Rider Type · Data-Derived
Pure Climber
Thrives on sustained gradient. The steeper and longer, the better.
Over 17 rides and 164 segment results in 2026, Karl Frerichs averaged in the top 62% of the field, with a +2 percentile points (improves!) from the opening segments to the late-ride segments.
Over 17 rides and 164 segment results in 2026, Karl Frerichs averaged in the top 62% of the field, with a +2 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 63% avg →
Late (S07+): top 61% avg ·
Swing: +2 percentile points (improves!)
Performance by Segment Type
By Distance
<0.4km (n=52 · 352W avg)
Top 62%
0.4–0.8km (n=63 · 298W avg)
Top 62%
>0.8km (n=49 · 265W avg)
Top 64%
By Gradient
<6% flat (n=36 · 279W avg)
Top 69%
6–10% mod (n=68 · 304W avg)
Top 61%
10–13% steep (n=44 · 324W avg)
Top 58%
>13% wall (n=15 · 319W avg)
Top 63%
Effort Profile
Punchy <0.45km ≥9% (n=41)
Top 62%
Threshold ≥0.7km ≥5% (n=46)
Top 62%
Peak Performances — Best 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 6/54 | Matadero Creek Ln Climb from Bottom | 0.26 km | 10.3% |
| 14/62 | Foothills Park Vista Point (Egan Official) | 0.96 km | 7.6% |
| 21/72 | John Marthens Lane | 0.54 km | 10.6% |
| 23/75 | Madonna Way | 0.34 km | 10.1% |
| 17/53 | Vista Verde (Egan Official) Ramona to Old Spanish | 0.41 km | 13.5% |
Toughest Moments — Worst 5 Segments
| Rank | Segment | Distance | Grade |
|---|---|---|---|
| 51/52 | Comer Climbs (Third) | 0.32 km | 10.3% |
| 57/59 | Hilltop Drive | 0.85 km | 4.4% |
| 53/55 | Sierra Ventura | 0.57 km | 4.4% |
| 58/62 | Hanover St | 0.48 km | 4.8% |
| 58/64 | Black Mtn Rd. | 0.83 km | 5.6% |
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 — 11 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: 352W — the absolute number may be competitive, but the expression on non-climbing terrain is not translating.
Pack Battle — Rivals Within 15 Seconds
Same-gender riders finishing within 15 s of Karl across multiple rides (≥2 encounters).
⚔️
Rival
Rhodes walton
1–1 in 2 encounters · 50% wins
| Rider | Encounters | Karl record | Win % |
|---|---|---|---|
| ⚔️ Rhodes walton | 2 | 1–1 | 50% |
| ⚔️ Jonathan Lewis | 2 | 1–1 | 50% |
| ⚔️ Sam Lee | 2 | 1–1 | 50% |
| ⚔️ Victor Dinh | 2 | 1–1 | 50% |
| ⚔️ Claude Luu | 2 | 1–1 | 50% |
| ⚔️ Matt Bierbaum | 2 | 1–1 | 50% |
| ⚔️ Dane Holte | 2 | 1–1 | 50% |