - Cir Full Climb | 0.37 km | 8.9% |
Toughest Moments — Worst 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 68/71 | Quinnhill from Summerhill | 0.35 km | 7.5% |
| 31/37 | Golden Hills-Fawn-Cervantes peak | 1.7 km | 5.9% |
| 47/62 | La Cresta - full length | 1.64 km | 5.0% |
| 45/60 | Loyola with Berkshire sidetrip | 1.29 km | 5.5% |
| 43/62 | Deer Creek Sprint (Egan Official) | 0.5 km | 4.7% |
What the Data Suggests
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Strengths to Protect
Explosive anaerobic power on short steep climbs. Opening-segment aggression (top 39% on S1–S2). Wall-gradient efforts where torque beats sustained output. Don't over-train aerobic base at the expense of peak power — that edge is real.
🎯
Development Area
Aerobic threshold and repeatability — the gap between S1 (top 39%) and S7+ (top 45%) is 6 percentile points. Even closing that to 5 points would be transformative on long-format rides. Target: 2×20 threshold work and back-to-back climbing days to build the aerobic floor.
📊
The Real Enemy
Fatigue, not segment type. Power drops 30% from short to long segments (341W → 240W). The issue is power-at-fatigue (FTP relative to peak power) — on a fresh day the ceiling is genuinely high.