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BOSTON MARATHON 2023

Holly O'Sullivan

Bib: 29441•F

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
35:24
Rank: #26134
Start → 5K
35:24 | 11:24/mi
10K· 6.21 mi
1:11:08
Rank: #26059 (+75)
5K → 10K
35:44 | 11:30/mi
15K· 9.32 mi
1:44:12
Rank: #25676 (+383)
10K → 15K
33:04 | 10:39/mi
20K· 12.43 mi
2:18:22
Rank: #25408 (+268)
15K → 20K
34:10 | 11:00/mi
Half· 13.11 mi
2:25:48
Rank: #25382 (+26)
20K → Half
7:26 | 10:54/mi
25K· 15.53 mi
2:53:19
Rank: #25216 (+166)
Half → 25K
27:31 | 11:21/mi
30K· 18.64 mi
3:35:33
Rank: #25396 (-180)
25K → 30K
42:14 | 13:36/mi
20M
3:53:31
Rank: #25412 (-16)
30K → 20M
17:58 | 13:13/mi
21M
4:08:15
Rank: #25432 (-20)
20M → 21M
14:44 | 14:44/mi
35K· 21.75 mi
4:17:41
Rank: #25436 (-4)
21M → 35K
9:26 | 12:37/mi
23M
4:34:05
Rank: #25437 (-1)
35K → 23M
16:24 | 13:06/mi
24M
4:46:25
Rank: #25421 (+16)
23M → 24M
12:20 | 12:20/mi
40K· 24.85 mi
4:57:16
Rank: #25399 (+22)
24M → 40K
10:51 | 12:41/mi
25.2M
5:02:08
Rank: #25398 (+1)
40K → 25.2M
4:52 | 14:07/mi
Finish· 26.22 mi
5:13:12
Rank: #25360 (+38)
25.2M → Finish
11:04 | 10:52/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:25:48
Pace11:07 /mi
2nd Half
Distance13.11 mi
Time2:47:24
Pace12:46 /mi
📊Positive Split: 14.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:58:1935:2411:2435:24
11:24
-
10K
6.21 mi12:34:031:11:0811:2735:44
11:30
+0:06
15K
9.32 mi13:07:071:44:1211:1133:04
10:39
-0:51
20K
12.43 mi13:41:172:18:2211:0834:10
11:00
+0:21
Half
13.11 mi13:48:432:25:4811:077:26
10:54
-0:06
25K
15.53 mi14:16:142:53:1911:0927:31
11:21
+0:27
30K
18.64 mi14:58:283:35:3311:3442:14
13:36
+2:15
20M
20.00 mi15:16:263:53:3111:4117:58
13:13
-0:23
21M
21.00 mi15:31:104:08:1511:4914:44
14:44
+1:31
35K
21.75 mi15:40:364:17:4111:519:26
12:37
-2:07
23M
23.00 mi15:57:004:34:0511:5516:24
13:06
+0:29
24M
24.00 mi16:09:204:46:2511:5612:20
12:20
-0:46
40K
24.85 mi16:20:114:57:1611:5810:51
12:41
+0:21
25.2M
25.20 mi16:25:035:02:0811:594:52
14:07
+1:26
Finish
26.22 mi16:36:075:13:1211:5711:04
10:52
-3:15

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

10:39 /mi

Average Pace

11:57 /mi

Slowest Pace

14:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:04:23

59% of race

Time at Steady Pace

32:37

10% of race

Time at Slower Pace

1:36:12

31% of race

Average Pace: 11:57 /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 mi11:58:1935:2411:2435:24
11:24
#26134
10K
6.21 mi12:34:031:11:0811:2735:44
11:30
#26059
15K
9.32 mi13:07:071:44:1211:1133:04
10:39
#25676
20K
12.43 mi13:41:172:18:2211:0834:10
11:00
#25408
Half
13.11 mi13:48:432:25:4811:077:26
10:54
#25382
25K
15.53 mi14:16:142:53:1911:0927:31
11:21
#25216
30K
18.64 mi14:58:283:35:3311:3442:14
13:36
#25396
20M
20.00 mi15:16:263:53:3111:4117:58
13:13
#25412
21M
21.00 mi15:31:104:08:1511:4914:44
14:44
#25432
35K
21.75 mi15:40:364:17:4111:519:26
12:37
#25436
23M
23.00 mi15:57:004:34:0511:5516:24
13:06
#25437
24M
24.00 mi16:09:204:46:2511:5612:20
12:20
#25421
40K
24.85 mi16:20:114:57:1611:5810:51
12:41
#25399
25.2M
25.20 mi16:25:035:02:0811:594:52
14:07
#25398
Finish
26.22 mi16:36:075:13:1211:5711:04
10:52
#25360
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26134111281112824713(Top 93%)10304(Top 90%)10304(Top 211%)
10K6.21 mi3.10 mi26059+7511079+4911079+4925959(Top 98%)11014(Top 96%)11014(Top 226%)
15K9.32 mi3.11 mi25676+38310842+23710842+23724713(Top 93%)10304(Top 90%)10304(Top 211%)
20K12.43 mi3.11 mi25408+26810694+14810694+14824630(Top 93%)10272(Top 90%)10272(Top 210%)
Half13.11 mi0.68 mi25382+2610678+1610678+1624812(Top 93%)10387(Top 91%)10387(Top 213%)
25K15.53 mi2.42 mi25216+16610593+8510593+8524479(Top 92%)10219(Top 89%)10219(Top 209%)
30K18.64 mi3.11 mi25396-18010715-12210715-12225812(Top 97%)11004(Top 96%)11004(Top 225%)
20M20.00 mi1.36 mi25412-1610735-2010735-2025338(Top 95%)10772(Top 94%)10772(Top 221%)
21M21.00 mi1.00 mi25432-2010750-1510750-1525583(Top 96%)10900(Top 95%)10900(Top 223%)
35K21.75 mi0.75 mi25436-410754-410754-425280(Top 95%)10800(Top 95%)10800(Top 221%)
23M23.00 mi1.25 mi25437-110760-610760-625195(Top 95%)10740(Top 94%)10740(Top 220%)
24M24.00 mi1.00 mi25421+1610753+710753+724889(Top 93%)10626(Top 93%)10626(Top 218%)
40K24.85 mi0.85 mi25399+2210742+1110742+1124673(Top 93%)10509(Top 92%)10509(Top 215%)
25.2M25.20 mi0.35 mi25398+110746-410746-425093(Top 94%)10744(Top 94%)10744(Top 220%)
Finish26.22 mi1.02 mi25360+3810726+2010726+2023726(Top 89%)10023(Top 88%)10023(Top 205%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21stories
+97ft-345ft

Overall

24713

Females

10304

F18-39

10304

5K→10K

3.1 - 6.2 mi

Top 98%
×5stories
+79ft-138ft

Overall

25959

Females

11014

F18-39

11014

10K→15K

6.2 - 9.3 mi

Top 93%
×3stories
+67ft-78ft

Overall

24713

Females

10304

F18-39

10304

15K→20K

9.3 - 12.4 mi

Top 93%
×5stories
+106ft-86ft

Overall

24630

Females

10272

F18-39

10272

20K→Half

12.4 - 13.1 mi

Top 93%
×2stories
+19ft-37ft

Overall

24812

Females

10387

F18-39

10387

Half→25K

13.1 - 15.5 mi

Top 92%
×4stories
+66ft-88ft

Overall

24479

Females

10219

F18-39

10219

25K→30K

15.5 - 18.6 mi

Top 97%
×9stories
+181ft-148ft

Overall

25812

Females

11004

F18-39

11004

30K→20M

18.6 - 20.0 mi

Top 95%
×5stories
+64ft-50ft

Overall

25338

Females

10772

F18-39

10772

20M→21M

20.0 - 21.0 mi

Top 96%
×8stories
+106ft-24ft

Overall

25583

Females

10900

F18-39

10900

21M→35K

21.0 - 21.8 mi

Top 95%
×7stories
+17ft-86ft

Overall

25280

Females

10800

F18-39

10800

35K→23M

21.8 - 23.0 mi

Top 95%
×5stories
+23ft-63ft

Overall

25195

Females

10740

F18-39

10740

23M→24M

23.0 - 24.0 mi

Top 93%
×6stories
+12ft-82ft

Overall

24889

Females

10626

F18-39

10626

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

24673

Females

10509

F18-39

10509

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

25093

Females

10744

F18-39

10744

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2stories
+22ft-21ft

Overall

23726

Females

10023

F18-39

10023

Passing Analysis

Category:
Athletes Passed
1205
Passed By
431
Net Change
+774
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26134
5K → 10K12752+75#26134#26059
10K → 15K3863+383#26059#25676
15K → 20K2724+268#25676#25408
20K → Half315+26#25408#25382
Half → 25K1748+166#25382#25216
25K → 30K27207-180#25216#25396
30K → 20M2541-16#25396#25412
20M → 21M1939-20#25412#25432
21M → 35K1721-4#25432#25436
35K → 23M2425-1#25436#25437
23M → 24M259+16#25437#25421
24M → 40K297+22#25421#25399
40K → 25.2M76+1#25399#25398
25.2M → Finish424+38#25398#25360
TOTALS1205431+774
📊

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