Drew Siflinger

Boston

Bib: 41621 M

0:00

0:00

/ mi

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Overall

#0 / 54109

Top 40%

Gender (Male)

#0 / 29548

Division (M25-29)

#0 / 4122

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

9:38/mi

29:57

↑ 52 ft↓ 48 ft

601 ft elev

10K· 6.21 mi

9:13/mi

58:34

↑ 25 ft↓ 31 ft

593 ft elev

15K· 9.32 mi

9:00/mi

1:26:33

↑ 12 ft↓ 13 ft

593 ft elev

20K· 12.43 mi

9:01/mi

1:54:34

↑ 18 ft↓ 17 ft

596 ft elev

Half· 13.11 mi

8:58/mi

2:00:41

↑ 13 ft0.2% grade

603 ft elev

25K· 15.53 mi

8:52/mi

2:22:11

↑ 22 ft↓ 30 ft

597 ft elev

30K· 18.64 mi

8:44/mi

2:49:20

↑ 13 ft↓ 12 ft

597 ft elev

35K· 21.75 mi

8:43/mi

3:16:24

↑ 27 ft↓ 27 ft

597 ft elev

40K· 24.85 mi

9:02/mi

3:44:28

↑ 16 ft↓ 11 ft

602 ft elev

Finish· 26.22 mi

8:31/mi

3:56:05

↑ 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

2:00:419:12 /mi+4.4%

2nd Half

1:55:248:48 /mi✓ faster

Negative split — 4.4% faster in the second half

AI Race Performance Report

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Checkpoint Splits

Checkpoint	Time	Avg Pace	Segment Length	Segment Time	Segment Pace	Diff
5K	29:57	9:38	3.11 mi	29:57	9:38	-
10K	58:34	9:26	3.10 mi	28:37	9:13	-0:25
15K	1:26:33	9:17	3.11 mi	27:59	9:00	-0:13
20K	1:54:34	9:13	3.11 mi	28:01	9:01	+0:01
Half(13.11 mi)	2:00:41	9:12	0.68 mi	6:07	8:58	-0:03
25K	2:22:11	9:09	2.42 mi	21:30	8:52	-0:06
30K	2:49:20	9:05	3.11 mi	27:09	8:44	-0:08
35K	3:16:24	9:02	3.11 mi	27:04	8:43	-0:01
40K	3:44:28	9:02	3.10 mi	28:04	9:02	+0:19
Finish(26.22 mi)	3:56:05	9:01	1.37 mi	11:37	8:31	-0:31

Trend:

Faster pace

Steady pace

Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

8:31 /mi

Average Pace

9:01 /mi

Slowest Pace

9:38 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

3:26:08

87% of race

Time at Steady Pace

29:57

13% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:00 /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	M25-29	Seg. Overall	Seg. Males	Seg. M25-29
5K	3.11 mi	32383	21161	3101	27717	18872	2854
10K	3.10 mi	30158+2225	20032+1129	2973+128	28020	18917	2859
15K	3.11 mi	29344+814	19670+362	2938+35	27717	18872	2854
20K	3.11 mi	28440+904	19203+467	2888+50	25627	17697	2677
Half(13.11 mi)	0.68 mi	28110+330	19032+171	2868+20	22988	16136	2447
25K	2.42 mi	27048+1062	18430+602	2773+95	22516	15785	2398
30K	3.11 mi	25160+1888	17303+1127	2585+188	18603	13342	2033
35K	3.11 mi	23391+1769	16151+1152	2413+172	16180	11579	1772
40K	3.10 mi	21994+1397	15189+962	2281+132	15586	10747	1636
Finish(26.22 mi)	1.37 mi	21489+505	14833+356	2234+47	14020	9706	1545

9706

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