Rider Type · Data-Derived
Diesel / Rouleur
Consistent across the ride. Aerobic engine that keeps firing late in the day.
Over 24 rides and 243 segment results in 2025, Jonathan Lewis averaged in the top 66% of the field, with a +8 percentile points (improves!) from the opening segments to the late-ride segments.
Over 24 rides and 243 segment results in 2025, Jonathan Lewis averaged in the top 66% of the field, with a +8 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 72% avg →
Late (S07+): top 64% avg ·
Swing: +8 percentile points (improves!)
Performance by Segment Type
By Distance
<0.4km (n=103)
Top 70%
0.4–0.8km (n=85)
Top 67%
>0.8km (n=55)
Top 58%
By Gradient
<6% flat (n=44)
Top 63%
6–10% mod (n=111)
Top 64%
10–13% steep (n=72)
Top 70%
>13% wall (n=14)
Top 73%
Effort Profile
Punchy <0.45km ≥9% (n=67)
Top 70%
Threshold ≥0.7km ≥5% (n=54)
Top 59%
Peak Performances — Best 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 21/65 | Elena Rd to Natoma | 0.82 km | 6.7% |
| 21/65 | Black Mtn Rd. | 0.83 km | 5.6% |
| 26/79 | Ascenscion + Anacapa | 0.85 km | 9.4% |
| 21/62 | Altamont - Stop Sign to Crest | 1.73 km | 6.7% |
| 29/85 | Boronda View Sprint | 0.6 km | 4.4% |
Toughest Moments — Worst 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 81/84 | Horseshoe Ct | 0.23 km | 15.1% |
| 64/67 | Plateau Ave Climb | 0.31 km | 8.7% |
| 62/65 | Christophers Ln | 0.54 km | 4.6% |
| 61/64 | Oxford Dr (West) | 0.12 km | 10.7% |
| 60/63 | Aric Lane | 0.23 km | 3.8% |
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 64%) is actually stronger 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 70% vs top 59%) 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. The rival who fades less than everyone else still loses to a rider who never needed to fade. One note: Ride 15 looks like a major outlier — averaging top 92% vs your season norm of top 66%. A single bad day (mechanical, illness, off route) is pulling down the headline numbers.