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runclaxCommunity Local Athletes Index · 5K · 10K · Half Marathon · MarathonSupport us

Stephanie Przybyla

F · Age 39 · Stockton, CA

Runner Index

45.1

Participant

Average of your best 3 races in the past 3 years (any distance, by age-graded performance).

#1

Barks & Brews 5K

5K · 2025-05-26

47.0% AG

#2

Barks & Brews 5K

5K · 2026-05-25

44.6% AG

#3

Run Rocklin

Half Marathon · 2025-03-30

43.9% AG

Predicted Times

Based on your Runner Index — the average of your three best age-graded performances in the last 3 years. Times reflect your peak level, not a typical race day.

5K

27:48

10K

57:32

Half Marathon

02:05:44

Marathon

04:19:52

Races

6

Total Distance

67.2 km

Best Age-Graded

47.0%

Best Distance

5K

Trophy Case

🏆

Best Overall Finish

78th Overall at Lake Natoma Trail Run · 2026-06-06

🥇

Best Age-Graded

47.0%Participant
⚡

Fastest Times

5K: 30:4210K: 01:22:31Half Marathon: 02:26:50

Stephanie Przybyla

Stockton, CA · Age 39

Runner Index

45.1

Participant

Total Races

6

Total KM

67.2 km

Career Podiums

0

Favorite Distance

5K

PB at Favorite

30:42

Best Year

2025 (3 races)

runclax — Community Local Athletes Index

Personal Bests

5K

30:42

Barks & Brews 5K

2025-05-26

47.0% AG

10K

01:22:31

Lake Natoma Trail Run

2026-06-06

36.0% AG

Half Marathon

02:26:50

Run Rocklin

2025-03-30

43.9% AG

Age-Graded Trend

Year by Year

YearRacesBest Age-GradedBest TimeDistance
2024133.3%43:035.0 km
2025347.0%30:4247.2 km
2026244.6%32:3615.0 km

Your peers

Runners close to you in age and ability, so you can line up your own little race series.

Race History

RaceDateDistanceTimeOverallAG PlaceAge-Graded
Lake Natoma Trail Run2026-06-0610K01:22:31781036.0%
Barks & Brews 5K2026-05-255K32:364403444.6%
Barks & Brews 5K2025-05-265K30:422801847.0%
Run Rocklin2025-03-30Half Marathon02:26:501221043.9%
Shamrock'n Weekend2025-03-15Half Marathon02:35:24226041.4%
Urban Cow Weekend2024-10-055K43:0382333.3%