Rider Type · Data-Derived
Diesel / Rouleur
Consistent across the ride. Aerobic engine that keeps firing late in the day.
Over 11 rides and 105 segment results in 2026, Jerome S averaged in the top 39% of the field, with a +0 percentile points (improves!) from the opening segments to the late-ride segments.
Over 11 rides and 105 segment results in 2026, Jerome S averaged in the top 39% of the field, with a +0 percentile points (improves!) 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 40% avg →
Late (S07+): top 41% avg ·
Swing: +0 percentile points (improves!)
Performance by Segment Type
By Distance
<0.4km (n=44 · 389W avg)
Top 38%
0.4–0.8km (n=38 · 349W avg)
Top 41%
>0.8km (n=23 · 314W avg)
Top 35%
By Gradient
<6% flat (n=23 · 365W avg)
Top 34%
6–10% mod (n=46 · 355W avg)
Top 38%
10–13% steep (n=29 · 361W avg)
Top 41%
>13% wall (n=7 · 342W avg)
Top 48%
Effort Profile
Punchy <0.45km ≥9% (n=29)
Top 40%
Threshold ≥0.7km ≥5% (n=23)
Top 34%
Peak Performances — Best 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 4/74 | Quinhill from University (Egan Official) | 0.31 km | 12.0% |
| 8/75 | Wildcrest to 2nd White Gate (Egan Official) | 0.37 km | 12.7% |
| 9/74 | Dezahara Way | 0.48 km | 5.4% |
| 9/62 | Black Mtn Rd. | 0.83 km | 5.6% |
| 9/60 | Hermosa Lomita Linda | 0.31 km | 10.9% |
Toughest Moments — Worst 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 53/62 | Alta Tierra | 0.27 km | 10.0% |
| 53/62 | E Byrne Park & Deer Springs Way | 0.44 km | 6.7% |
| 52/62 | Tanglewood Lane | 0.21 km | 15.8% |
| 50/61 | Deerfield Drive up | 0.24 km | 9.1% |
| 50/62 | Hanover St | 0.48 km | 4.8% |
What the Data Suggests
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Strengths to Protect
Exceptional repeatability — the engine keeps firing deep into the ride. Late-ride performance (top 41%) is actually close to the opening. Thrives on rides with high segment counts where rivals are already fading. The aerobic base is the asset — protect it.
🎯
Development Area
Peak power and short-burst acceleration. The punch/threshold gap (top 40% vs top 34%) shows where the ceiling is on explosive efforts. Sprint intervals and over-under VO2max work would add a new gear without eroding the aerobic base. The diesel engine is built — adding a turbo is the next step.
📊
The Real Enemy
Absolute peak power output, not endurance. The engine runs clean all day but the rev ceiling is the constraint. Watts from early to late: 397W → 340W (-14%) — barely any drop, which is the signature. The rival who fades less than everyone else still loses to a rider who never needed to fade.