Rider Type · Data-Derived
Puncheur
Explosive on short steep efforts, strongest when fresh. Power drops with fatigue.
Over 17 rides and 169 segment results in 2025, Daniel Stiffler averaged in the top 61% of the field, with a −12 percentile points from the opening segments to the late-ride segments.
Over 17 rides and 169 segment results in 2025, Daniel Stiffler averaged in the top 61% of the field, with a −12 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 51% avg →
Late (S07+): top 63% avg ·
Swing: −12 percentile points
Performance by Segment Type
By Distance
<0.4km (n=69)
Top 59%
0.4–0.8km (n=56)
Top 60%
>0.8km (n=44)
Top 66%
By Gradient
<6% flat (n=28)
Top 59%
6–10% mod (n=74)
Top 60%
10–13% steep (n=54)
Top 62%
>13% wall (n=13)
Top 63%
Effort Profile
Punchy <0.45km ≥9% (n=47)
Top 59%
Threshold ≥0.7km ≥5% (n=45)
Top 66%
Peak Performances — Best 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 10/65 | Christophers Ln | 0.54 km | 4.6% |
| 14/72 | De Bell (Egan official) | 0.31 km | 7.9% |
| 13/57 | Palmer Climb | 0.26 km | 14.8% |
| 12/52 | Quinhill from University (Egan Official) | 0.31 km | 12.0% |
| 21/85 | Mora Glen Drive climb maximus | 0.41 km | 9.0% |
Toughest Moments — Worst 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 65/67 | Plateau Ave Climb | 0.31 km | 8.7% |
| 50/54 | Prospect hill repeat | 0.59 km | 5.8% |
| 53/58 | Purissima — Arastradero to Viscaino | 1.11 km | 2.0% |
| 61/69 | middle fork from stop sign | 0.25 km | 15.2% |
| 49/56 | La Barranca Rd | 0.22 km | 7.7% |
What the Data Suggests
💪
Strengths to Protect
Explosive anaerobic power on short steep climbs. Opening-segment aggression (top 51% 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 51%) and S7+ (top 63%) is 12 percentile points. Even closing that to 6 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.