James O'Brien

San Francisco

Bib: 16668 M

Masters

0:00

0:00

/ mi

Masters

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Overall

#0 / 54109

Top 17%

Gender (Male)

#0 / 29548

Top 25%

Masters (Masters Men)

#0 / 14666

Top 20%

Division (M50-54)

#0 / 2876

Top 19%

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

7:35/mi

23:33

↑ 52 ft↓ 48 ft

601 ft elev

10K· 6.21 mi

7:30/mi

46:52

↑ 25 ft↓ 31 ft

593 ft elev

15K· 9.32 mi

7:27/mi

1:10:00

↑ 12 ft↓ 13 ft

593 ft elev

20K· 12.43 mi

7:29/mi

1:33:16

↑ 18 ft↓ 17 ft

596 ft elev

Half· 13.11 mi

7:27/mi

1:38:21

↑ 13 ft0.2% grade

603 ft elev

25K· 15.53 mi

7:26/mi

1:56:22

↑ 22 ft↓ 30 ft

597 ft elev

30K· 18.64 mi

7:26/mi

2:19:29

↑ 13 ft↓ 12 ft

597 ft elev

35K· 21.75 mi

7:58/mi

2:44:14

↑ 27 ft↓ 27 ft

597 ft elev

40K· 24.85 mi

8:13/mi

3:09:47

↑ 16 ft↓ 11 ft

602 ft elev

Finish· 26.22 mi

7:56/mi

3:20:36

↑ 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

1:38:217:30 /mi⚡ faster

2nd Half

1:42:157:48 /mi+4.0%

Positive split — 4.0% slower in the second half

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Checkpoint Splits

Checkpoint	Time	Avg Pace	Segment Length	Segment Time	Segment Pace	Diff
5K	23:33	7:35	3.11 mi	23:33	7:35	-
10K	46:52	7:33	3.10 mi	23:19	7:30	-0:05
15K	1:10:00	7:31	3.11 mi	23:08	7:27	-0:03
20K	1:33:16	7:30	3.11 mi	23:16	7:29	+0:02
Half(13.11 mi)	1:38:21	7:30	0.68 mi	5:05	7:27	-0:02
25K	1:56:22	7:29	2.42 mi	18:01	7:26	-0:01
30K	2:19:29	7:29	3.11 mi	23:07	7:26	0:00
35K	2:44:14	7:33	3.11 mi	24:45	7:58	+0:32
40K	3:09:47	7:38	3.10 mi	25:33	8:13	+0:15
Finish(26.22 mi)	3:20:36	7:39	1.37 mi	10:49	7:56	-0:17

Trend:

Faster pace

Steady pace

Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:26 /mi

Average Pace

7:39 /mi

Slowest Pace

8:13 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

2:55:03

87% of race

Time at Steady Pace

25:33

13% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:39 /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	M50-54	Seg. Overall	Seg. Males	Seg. M50-54
5K	3.11 mi	10920	8759	738	10410	8471	680
10K	3.10 mi	10539+381	8502+257	695+43	10208	8265	668
15K	3.11 mi	10432+107	8456+46	684+11	10410	8471	680
20K	3.11 mi	10215+217	8319+137	660+24	9750	7998	606
Half(13.11 mi)	0.68 mi	10127+88	8254+65	655+5	8588	7191	500
25K	2.42 mi	9861+266	8059+195	626+29	8852	7331	515
30K	3.11 mi	9360+501	7687+372	573+53	7545	6317	395
35K	3.11 mi	9306+54	7604+83	573	10148	7883	610
40K	3.10 mi	9243+63	7443+161	568+5	9804	7375	554
Finish(26.22 mi)	1.37 mi	9167+76	7347+96	559+9	9489	7034	507

7034

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