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BOSTON MARATHON 2023

Jamie O'Brien

Bib: 9726•F

GA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 19%
Gender (Female)
#0 / 11423
Top 4%
Masters (Masters Women)
#0 / 6539
Top 1%
Division (F40-44)
#0 / 1878
Top 3%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:24
Rank: #5484
Start → 5K
21:24 | 6:53/mi
10K· 6.21 mi
42:41
Rank: #5592 (-108)
5K → 10K
21:17 | 6:51/mi
15K· 9.32 mi
1:04:09
Rank: #5728 (-136)
10K → 15K
21:28 | 6:55/mi
20K· 12.43 mi
1:26:02
Rank: #5853 (-125)
15K → 20K
21:53 | 7:03/mi
Half· 13.11 mi
1:30:41
Rank: #5830 (+23)
20K → Half
4:39 | 6:49/mi
25K· 15.53 mi
1:47:54
Rank: #5886 (-56)
Half → 25K
17:13 | 7:06/mi
30K· 18.64 mi
2:10:17
Rank: #5744 (+142)
25K → 30K
22:23 | 7:12/mi
20M
2:20:07
Rank: #5686 (+58)
30K → 20M
9:50 | 7:14/mi
21M
2:27:38
Rank: #5600 (+86)
20M → 21M
7:31 | 7:31/mi
35K· 21.75 mi
2:32:46
Rank: #5530 (+70)
21M → 35K
5:08 | 6:52/mi
23M
2:41:37
Rank: #5383 (+147)
35K → 23M
8:51 | 7:04/mi
24M
2:48:40
Rank: #5321 (+62)
23M → 24M
7:03 | 7:03/mi
40K· 24.85 mi
2:54:46
Rank: #5234 (+87)
24M → 40K
6:06 | 7:08/mi
25.2M
2:57:30
Rank: #5230 (+4)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
3:04:30
Rank: #5154 (+76)
25.2M → Finish
7:00 | 6:52/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:41
Pace6:55 /mi
2nd Half
Distance13.11 mi
Time1:33:49
Pace7:09 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:1121:246:5321:24
6:53
-
10K
6.21 mi11:08:2842:416:5221:17
6:51
-0:02
15K
9.32 mi11:29:561:04:096:5321:28
6:55
+0:04
20K
12.43 mi11:51:491:26:026:5521:53
7:03
+0:08
Half
13.11 mi11:56:281:30:416:554:39
6:49
-0:14
25K
15.53 mi12:13:411:47:546:5717:13
7:06
+0:17
30K
18.64 mi12:36:042:10:176:5922:23
7:12
+0:06
20M
20.00 mi12:45:542:20:077:009:50
7:14
+0:02
21M
21.00 mi12:53:252:27:387:027:31
7:31
+0:17
35K
21.75 mi12:58:332:32:467:015:08
6:52
-0:39
23M
23.00 mi13:07:242:41:377:028:51
7:04
+0:12
24M
24.00 mi13:14:272:48:407:027:03
7:03
-0:01
40K
24.85 mi13:20:332:54:467:026:06
7:08
+0:05
25.2M
25.20 mi13:23:172:57:307:032:44
7:56
+0:48
Finish
26.22 mi13:30:173:04:307:037:00
6:52
-1:04

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

6:49 /mi

Average Pace

7:03 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:54:15

94% of race

Time at Steady Pace

10:15

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:02 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:47:1121:246:5321:24
6:53
#5484
10K
6.21 mi11:08:2842:416:5221:17
6:51
#5592
15K
9.32 mi11:29:561:04:096:5321:28
6:55
#5728
20K
12.43 mi11:51:491:26:026:5521:53
7:03
#5853
Half
13.11 mi11:56:281:30:416:554:39
6:49
#5830
25K
15.53 mi12:13:411:47:546:5717:13
7:06
#5886
30K
18.64 mi12:36:042:10:176:5922:23
7:12
#5744
20M
20.00 mi12:45:542:20:077:009:50
7:14
#5686
21M
21.00 mi12:53:252:27:387:027:31
7:31
#5600
35K
21.75 mi12:58:332:32:467:015:08
6:52
#5530
23M
23.00 mi13:07:242:41:377:028:51
7:04
#5383
24M
24.00 mi13:14:272:48:407:027:03
7:03
#5321
40K
24.85 mi13:20:332:54:467:026:06
7:08
#5234
25.2M
25.20 mi13:23:172:57:307:032:44
7:56
#5230
Finish
26.22 mi13:30:173:04:307:037:00
6:52
#5154
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi54844164166032(Top 23%)537(Top 5%)537(Top 29%)
10K6.21 mi3.10 mi5592-108433-17433-175775(Top 22%)485(Top 4%)485(Top 26%)
15K9.32 mi3.11 mi5728-136461-28461-286032(Top 23%)537(Top 5%)537(Top 29%)
20K12.43 mi3.11 mi5853-125482-21482-216251(Top 23%)584(Top 5%)584(Top 31%)
Half13.11 mi0.68 mi5830+23476+6476+65474(Top 21%)422(Top 4%)422(Top 22%)
25K15.53 mi2.42 mi5886-56490-14490-146125(Top 23%)585(Top 5%)585(Top 31%)
30K18.64 mi3.11 mi5744+142472+18472+185540(Top 21%)512(Top 4%)512(Top 27%)
20M20.00 mi1.36 mi5686+584724725316(Top 20%)524(Top 5%)524(Top 28%)
21M21.00 mi1.00 mi5600+86458+14458+144688(Top 18%)439(Top 4%)439(Top 23%)
35K21.75 mi0.75 mi5530+70450+8450+84611(Top 17%)418(Top 4%)418(Top 22%)
23M23.00 mi1.25 mi5383+147440+10440+104164(Top 16%)348(Top 3%)348(Top 19%)
24M24.00 mi1.00 mi5321+62438+2438+24945(Top 19%)555(Top 5%)555(Top 30%)
40K24.85 mi0.85 mi5234+87432+6432+64576(Top 17%)526(Top 5%)526(Top 28%)
25.2M25.20 mi0.35 mi5230+4434-2434-26120(Top 23%)1070(Top 9%)1070(Top 57%)
Finish26.22 mi1.02 mi5154+76430+4430+44482(Top 17%)575(Top 5%)575(Top 31%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6032

Females

537

F40-44

537

5K→10K

3.1 - 6.2 mi

Top 22%
×5stories
+79ft-138ft

Overall

5775

Females

485

F40-44

485

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6032

Females

537

F40-44

537

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

6251

Females

584

F40-44

584

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5474

Females

422

F40-44

422

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6125

Females

585

F40-44

585

25K→30K

15.5 - 18.6 mi

Top 21%
×9stories
+181ft-148ft

Overall

5540

Females

512

F40-44

512

30K→20M

18.6 - 20.0 mi

Top 20%
×5stories
+64ft-50ft

Overall

5316

Females

524

F40-44

524

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4688

Females

439

F40-44

439

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4611

Females

418

F40-44

418

35K→23M

21.8 - 23.0 mi

Top 16%
×5stories
+23ft-63ft

Overall

4164

Females

348

F40-44

348

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

4945

Females

555

F40-44

555

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4576

Females

526

F40-44

526

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6120

Females

1070

F40-44

1070

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4482

Females

575

F40-44

575

Passing Analysis

Category:
Athletes Passed
1275
Passed By
945
Net Change
+330
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5484
5K → 10K158266-108#5484#5592
10K → 15K63199-136#5592#5728
15K → 20K64189-125#5728#5853
20K → Half329+23#5853#5830
Half → 25K55111-56#5830#5886
25K → 30K19553+142#5886#5744
30K → 20M8426+58#5744#5686
20M → 21M10014+86#5686#5600
21M → 35K744+70#5600#5530
35K → 23M1558+147#5530#5383
23M → 24M8018+62#5383#5321
24M → 40K9710+87#5321#5234
40K → 25.2M2622+4#5234#5230
25.2M → Finish9216+76#5230#5154
TOTALS1275945+330
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing