Rider Type · Data-Derived
Puncheur
Explosive on short steep efforts, strongest when fresh. Power drops with fatigue.
Over 10 rides and 88 segment results in 2025, Dirk Bergstrom averaged in the top 27% of the field, with a −9 percentile points from the opening segments to the late-ride segments.
Over 10 rides and 88 segment results in 2025, Dirk Bergstrom averaged in the top 27% of the field, with a −9 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 22% avg →
Late (S07+): top 31% avg ·
Swing: −9 percentile points
Performance by Segment Type
By Distance
<0.4km (n=41)
Top 25%
0.4–0.8km (n=32)
Top 29%
>0.8km (n=15)
Top 27%
By Gradient
<6% flat (n=13)
Top 31%
6–10% mod (n=41)
Top 27%
10–13% steep (n=29)
Top 26%
>13% wall (n=5)
Top 22%
Effort Profile
Punchy <0.45km ≥9% (n=26)
Top 26%
Threshold ≥0.7km ≥5% (n=18)
Top 26%
Peak Performances — Best 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 7/90 | Dirk's super short hill sprint | 0.18 km | 5.2% |
| 6/71 | Westwind (E side) | 0.18 km | 11.4% |
| 5/53 | Parker Ranch to Star Ridge | 0.46 km | 12.0% |
| 7/63 | Aric Lane | 0.23 km | 3.8% |
| 7/62 | Morro Vista | 0.25 km | 8.1% |
Toughest Moments — Worst 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 81/85 | Boronda View Sprint | 0.6 km | 4.4% |
| 42/76 | Quinnhill from Summerhill | 0.35 km | 7.5% |
| 47/90 | Dezahara Way | 0.48 km | 5.4% |
| 41/79 | Quinnhill from Summerhill | 0.35 km | 7.5% |
| 28/55 | Altamont: Corbetta to Crest (Egan Official) | 0.99 km | 8.1% |
What the Data Suggests
💪
Strengths to Protect
Explosive anaerobic power on short steep climbs. Opening-segment aggression (top 22% 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 22%) and S7+ (top 31%) is 9 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. The issue is power-at-fatigue (FTP relative to peak power) — on a fresh day the ceiling is genuinely high. One note: Ride 03 looks like a major outlier — averaging top 60% vs your season norm of top 27%. A single bad day (mechanical, illness, off route) is pulling down the headline numbers.