Rider Type · Data-Derived
Diesel / Rouleur
Consistent across the ride. Aerobic engine that keeps firing late in the day.
Over 19 rides and 178 segment results in 2026, Dirk Bergstrom averaged in the top 30% of the field, with a −2 percentile points from the opening segments to the late-ride segments.
Over 19 rides and 178 segment results in 2026, Dirk Bergstrom averaged in the top 30% of the field, with a −2 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 30% avg →
Late (S07+): top 33% avg ·
Swing: −2 percentile points
Performance by Segment Type
By Distance
<0.4km (n=59 · 385W avg)
Top 33%
0.4–0.8km (n=66 · 354W avg)
Top 30%
>0.8km (n=53 · 293W avg)
Top 29%
By Gradient
<6% flat (n=46 · 361W avg)
Top 31%
6–10% mod (n=77 · 336W avg)
Top 30%
10–13% steep (n=43 · 338W avg)
Top 33%
>13% wall (n=11 · 327W avg)
Top 25%
Effort Profile
Punchy <0.45km ≥9% (n=37)
Top 33%
Threshold ≥0.7km ≥5% (n=50)
Top 28%
Peak Performances — Best 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 4/59 | Deer Creek Sprint (Egan Official) | 0.5 km | 4.7% |
| 6/62 | Deer Creek Sprint (Egan Official) | 0.5 km | 4.7% |
| 8/70 | Alexis final kicker | 0.34 km | 13.1% |
| 7/56 | Morro Vista | 0.25 km | 8.1% |
| 8/58 | La Paloma from Westwind | 0.55 km | 6.9% |
Toughest Moments — Worst 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 39/39 | Golden Oak - Sausal to top | 1.02 km | 6.6% |
| 37/37 | Golden Hills-Fawn-Cervantes peak | 1.7 km | 5.9% |
| 49/54 | Matadero Creek Ln Climb from Bottom | 0.26 km | 10.3% |
| 48/59 | O'Keefe summitage | 0.41 km | 6.6% |
| 41/59 | Ravensbury | 0.94 km | 4.9% |
What the Data Suggests
💪
Strengths to Protect
Exceptional repeatability — the engine keeps firing deep into the ride. Late-ride performance (top 33%) 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 33% vs top 28%) 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: 413W → 316W (-23%) — 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. One note: Ride 19 looks like a major outlier — averaging top 100% vs your season norm of top 31%. A single bad day (mechanical, illness, off route) is pulling down the headline numbers.
Pack Battle — Rivals Within 15 Seconds
Same-gender riders finishing within 15 s of Dirk across multiple rides (≥2 encounters).
🏴
Nemesis
Martin W
1–2 in 3 encounters · 33% wins
⚔️
Rival
Travis Robinett
1–1 in 2 encounters · 50% wins
🎯
Prey
Simon Bernal
2–0 in 2 encounters · 100% wins
| Rider | Encounters | Dirk record | Win % |
|---|---|---|---|
| 🏴 Martin W | 3 | 1–2 | 33% |
| 🏴 David Remahl | 3 | 1–2 | 33% |
| 🏴 Kevin Kauffman | 3 | 0–3 | 0% |
| 🎯 Simon Bernal | 2 | 2–0 | 100% |
| 🎯 Benoit Viguier | 2 | 2–0 | 100% |
| ⚔️ Travis Robinett | 2 | 1–1 | 50% |
| 🏴 Patrick Whitesel | 2 | 0–2 | 0% |
| 🏴 Ryan Fisher | 2 | 0–2 | 0% |
| 🏴 Jonathan Peterson | 2 | 0–2 | 0% |
| 🏴 Kai Yee | 2 | 0–2 | 0% |