Stephanie O'Brien

Chicago

Bib: 40080 F

Masters

0:00

0:00

/ mi

Masters

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Overall

#0 / 54109

Gender (Female)

#0 / 24561

Top 48%

Masters (Masters Women)

#0 / 9409

Top 44%

Division (F50-54)

#0 / 1771

Top 42%

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

9:07/mi

28:20

↑ 52 ft↓ 48 ft

601 ft elev

10K· 6.21 mi

9:06/mi

56:37

↑ 25 ft↓ 31 ft

593 ft elev

15K· 9.32 mi

9:14/mi

1:25:19

↑ 12 ft↓ 13 ft

593 ft elev

20K· 12.43 mi

9:47/mi

1:55:43

↑ 18 ft↓ 17 ft

596 ft elev

Half· 13.11 mi

14:04/mi

2:05:19

↑ 13 ft0.2% grade

603 ft elev

25K· 15.53 mi

10:17/mi

2:30:15

↑ 22 ft↓ 30 ft

597 ft elev

30K· 18.64 mi

10:29/mi

3:02:50

↑ 13 ft↓ 12 ft

597 ft elev

35K· 21.75 mi

11:27/mi

3:38:24

↑ 27 ft↓ 27 ft

597 ft elev

40K· 24.85 mi

11:44/mi

4:14:50

↑ 16 ft↓ 11 ft

602 ft elev

Finish· 26.22 mi

10:31/mi

4:29:10

↑ 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

2:05:199:34 /mi⚡ faster

2nd Half

2:23:5110:58 /mi+14.8%

Positive split — 14.8% slower in the second half

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Checkpoint Splits

Checkpoint	Time	Avg Pace	Segment Length	Segment Time	Segment Pace	Diff
5K	28:20	9:07	3.11 mi	28:20	9:07	-
10K	56:37	9:07	3.10 mi	28:17	9:06	-0:01
15K	1:25:19	9:09	3.11 mi	28:42	9:14	+0:08
20K	1:55:43	9:19	3.11 mi	30:24	9:47	+0:33
Half(13.11 mi)	2:05:19	9:34	0.68 mi	9:36	14:04	+4:17
25K	2:30:15	9:40	2.42 mi	24:56	10:17	-3:47
30K	3:02:50	9:48	3.11 mi	32:35	10:29	+0:12
35K	3:38:24	10:03	3.11 mi	35:34	11:27	+0:58
40K	4:14:50	10:15	3.10 mi	36:26	11:44	+0:17
Finish(26.22 mi)	4:29:10	10:16	1.37 mi	14:20	10:31	-1:13

Trend:

Faster pace

Steady pace

Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

9:06 /mi

Average Pace

10:16 /mi

Slowest Pace

14:04 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

1:25:19

32% of race

Time at Steady Pace

1:42:15

38% of race

Time at Slower Pace

1:21:36

30% of race

Average Pace: 10:16 /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	F50-54	Seg. Overall	Seg. Females	Seg. F50-54
5K	3.11 mi	27066	8672	553	30193	10040	609
10K	3.10 mi	26714+352	8493+179	545+8	26794	8525	541
15K	3.11 mi	27953-1239	9015-522	569-24	30193	10040	609
20K	3.11 mi	29393-1440	9705-690	597-28	32775	11440	728
Half(13.11 mi)	0.68 mi	31402-2009	10708-1003	678-81	49925	21836	1537
25K	2.42 mi	31755-353	10940-232	699-21	34204	12532	817
30K	3.11 mi	31598+157	10991-51	694+5	32129	11779	749
35K	3.11 mi	32095-497	11439-448	727-33	34895	13894	902
40K	3.10 mi	32066+29	11660-221	746-19	32742	13384	871
Finish(26.22 mi)	1.37 mi	31953+113	11675-15	743+3	30437	12300	734

12300

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