Jenn O’Sullivan

Boston

Bib: 63252 F

0:00

0:00

/ mi

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Overall

#0 / 54109

Gender (Female)

#0 / 24561

Division (F25-29)

#0 / 5362

Race Day Weather

54°/44°F

few clouds

Race Timeline

Ribbon color based on

FasterSteadySlower· vs. your average pace

Start

0:00

Race begins

600 ft elev

5K· 3.11 mi

10:36/mi

32:57

↑ 52 ft↓ 48 ft

601 ft elev

10K· 6.21 mi

10:39/mi

1:06:03

↑ 25 ft↓ 31 ft

593 ft elev

15K· 9.32 mi

10:19/mi

1:38:07

↑ 12 ft↓ 13 ft

593 ft elev

20K· 12.43 mi

10:23/mi

2:10:24

↑ 18 ft↓ 17 ft

596 ft elev

Half· 13.11 mi

10:52/mi

2:17:49

↑ 13 ft0.2% grade

603 ft elev

25K· 15.53 mi

10:24/mi

2:43:02

↑ 22 ft↓ 30 ft

597 ft elev

30K· 18.64 mi

10:30/mi

3:15:39

↑ 13 ft↓ 12 ft

597 ft elev

35K· 21.75 mi

10:47/mi

3:49:08

↑ 27 ft↓ 27 ft

597 ft elev

40K· 24.85 mi

10:50/mi

4:22:46

↑ 16 ft↓ 11 ft

602 ft elev

Finish· 26.22 mi

10:02/mi

4:36:27

↑ 23 ft↓ 20 ft

606 ft elev

Course Elevation

227ft

Total climb

32ft

Range

589 to 621 ft

221ft

Total descent

About the height of a three-story building

The Course

Half Splits

1st Half· via Half

2:17:4910:31 /mi⚖️ balanced

2nd Half

2:18:3810:35 /mi⚖️ balanced

Even split — consistent pacing between halves

AI Race Performance Report

Jenn's race, broken down like a coach

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Checkpoint Splits

Checkpoint	Time	Avg Pace	Segment Length	Segment Time	Segment Pace	Diff
5K	32:57	10:36	3.11 mi	32:57	10:36	-
10K	1:06:03	10:38	3.10 mi	33:06	10:39	+0:03
15K	1:38:07	10:32	3.11 mi	32:04	10:19	-0:20
20K	2:10:24	10:30	3.11 mi	32:17	10:23	+0:04
Half(13.11 mi)	2:17:49	10:31	0.68 mi	7:25	10:52	+0:29
25K	2:43:02	10:30	2.42 mi	25:13	10:24	-0:28
30K	3:15:39	10:30	3.11 mi	32:37	10:30	+0:06
35K	3:49:08	10:32	3.11 mi	33:29	10:47	+0:17
40K	4:22:46	10:34	3.10 mi	33:38	10:50	+0:03
Finish(26.22 mi)	4:36:27	10:33	1.37 mi	13:41	10:02	-0:48

Trend:

Faster pace

Steady pace

Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

10:02 /mi

Average Pace

10:33 /mi

Slowest Pace

10:52 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

2:15:52

49% of race

Time at Steady Pace

2:20:35

51% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:33 /mi

Loading chart...

Faster pace (< avg)

Steady pace (≈ avg)

Slower pace (> avg)

Heatmap

0mi6.6mi13.1mi19.7mi26.2mi

Pace:

Faster

Steady

Slower

Checkpoint and Segment Rankings

Checkpoint	Seg. Dist	Overall	Females	F25-29	Seg. Overall	Seg. Females	Seg. F25-29
5K	3.11 mi	40759	15802	3520	39239	14919	3406
10K	3.10 mi	40194+565	15488+314	3495+25	39844	15308	3469
15K	3.11 mi	39744+450	15200+288	3435+60	39239	14919	3406
20K	3.11 mi	39034+710	14825+375	3354+81	37549	14072	3238
Half(13.11 mi)	0.68 mi	38929+105	14780+45	3349+5	38048	14587	3390
25K	2.42 mi	38155+774	14416+364	3272+77	34991	12983	2996
30K	3.11 mi	36840+1315	13809+607	3144+128	32204	11823	2728
35K	3.11 mi	35778+1062	13421+388	3072+72	31024	11750	2746
40K	3.10 mi	34469+1309	12937+484	2959+113	27480	10550	2455
Finish(26.22 mi)	1.37 mi	34045+424	12791+146	2936+23	26682	10319	2525

10319

Passing Analysis

No position changes recorded for this athlete.

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Public Race Data

Enhanced athlete results built from publicly available data.

Race managed by

Chicago Event Management

Race timed by

Mika Timing