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BOSTON MARATHON 2023

Kasey O'Hara

Bib: 12781•F

NV

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 21%
Gender (Female)
#0 / 11423
Top 4%
Division (F18-39)
#0 / 4884
Top 8%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:54
Rank: #6564
Start → 5K
21:54 | 7:03/mi
10K· 6.21 mi
43:13
Rank: #6244 (+320)
5K → 10K
21:19 | 6:52/mi
15K· 9.32 mi
1:04:50
Rank: #6232 (+12)
10K → 15K
21:37 | 6:57/mi
20K· 12.43 mi
1:26:27
Rank: #6083 (+149)
15K → 20K
21:37 | 6:57/mi
Half· 13.11 mi
1:31:09
Rank: #6079 (+4)
20K → Half
4:42 | 6:53/mi
25K· 15.53 mi
1:48:04
Rank: #5954 (+125)
Half → 25K
16:55 | 6:59/mi
30K· 18.64 mi
2:10:23
Rank: #5770 (+184)
25K → 30K
22:19 | 7:11/mi
20M
2:20:20
Rank: #5749 (+21)
30K → 20M
9:57 | 7:19/mi
21M
2:28:15
Rank: #5761 (-12)
20M → 21M
7:55 | 7:55/mi
35K· 21.75 mi
2:33:28
Rank: #5725 (+36)
21M → 35K
5:13 | 6:58/mi
23M
2:42:33
Rank: #5633 (+92)
35K → 23M
9:05 | 7:15/mi
24M
2:49:39
Rank: #5563 (+70)
23M → 24M
7:06 | 7:06/mi
40K· 24.85 mi
2:55:55
Rank: #5513 (+50)
24M → 40K
6:16 | 7:20/mi
25.2M
2:58:36
Rank: #5486 (+27)
40K → 25.2M
2:41 | 7:47/mi
Finish· 26.22 mi
3:06:03
Rank: #5493 (-7)
25.2M → Finish
7:27 | 7:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:09
Pace6:57 /mi
2nd Half
Distance13.11 mi
Time1:34:54
Pace7:14 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:0721:547:0321:54
7:03
-
10K
6.21 mi11:10:2643:136:5721:19
6:52
-0:11
15K
9.32 mi11:32:031:04:506:5721:37
6:57
+0:05
20K
12.43 mi11:53:401:26:276:5721:37
6:57
0:00
Half
13.11 mi11:58:221:31:096:574:42
6:53
-0:04
25K
15.53 mi12:15:171:48:046:5716:55
6:59
+0:06
30K
18.64 mi12:37:362:10:237:0022:19
7:11
+0:12
20M
20.00 mi12:47:332:20:207:019:57
7:19
+0:08
21M
21.00 mi12:55:282:28:157:047:55
7:55
+0:36
35K
21.75 mi13:00:412:33:287:035:13
6:58
-0:57
23M
23.00 mi13:09:462:42:337:049:05
7:15
+0:17
24M
24.00 mi13:16:522:49:397:047:06
7:06
-0:09
40K
24.85 mi13:23:082:55:557:056:16
7:20
+0:14
25.2M
25.20 mi13:25:492:58:367:052:41
7:47
+0:27
Finish
26.22 mi13:33:163:06:037:067:27
7:19
-0:28

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

6:52 /mi

Average Pace

7:06 /mi

Slowest Pace

7:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:55:27

94% of race

Time at Steady Pace

10:36

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:06 /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 mi10:49:0721:547:0321:54
7:03
#6564
10K
6.21 mi11:10:2643:136:5721:19
6:52
#6244
15K
9.32 mi11:32:031:04:506:5721:37
6:57
#6232
20K
12.43 mi11:53:401:26:276:5721:37
6:57
#6083
Half
13.11 mi11:58:221:31:096:574:42
6:53
#6079
25K
15.53 mi12:15:171:48:046:5716:55
6:59
#5954
30K
18.64 mi12:37:362:10:237:0022:19
7:11
#5770
20M
20.00 mi12:47:332:20:207:019:57
7:19
#5749
21M
21.00 mi12:55:282:28:157:047:55
7:55
#5761
35K
21.75 mi13:00:412:33:287:035:13
6:58
#5725
23M
23.00 mi13:09:462:42:337:049:05
7:15
#5633
24M
24.00 mi13:16:522:49:397:047:06
7:06
#5563
40K
24.85 mi13:23:082:55:557:056:16
7:20
#5513
25.2M
25.20 mi13:25:492:58:367:052:41
7:47
#5486
Finish
26.22 mi13:33:163:06:037:067:27
7:19
#5493
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi65646196196314(Top 24%)600(Top 5%)600(Top 12%)
10K6.21 mi3.10 mi6244+320563+56563+565856(Top 22%)502(Top 4%)502(Top 10%)
15K9.32 mi3.11 mi6232+12566-3566-36314(Top 24%)600(Top 5%)600(Top 12%)
20K12.43 mi3.11 mi6083+149538+28538+285722(Top 21%)470(Top 4%)470(Top 10%)
Half13.11 mi0.68 mi6079+4531+7531+75982(Top 22%)502(Top 4%)502(Top 10%)
25K15.53 mi2.42 mi5954+125504+27504+275456(Top 20%)430(Top 4%)430(Top 9%)
30K18.64 mi3.11 mi5770+184476+28476+285413(Top 20%)482(Top 4%)482(Top 10%)
20M20.00 mi1.36 mi5749+21484-8484-85777(Top 22%)639(Top 6%)639(Top 13%)
21M21.00 mi1.00 mi5761-12493-9493-96847(Top 26%)1066(Top 9%)1066(Top 22%)
35K21.75 mi0.75 mi5725+36489+4489+45235(Top 20%)556(Top 5%)556(Top 11%)
23M23.00 mi1.25 mi5633+92484+5484+55091(Top 19%)552(Top 5%)552(Top 11%)
24M24.00 mi1.00 mi5563+70483+1483+15220(Top 20%)629(Top 6%)629(Top 13%)
40K24.85 mi0.85 mi5513+50484-1484-15663(Top 21%)853(Top 7%)853(Top 17%)
25.2M25.20 mi0.35 mi5486+27480+4480+45332(Top 20%)824(Top 7%)824(Top 17%)
Finish26.22 mi1.02 mi5493-7495-15495-157210(Top 27%)1503(Top 13%)1503(Top 31%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21stories
+97ft-345ft

Overall

6314

Females

600

F18-39

600

5K→10K

3.1 - 6.2 mi

Top 22%
×5stories
+79ft-138ft

Overall

5856

Females

502

F18-39

502

10K→15K

6.2 - 9.3 mi

Top 24%
×3stories
+67ft-78ft

Overall

6314

Females

600

F18-39

600

15K→20K

9.3 - 12.4 mi

Top 21%
×5stories
+106ft-86ft

Overall

5722

Females

470

F18-39

470

20K→Half

12.4 - 13.1 mi

Top 22%
×2stories
+19ft-37ft

Overall

5982

Females

502

F18-39

502

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5456

Females

430

F18-39

430

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5413

Females

482

F18-39

482

30K→20M

18.6 - 20.0 mi

Top 22%
×5stories
+64ft-50ft

Overall

5777

Females

639

F18-39

639

20M→21M

20.0 - 21.0 mi

Top 26%
×8stories
+106ft-24ft

Overall

6847

Females

1066

F18-39

1066

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5235

Females

556

F18-39

556

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

5091

Females

552

F18-39

552

23M→24M

23.0 - 24.0 mi

Top 20%
×6stories
+12ft-82ft

Overall

5220

Females

629

F18-39

629

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5663

Females

853

F18-39

853

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5332

Females

824

F18-39

824

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

7210

Females

1503

F18-39

1503

Passing Analysis

Category:
Athletes Passed
1612
Passed By
541
Net Change
+1071
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6564
5K → 10K39979+320#6564#6244
10K → 15K121109+12#6244#6232
15K → 20K18637+149#6232#6083
20K → Half1713+4#6083#6079
Half → 25K14419+125#6079#5954
25K → 30K22238+184#5954#5770
30K → 20M7352+21#5770#5749
20M → 21M5264-12#5749#5761
21M → 35K4913+36#5761#5725
35K → 23M11220+92#5725#5633
23M → 24M8313+70#5633#5563
24M → 40K6818+50#5563#5513
40K → 25.2M358+27#5513#5486
25.2M → Finish5158-7#5486#5493
TOTALS1612541+1071
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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