David Sieffert

Oak Forest

Bib: 24347 M

Masters

0:00

0:00

/ mi

Masters

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Overall

#0 / 54109

Top 38%

Gender (Male)

#0 / 29548

Top 48%

Masters (Masters Men)

#0 / 14666

Top 44%

Division (M40-44)

#0 / 4329

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

9:21/mi

29:04

↑ 52 ft↓ 48 ft

601 ft elev

10K· 6.21 mi

8:52/mi

56:37

↑ 25 ft↓ 31 ft

593 ft elev

15K· 9.32 mi

8:46/mi

1:23:50

↑ 12 ft↓ 13 ft

593 ft elev

20K· 12.43 mi

8:48/mi

1:51:10

↑ 18 ft↓ 17 ft

596 ft elev

Half· 13.11 mi

8:52/mi

1:57:13

↑ 13 ft0.2% grade

603 ft elev

25K· 15.53 mi

8:43/mi

2:18:22

↑ 22 ft↓ 30 ft

597 ft elev

30K· 18.64 mi

8:53/mi

2:45:59

↑ 13 ft↓ 12 ft

597 ft elev

35K· 21.75 mi

8:53/mi

3:13:35

↑ 27 ft↓ 27 ft

597 ft elev

40K· 24.85 mi

8:57/mi

3:41:22

↑ 16 ft↓ 11 ft

602 ft elev

Finish· 26.22 mi

8:52/mi

3:53:28

↑ 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

1:57:138:56 /mi⚖️ balanced

2nd Half

1:56:158:52 /mi⚖️ balanced

Even split — consistent pacing between halves

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Checkpoint Splits

Checkpoint	Time	Avg Pace	Segment Length	Segment Time	Segment Pace	Diff
5K	29:04	9:21	3.11 mi	29:04	9:21	-
10K	56:37	9:07	3.10 mi	27:33	8:52	-0:29
15K	1:23:50	9:00	3.11 mi	27:13	8:46	-0:06
20K	1:51:10	8:57	3.11 mi	27:20	8:48	+0:02
Half(13.11 mi)	1:57:13	8:56	0.68 mi	6:03	8:52	+0:04
25K	2:18:22	8:54	2.42 mi	21:09	8:43	-0:09
30K	2:45:59	8:54	3.11 mi	27:37	8:53	+0:10
35K	3:13:35	8:54	3.11 mi	27:36	8:53	0:00
40K	3:41:22	8:54	3.10 mi	27:47	8:57	+0:04
Finish(26.22 mi)	3:53:28	8:55	1.37 mi	12:06	8:52	-0:05

Trend:

Faster pace

Steady pace

Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

8:43 /mi

Average Pace

8:55 /mi

Slowest Pace

9:21 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

3:24:24

88% of race

Time at Steady Pace

29:04

12% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:54 /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	M40-44	Seg. Overall	Seg. Males	Seg. M40-44
5K	3.11 mi	29593	19749	3032	24503	17104	2649
10K	3.10 mi	26681+2912	18202+1547	2808+224	23816	16650	2556
15K	3.11 mi	25887+794	17807+395	2738+70	24503	17104	2649
20K	3.11 mi	25093+794	17376+431	2672+66	23039	16269	2503
Half(13.11 mi)	0.68 mi	24868+225	17261+115	2655+17	21894	15528	2383
25K	2.42 mi	24066+802	16781+480	2589+66	20938	14910	2308
30K	3.11 mi	23114+952	16158+623	2503+86	20001	14133	2178
35K	3.11 mi	22017+1097	15404+754	2392+111	17644	12423	1907
40K	3.10 mi	20728+1289	14499+905	2243+149	14860	10341	1615
Finish(26.22 mi)	1.37 mi	20425+303	14265+234	2207+36	17094	11401	1755

11401

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