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BOYS TRACK & FIELDJOHNSBURG2026 SEASON

Sebastian
Kostemaj

Events800m1600m
0
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PR · 800m
2:33.99
Set at
Badger Invite
Date
05/01
01

The Season

Tap an event to plot it
DateMeetMarkΔ
03/21Lake Michigan Invite (BOYS)2:47.41—
05/01Badger Invite2:33.99▼ 13.42
PROGRESSION · 800m · 2 marks (limited) · −13.42s season
2:29.962:35.332:40.702:46.072:51.4403/2105/01
02

Personal Bests

All events on record
EventBest markMarksLast meetWI Rank
800m2:33.992Badger Invite · 05/01Unranked
1600m6:03.452Lake Michigan Invite (BOYS) · 03/21Unranked
03

Rankings

Where Sebastian stacks up

No statewide ranking on record yet.

BOYS CROSS COUNTRYJOHNSBURG2025 SEASON

Sebastian
Kostemaj

5K PR20:38.12
Races3
Wins0
Season avg21:58
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5K PERSONAL BEST · 2025
20:38.12
Set at
IHSA Class 1A State XC Championships
Finish
257th
Date
11/08
01

The Season

3 races on record
DateRaceTimePlace
11/08IHSA Class 1A State XC Championships20:38.12257th
10/13Amboy Columbus Day XC Invitational 22:16.50135th
09/13First to the Finish Invitational22:59.70606th
5K PROGRESSION · 3 races · PR 20:38.12 · avg 21:58
19:5620:5221:4922:4623:4209/1310/1311/08Season best 20:38
Times aren't directly comparable course-to-course — terrain & weather vary. The PR is the fastest verified clock.
02

By the Numbers

Season averages & finishes
20:38.12
5K PR
21:58
Season avg
3
Races
0
Wins
0
Top-3
0
Top-10
135th
Best finish
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WI ATHLETE · MADE IN WISCONSIN · 2026RESULTS VERIFIED · WIAA