Jamie O’Brien

Braintree

Bib: 64925 F

0:00

0:00

/ mi

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Overall

#0 / 54109

Gender (Female)

#0 / 24561

Top 46%

Division (F20-24)

#0 / 2002

Top 45%

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

10:07/mi

31:26

↑ 52 ft↓ 48 ft

601 ft elev

10K· 6.21 mi

10:24/mi

1:03:45

↑ 25 ft↓ 31 ft

593 ft elev

15K· 9.32 mi

10:05/mi

1:35:06

↑ 12 ft↓ 13 ft

593 ft elev

20K· 12.43 mi

10:15/mi

2:06:58

↑ 18 ft↓ 17 ft

596 ft elev

Half· 13.11 mi

10:26/mi

2:14:05

↑ 13 ft0.2% grade

603 ft elev

25K· 15.53 mi

10:04/mi

2:38:30

↑ 22 ft↓ 30 ft

597 ft elev

30K· 18.64 mi

10:10/mi

3:10:05

↑ 13 ft↓ 12 ft

597 ft elev

35K· 21.75 mi

10:09/mi

3:41:36

↑ 27 ft↓ 27 ft

597 ft elev

40K· 24.85 mi

10:16/mi

4:13:31

↑ 16 ft↓ 11 ft

602 ft elev

Finish· 26.22 mi

9:05/mi

4:25:55

↑ 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

2:14:0510:14 /mi+1.7%

2nd Half

2:11:5010:03 /mi✓ faster

Negative split — 1.7% faster in the second half

AI Race Performance Report

Jamie'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	31:26	10:07	3.11 mi	31:26	10:07	-
10K	1:03:45	10:16	3.10 mi	32:19	10:24	+0:17
15K	1:35:06	10:12	3.11 mi	31:21	10:05	-0:19
20K	2:06:58	10:13	3.11 mi	31:52	10:15	+0:10
Half(13.11 mi)	2:14:05	10:14	0.68 mi	7:07	10:26	+0:11
25K	2:38:30	10:12	2.42 mi	24:25	10:04	-0:22
30K	3:10:05	10:12	3.11 mi	31:35	10:10	+0:06
35K	3:41:36	10:11	3.11 mi	31:31	10:09	-0:01
40K	4:13:31	10:12	3.10 mi	31:55	10:16	+0:07
Finish(26.22 mi)	4:25:55	10:09	1.37 mi	12:24	9:05	-1:11

Trend:

Faster pace

Steady pace

Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

9:05 /mi

Average Pace

10:09 /mi

Slowest Pace

10:26 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

12:24

5% of race

Time at Steady Pace

4:13:31

95% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:09 /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	F20-24	Seg. Overall	Seg. Females	Seg. F20-24
5K	3.11 mi	36540	13381	1083	37516	13917	1171
10K	3.10 mi	37210-670	13774-393	1149-66	37995	14227	1200
15K	3.11 mi	37199+11	13754+20	1156-7	37516	13917	1171
20K	3.11 mi	36965+234	13656+98	1155+1	36525	13485	1140
Half(13.11 mi)	0.68 mi	36826+139	13593+63	1148+7	35237	12952	1100
25K	2.42 mi	35940+886	13189+404	1104+44	32682	11681	976
30K	3.11 mi	34618+1322	12625+564	1043+61	30009	10605	858
35K	3.11 mi	33207+1411	12040+585	985+58	27089	9629	774
40K	3.10 mi	31673+1534	11457+583	926+59	24129	8812	678
Finish(26.22 mi)	1.37 mi	30979+694	11174+283	904+22	19093	6650	566

6650

Passing Analysis

No position changes recorded for this athlete.

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All Results

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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