Boudewijn Duinstra

Chicago

Bib: 24323 M

Masters

0:00

0:00

/ mi

Masters

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Overall

#0 / 54109

Top 28%

Gender (Male)

#0 / 29548

Top 37%

Masters (Masters Men)

#0 / 14666

Top 33%

Division (M55-59)

#0 / 1888

Top 25%

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

8:30/mi

26:26

↑ 52 ft↓ 48 ft

601 ft elev

10K· 6.21 mi

8:24/mi

52:33

↑ 25 ft↓ 31 ft

593 ft elev

15K· 9.32 mi

8:19/mi

1:18:24

↑ 12 ft↓ 13 ft

593 ft elev

20K· 12.43 mi

8:17/mi

1:44:09

↑ 18 ft↓ 17 ft

596 ft elev

Half· 13.11 mi

8:15/mi

1:49:47

↑ 13 ft0.2% grade

603 ft elev

25K· 15.53 mi

8:16/mi

2:09:50

↑ 22 ft↓ 30 ft

597 ft elev

30K· 18.64 mi

8:16/mi

2:35:31

↑ 13 ft↓ 12 ft

597 ft elev

35K· 21.75 mi

8:18/mi

3:01:18

↑ 27 ft↓ 27 ft

597 ft elev

40K· 24.85 mi

8:18/mi

3:27:05

↑ 16 ft↓ 11 ft

602 ft elev

Finish· 26.22 mi

8:00/mi

3:38:00

↑ 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

1:49:478:22 /mi+1.4%

2nd Half

1:48:138:15 /mi✓ faster

Negative split — 1.4% faster in the second half

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Checkpoint Splits

Checkpoint	Time	Avg Pace	Segment Length	Segment Time	Segment Pace	Diff
5K	26:26	8:30	3.11 mi	26:26	8:30	-
10K	52:33	8:27	3.10 mi	26:07	8:24	-0:06
15K	1:18:24	8:25	3.11 mi	25:51	8:19	-0:05
20K	1:44:09	8:23	3.11 mi	25:45	8:17	-0:02
Half(13.11 mi)	1:49:47	8:22	0.68 mi	5:38	8:15	-0:02
25K	2:09:50	8:21	2.42 mi	20:03	8:16	+0:01
30K	2:35:31	8:21	3.11 mi	25:41	8:16	0:00
35K	3:01:18	8:20	3.11 mi	25:47	8:18	+0:02
40K	3:27:05	8:20	3.10 mi	25:47	8:18	0:00
Finish(26.22 mi)	3:38:00	8:19	1.37 mi	10:55	8:00	-0:18

Trend:

Faster pace

Steady pace

Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

8:00 /mi

Average Pace

8:19 /mi

Slowest Pace

8:30 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

3:11:34

88% of race

Time at Steady Pace

26:26

12% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:19 /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	Males	M55-59	Seg. Overall	Seg. Males	Seg. M55-59
5K	3.11 mi	19797	14301	698	19557	14242	679
10K	3.10 mi	19302+495	13989+312	679+19	18913	13776	656
15K	3.11 mi	19363-61	14048-59	676+3	19557	14242	679
20K	3.11 mi	18875+488	13772+276	657+19	17716	13143	592
Half(13.11 mi)	0.68 mi	18667+208	13647+125	645+12	16061	12041	524
25K	2.42 mi	18259+408	13390+257	622+23	16681	12386	548
30K	3.11 mi	17490+769	12896+494	587+35	14433	10832	452
35K	3.11 mi	16492+998	12182+714	544+43	12772	9543	385
40K	3.10 mi	15289+1203	11305+877	491+53	10340	7699	297
Finish(26.22 mi)	1.37 mi	14914+375	11024+281	473+18	10027	7375	261

7375

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