DEMO DATA. All athlete names, results, and demographic fields (income, education, occupation, etc.) are fully synthesized for demonstration purposes. No real athlete data is represented.

Racer Dashboard

Karl Leffler

36 · Male · Tokyo · Japan ·

Age group 35-39

Elite in

13
Total races
95.5%
Best percentile
100.0%
Best AG percentile
36
Age

Performance trend

Personal records

Half Marathon
1:33:28
Madison Freedom Challenge 2024
Sprint Triathlon
2:23:00
Triathlon de Québec - Baie de Beauport 2024
Marathon
3:53:57
L'Alpe de Grand Blanc 2024
Ironman 140.6
27:22:18
Ironman Texas 2023
100K Ultra
13:03:01
Canyons 100K 2025
Olympic Triathlon
4:53:28
Aqua Warriors Halong Bay 2024
5K
26:17
Vancouver Summer Race 2023

Stats this runner is willing to share

Demographics
Income
$62,964
Education
Some College
Occupation
Technology
Marital status
MARRIED
Household size
4
Home
RENT
Training
Years running
10.7
Weekly mileage
67 km
Days / week
6
Physiology
Height
175 cm
Weight
77.6 kg
VO₂ max
39.9
Resting HR
69 bpm
Sleep
5.7 hr

Recent results

DateRaceTypeTimeOverallAGPercentile
Sep 18, 2026Atlanta Liberty Invitational 2026Half Marathon1:33:5456th13th78.2%
Aug 11, 2026Triathlon de Québec - Baie de Beauport 2026Sprint Triathlon2:39:4269th14th78.1%
May 1, 2026Canyons California 2026Marathon4:30:59115th17th54.9%
Apr 27, 2026Ironman Texas 2026Ironman 140.627:36:3933rd4th80.8%
Oct 26, 2025Canyons 100K 2025100K Ultra13:03:0132nd8th84.4%
Oct 18, 2024Aqua Warriors Halong Bay 2024Olympic Triathlon4:53:286th2nd95.5%
Sep 27, 2024L'Alpe de Grand Blanc 2024Marathon3:53:5712th1st88.9%
Jul 20, 2024Waterloo Grand River Games 2024Half Marathon1:49:577th2nd93.9%
Jun 27, 2024Madison Freedom Challenge 2024Half Marathon1:33:2870th15th69.7%
Jun 1, 2024Triathlon de Québec - Baie de Beauport 2024Sprint Triathlon2:23:0019th5th84.9%
Feb 17, 202412 Days of Challenges 42km 2024Marathon3:56:1819th3rd88.5%
Sep 6, 2023Ironman Texas 2023Ironman 140.627:22:186th1st95.5%
May 27, 2023Vancouver Summer Race 20235K26:17116th29th73.7%

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