Rider Type · Data-Derived
Pure Climber
Thrives on sustained gradient. The steeper and longer, the better.
Over 15 rides and 138 segment results in 2025, Clarence Yeung averaged in the top 28% of the field, with a +5 percentile points (improves!) from the opening segments to the late-ride segments.
Over 15 rides and 138 segment results in 2025, Clarence Yeung averaged in the top 28% of the field, with a +5 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 31% avg →
Late (S07+): top 26% avg ·
Swing: +5 percentile points (improves!)
Performance by Segment Type
By Distance
<0.4km (n=56 · 349W avg)
Top 32%
0.4–0.8km (n=53 · 307W avg)
Top 28%
>0.8km (n=29 · 275W avg)
Top 20%
By Gradient
<6% flat (n=24 · 324W avg)
Top 32%
6–10% mod (n=60 · 313W avg)
Top 27%
10–13% steep (n=43 · 325W avg)
Top 27%
>13% wall (n=10 · 294W avg)
Top 28%
Effort Profile
Punchy <0.45km ≥9% (n=37)
Top 29%
Threshold ≥0.7km ≥5% (n=30)
Top 19%
Peak Performances — Best 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 8/87 | Camino Hermosa (Egan Official) to Magdalena | 0.62 km | 9.4% |
| 7/64 | Lindy to the tippy-top of Canyon View | 0.82 km | 12.5% |
| 9/79 | Tepa-Summit Wood | 0.94 km | 8.0% |
| 6/52 | Quinhill from University (Egan Official) | 0.31 km | 12.0% |
| 8/68 | Ramona Rd. | 0.95 km | 11.9% |
Toughest Moments — Worst 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 67/69 | RSA bump | 0.3 km | 7.7% |
| 54/65 | Christophers Ln | 0.54 km | 4.6% |
| 47/71 | Last climb out of Rancho | 0.33 km | 3.7% |
| 44/70 | Canyon Drive | 0.51 km | 6.2% |
| 41/70 | Plateau Ave Climb | 0.31 km | 8.7% |
What the Data Suggests
💪
Strengths to Protect
Gradient is your friend — performance holds or improves on steeper pitches. Best on sustained steep climbs. The climbing economy (power-to-weight expression) is the weapon. Protect body weight and VO2max work.
🎯
Development Area
Flat and rolling segments are the weak spot — 5 percentile points behind best-gradient performance. Not about becoming a sprinter, but reducing the gap on terrain where others are pulling away. Cadence work, aero position, and short flat intervals would help neutralize the disadvantage.
📊
The Real Enemy
Flat terrain and short punchy efforts where raw speed matters more than W/kg. Watts on short efforts: 349W — the absolute number may be competitive, but the expression on non-climbing terrain is not translating.