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BOSTON MARATHON 2023

Kaitlyn Obrien

Bib: 11935•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 26%
Gender (Female)
#0 / 11423
Top 8%
Division (F18-39)
#0 / 4884
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:16
Rank: #9537
Start → 5K
23:16 | 7:29/mi
10K· 6.21 mi
46:43
Rank: #10213 (-676)
5K → 10K
23:27 | 7:33/mi
15K· 9.32 mi
1:09:58
Rank: #10124 (+89)
10K → 15K
23:15 | 7:29/mi
20K· 12.43 mi
1:33:21
Rank: #9935 (+189)
15K → 20K
23:23 | 7:32/mi
Half· 13.11 mi
1:38:23
Rank: #9890 (+45)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:56:37
Rank: #9711 (+179)
Half → 25K
18:14 | 7:31/mi
30K· 18.64 mi
2:19:45
Rank: #9131 (+580)
25K → 30K
23:08 | 7:27/mi
20M
2:29:40
Rank: #8817 (+314)
30K → 20M
9:55 | 7:18/mi
21M
2:37:10
Rank: #8533 (+284)
20M → 21M
7:30 | 7:30/mi
35K· 21.75 mi
2:42:18
Rank: #8358 (+175)
21M → 35K
5:08 | 6:52/mi
23M
2:51:02
Rank: #7965 (+393)
35K → 23M
8:44 | 6:59/mi
24M
2:57:50
Rank: #7698 (+267)
23M → 24M
6:48 | 6:48/mi
40K· 24.85 mi
3:03:33
Rank: #7429 (+269)
24M → 40K
5:43 | 6:41/mi
25.2M
3:05:59
Rank: #7316 (+113)
40K → 25.2M
2:26 | 7:03/mi
Finish· 26.22 mi
3:12:30
Rank: #7017 (+299)
25.2M → Finish
6:31 | 6:24/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:38:23
Pace7:30 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:34:07
Pace7:11 /mi
📊Negative Split: 4.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:5323:167:2923:16
7:29
-
10K
6.21 mi11:13:2046:437:3123:27
7:33
+0:04
15K
9.32 mi11:36:351:09:587:3023:15
7:29
-0:04
20K
12.43 mi11:59:581:33:217:3123:23
7:32
+0:03
Half
13.11 mi12:05:001:38:237:305:02
7:23
-0:09
25K
15.53 mi12:23:141:56:377:3018:14
7:31
+0:08
30K
18.64 mi12:46:222:19:457:3023:08
7:27
-0:04
20M
20.00 mi12:56:172:29:407:299:55
7:18
-0:09
21M
21.00 mi13:03:472:37:107:297:30
7:30
+0:12
35K
21.75 mi13:08:552:42:187:285:08
6:52
-0:38
23M
23.00 mi13:17:392:51:027:268:44
6:59
+0:07
24M
24.00 mi13:24:272:57:507:256:48
6:48
-0:11
40K
24.85 mi13:30:103:03:337:235:43
6:41
-0:07
25.2M
25.20 mi13:32:363:05:597:232:26
7:03
+0:22
Finish
26.22 mi13:39:073:12:307:216:31
6:24
-0:39

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

6:24 /mi

Average Pace

7:21 /mi

Slowest Pace

7:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

32:54

17% of race

Time at Steady Pace

2:39:36

83% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:21 /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 mi10:49:5323:167:2923:16
7:29
#9537
10K
6.21 mi11:13:2046:437:3123:27
7:33
#10213
15K
9.32 mi11:36:351:09:587:3023:15
7:29
#10124
20K
12.43 mi11:59:581:33:217:3123:23
7:32
#9935
Half
13.11 mi12:05:001:38:237:305:02
7:23
#9890
25K
15.53 mi12:23:141:56:377:3018:14
7:31
#9711
30K
18.64 mi12:46:222:19:457:3023:08
7:27
#9131
20M
20.00 mi12:56:172:29:407:299:55
7:18
#8817
21M
21.00 mi13:03:472:37:107:297:30
7:30
#8533
35K
21.75 mi13:08:552:42:187:285:08
6:52
#8358
23M
23.00 mi13:17:392:51:027:268:44
6:59
#7965
24M
24.00 mi13:24:272:57:507:256:48
6:48
#7698
40K
24.85 mi13:30:103:03:337:235:43
6:41
#7429
25.2M
25.20 mi13:32:363:05:597:232:26
7:03
#7316
Finish
26.22 mi13:39:073:12:307:216:31
6:24
#7017
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi95371630163010048(Top 38%)1861(Top 16%)1861(Top 38%)
10K6.21 mi3.10 mi10213-6761932-3021932-30210858(Top 41%)2232(Top 20%)2232(Top 46%)
15K9.32 mi3.11 mi10124+891872+601872+6010048(Top 38%)1861(Top 16%)1861(Top 38%)
20K12.43 mi3.11 mi9935+1891809+631809+639515(Top 36%)1689(Top 15%)1689(Top 35%)
Half13.11 mi0.68 mi9890+451785+241785+249264(Top 35%)1556(Top 14%)1556(Top 32%)
25K15.53 mi2.42 mi9711+1791730+551730+558926(Top 34%)1526(Top 13%)1526(Top 31%)
30K18.64 mi3.11 mi9131+5801535+1951535+1956872(Top 26%)887(Top 8%)887(Top 18%)
20M20.00 mi1.36 mi8817+3141431+1041431+1045649(Top 21%)614(Top 5%)614(Top 13%)
21M21.00 mi1.00 mi8533+2841351+801351+804613(Top 17%)426(Top 4%)426(Top 9%)
35K21.75 mi0.75 mi8358+1751294+571294+574620(Top 17%)427(Top 4%)427(Top 9%)
23M23.00 mi1.25 mi7965+3931174+1201174+1203686(Top 14%)283(Top 2%)283(Top 6%)
24M24.00 mi1.00 mi7698+2671089+851089+853692(Top 14%)309(Top 3%)309(Top 6%)
40K24.85 mi0.85 mi7429+2691030+591030+592328(Top 9%)170(Top 1%)170(Top 3%)
25.2M25.20 mi0.35 mi7316+113993+37993+372030(Top 8%)142(Top 1%)142(Top 3%)
Finish26.22 mi1.02 mi7017+299916+77916+772031(Top 8%)143(Top 1%)143(Top 3%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10048

Females

1861

F18-39

1861

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10858

Females

2232

F18-39

2232

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10048

Females

1861

F18-39

1861

15K→20K

9.3 - 12.4 mi

Top 36%
×5stories
+106ft-86ft

Overall

9515

Females

1689

F18-39

1689

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

9264

Females

1556

F18-39

1556

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

8926

Females

1526

F18-39

1526

25K→30K

15.5 - 18.6 mi

Top 26%
×9stories
+181ft-148ft

Overall

6872

Females

887

F18-39

887

30K→20M

18.6 - 20.0 mi

Top 21%
×5stories
+64ft-50ft

Overall

5649

Females

614

F18-39

614

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4613

Females

426

F18-39

426

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4620

Females

427

F18-39

427

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3686

Females

283

F18-39

283

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3692

Females

309

F18-39

309

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2328

Females

170

F18-39

170

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2030

Females

142

F18-39

142

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2031

Females

143

F18-39

143

Passing Analysis

Category:
Athletes Passed
3547*
Passed By
1026
Net Change
+2520
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9537
5K → 10K95770-676#9537#10213
10K → 15K219130+89#10213#10124
15K → 20K270*81+189#10124#9935
20K → Half5813+45#9935#9890
Half → 25K20425+179#9890#9711
25K → 30K584*4+580#9711#9131
30K → 20M3151+314#9131#8817
20M → 21M2851+284#8817#8533
21M → 35K1750+175#8533#8358
35K → 23M3930+393#8358#7965
23M → 24M2670+267#7965#7698
24M → 40K2690+269#7698#7429
40K → 25.2M1130+113#7429#7316
25.2M → Finish3001+299#7316#7017
TOTALS3547*1026+2520

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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