Ellen Boster

Chicago

Bib: 23930 F

0:00

0:00

/ mi

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Overall

#0 / 54109

Gender (Female)

#0 / 24561

Top 47%

Division (F25-29)

#0 / 5362

Top 50%

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

8:58/mi

27:50

↑ 52 ft↓ 48 ft

601 ft elev

10K· 6.21 mi

9:01/mi

55:50

↑ 25 ft↓ 31 ft

593 ft elev

15K· 9.32 mi

8:51/mi

1:23:21

↑ 12 ft↓ 13 ft

593 ft elev

20K· 12.43 mi

9:06/mi

1:51:37

↑ 18 ft↓ 17 ft

596 ft elev

Half· 13.11 mi

8:58/mi

1:57:44

↑ 13 ft0.2% grade

603 ft elev

25K· 15.53 mi

8:56/mi

2:19:23

↑ 22 ft↓ 30 ft

597 ft elev

30K· 18.64 mi

9:15/mi

2:48:08

↑ 13 ft↓ 12 ft

597 ft elev

35K· 21.75 mi

12:43/mi

3:27:38

↑ 27 ft↓ 27 ft

597 ft elev

40K· 24.85 mi

13:53/mi

4:10:46

↑ 16 ft↓ 11 ft

602 ft elev

Finish· 26.22 mi

12:48/mi

4:28:14

↑ 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

1:57:448:59 /mi⚡ faster

2nd Half

2:30:3011:29 /mi+27.8%

Positive split — 27.8% slower in the second half

AI Race Performance Report

Ellen'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	27:50	8:58	3.11 mi	27:50	8:58	-
10K	55:50	8:59	3.10 mi	28:00	9:01	+0:03
15K	1:23:21	8:57	3.11 mi	27:31	8:51	-0:10
20K	1:51:37	8:59	3.11 mi	28:16	9:06	+0:15
Half(13.11 mi)	1:57:44	8:59	0.68 mi	6:07	8:58	-0:08
25K	2:19:23	8:58	2.42 mi	21:39	8:56	-0:02
30K	2:48:08	9:01	3.11 mi	28:45	9:15	+0:19
35K	3:27:38	9:33	3.11 mi	39:30	12:43	+3:28
40K	4:10:46	10:05	3.10 mi	43:08	13:53	+1:10
Finish(26.22 mi)	4:28:14	10:14	1.37 mi	17:28	12:48	-1:05

Trend:

Faster pace

Steady pace

Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

8:51 /mi

Average Pace

10:14 /mi

Slowest Pace

13:53 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:48:08

63% of race

Time at Slower Pace

1:40:06

37% of race

Average Pace: 10:14 /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	25076	7779	1713	25753	7941	1807
10K	3.10 mi	25198-122	7794-15	1739-26	25603	7984	1794
15K	3.11 mi	25283-85	7802-8	1739	25753	7941	1807
20K	3.11 mi	25537-254	7911-109	1768-29	26618	8356	1914
Half(13.11 mi)	0.68 mi	25344+193	7828+83	1754+14	23216	6967	1641
25K	2.42 mi	24898+446	7670+158	1734+20	23231	7047	1641
30K	3.11 mi	24435+463	7557+113	1722+12	23527	7473	1779
35K	3.11 mi	28222-3787	9447-1890	2165-443	41090	17296	3989
40K	3.10 mi	30812-2590	11009-1562	2527-362	43098	18791	4313
Finish(26.22 mi)	1.37 mi	31663-851	11535-526	2662-135	44355	19513	4568

19513

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