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BOSTON MARATHON 2023

Holly Brown

Bib: 29815•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
29:53
Rank: #22435
Start → 5K
9:37/mi
29:53 split
10K· 6.21 mi
59:43
Rank: #22638 (-203)
5K → 10K
9:36/mi
29:50 split
15K· 9.32 mi
1:28:48
Rank: #22398 (+240)
10K → 15K
9:22/mi
29:05 split
20K· 12.43 mi
1:58:24
Rank: #22204 (+194)
15K → 20K
9:32/mi
29:36 split
Half· 13.11 mi
2:04:50
Rank: #22181 (+23)
20K → Half
9:26/mi
6:26 split
25K· 15.53 mi
2:28:40
Rank: #22095 (+86)
Half → 25K
9:50/mi
23:50 split
30K· 18.64 mi
3:03:21
Rank: #22407 (-312)
25K → 30K
11:10/mi
34:41 split
20M
3:17:38
Rank: #22362 (+45)
30K → 20M
10:31/mi
14:17 split
21M
3:31:42
Rank: #22622 (-260)
20M → 21M
14:04/mi
14:04 split
35K· 21.75 mi
3:39:17
Rank: #22563 (+59)
21M → 35K
10:08/mi
7:35 split
23M
3:52:42
Rank: #22514 (+49)
35K → 23M
10:43/mi
13:25 split
24M
4:02:55
Rank: #22476 (+38)
23M → 24M
10:13/mi
10:13 split
40K· 24.85 mi
4:11:46
Rank: #22424 (+52)
24M → 40K
10:21/mi
8:51 split
25.2M
4:15:36
Rank: #22386 (+38)
40K → 25.2M
11:07/mi
3:50 split
Finish· 26.22 mi
4:25:25
Rank: #22336 (+50)
25.2M → Finish
9:38/mi
9:49 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:50
Pace9:31 /mi
2nd Half
Distance13.11 mi
Time2:20:35
Pace10:43 /mi
📊Positive Split: 12.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:1429:539:3729:53
9:37
-
10K
6.21 mi12:18:0459:439:3729:50
9:36
-0:01
15K
9.32 mi12:47:091:28:489:3229:05
9:22
-0:14
20K
12.43 mi13:16:451:58:249:3229:36
9:32
+0:10
Half
13.11 mi13:23:112:04:509:316:26
9:26
-0:06
25K
15.53 mi13:47:012:28:409:3423:50
9:50
+0:24
30K
18.64 mi14:21:423:03:219:5034:41
11:10
+1:20
20M
20.00 mi14:35:593:17:389:5314:17
10:31
-0:39
21M
21.00 mi14:50:033:31:4210:0514:04
14:04
+3:33
35K
21.75 mi14:57:383:39:1710:057:35
10:08
-3:56
23M
23.00 mi15:11:033:52:4210:0713:25
10:43
+0:35
24M
24.00 mi15:21:164:02:5510:0710:13
10:13
-0:30
40K
24.85 mi15:30:074:11:4610:088:51
10:21
+0:08
25.2M
25.20 mi15:33:574:15:3610:093:50
11:07
+0:46
Finish
26.22 mi15:43:464:25:2510:089:49
9:38
-1:29

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

9:22 /mi

Average Pace

10:08 /mi

Slowest Pace

14:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:05:07

25% of race

Time at Steady Pace

2:14:18

51% of race

Time at Slower Pace

1:06:00

25% of race

Average Pace: 10:07 /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 mi11:48:1429:539:3729:53
9:37
#22435
10K
6.21 mi12:18:0459:439:3729:50
9:36
#22638
15K
9.32 mi12:47:091:28:489:3229:05
9:22
#22398
20K
12.43 mi13:16:451:58:249:3229:36
9:32
#22204
Half
13.11 mi13:23:112:04:509:316:26
9:26
#22181
25K
15.53 mi13:47:012:28:409:3423:50
9:50
#22095
30K
18.64 mi14:21:423:03:219:5034:41
11:10
#22407
20M
20.00 mi14:35:593:17:389:5314:17
10:31
#22362
21M
21.00 mi14:50:033:31:4210:0514:04
14:04
#22622
35K
21.75 mi14:57:383:39:1710:057:35
10:08
#22563
23M
23.00 mi15:11:033:52:4210:0713:25
10:43
#22514
24M
24.00 mi15:21:164:02:5510:0710:13
10:13
#22476
40K
24.85 mi15:30:074:11:4610:088:51
10:21
#22424
25.2M
25.20 mi15:33:574:15:3610:093:50
11:07
#22386
Finish
26.22 mi15:43:464:25:2510:089:49
9:38
#22336
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi224359100910021848(Top 82%)8707(Top 76%)8707(Top 178%)
10K6.21 mi3.10 mi22638-2039167-679167-6722810(Top 86%)9237(Top 81%)9237(Top 189%)
15K9.32 mi3.11 mi22398+2409042+1259042+12521848(Top 82%)8707(Top 76%)8707(Top 178%)
20K12.43 mi3.11 mi22204+1948939+1038939+10321648(Top 81%)8601(Top 75%)8601(Top 176%)
Half13.11 mi0.68 mi22181+238928+118928+1121941(Top 82%)8756(Top 77%)8756(Top 179%)
25K15.53 mi2.42 mi22095+868878+508878+5021824(Top 82%)8736(Top 76%)8736(Top 179%)
30K18.64 mi3.11 mi22407-3129067-1899067-18923360(Top 88%)9658(Top 85%)9658(Top 198%)
20M20.00 mi1.36 mi22362+459049+189049+1821765(Top 82%)8854(Top 78%)8854(Top 181%)
21M21.00 mi1.00 mi22622-2609212-1639212-16325088(Top 94%)10657(Top 93%)10657(Top 218%)
35K21.75 mi0.75 mi22563+599179+339179+3321649(Top 81%)8855(Top 78%)8855(Top 181%)
23M23.00 mi1.25 mi22514+499163+169163+1621806(Top 82%)8972(Top 79%)8972(Top 184%)
24M24.00 mi1.00 mi22476+389146+179146+1721389(Top 80%)8783(Top 77%)8783(Top 180%)
40K24.85 mi0.85 mi22424+529129+179129+1720887(Top 78%)8539(Top 75%)8539(Top 175%)
25.2M25.20 mi0.35 mi22386+389110+199110+1920757(Top 78%)8463(Top 74%)8463(Top 173%)
Finish26.22 mi1.02 mi22336+509088+229088+2220605(Top 77%)8356(Top 73%)8356(Top 171%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21story building
+97ft-345ft

Overall

21848

Females

8707

F18-39

8707

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

22810

Females

9237

F18-39

9237

10K→15K

6.2 - 9.3 mi

Top 82%
×3story building
+67ft-78ft

Overall

21848

Females

8707

F18-39

8707

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

21648

Females

8601

F18-39

8601

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

21941

Females

8756

F18-39

8756

Half→25K

13.1 - 15.5 mi

Top 82%
×4story building
+66ft-88ft

Overall

21824

Females

8736

F18-39

8736

25K→30K

15.5 - 18.6 mi

Top 88%
×9story building
+181ft-148ft

Overall

23360

Females

9658

F18-39

9658

30K→20M

18.6 - 20.0 mi

Top 82%
×5story building
+64ft-50ft

Overall

21765

Females

8854

F18-39

8854

20M→21M

20.0 - 21.0 mi

Top 94%
×8story building
+106ft-24ft

Overall

25088

Females

10657

F18-39

10657

21M→35K

21.0 - 21.8 mi

Top 81%
×7story building
+17ft-86ft

Overall

21649

Females

8855

F18-39

8855

35K→23M

21.8 - 23.0 mi

Top 82%
×5story building
+23ft-63ft

Overall

21806

Females

8972

F18-39

8972

23M→24M

23.0 - 24.0 mi

Top 80%
×6story building
+12ft-82ft

Overall

21389

Females

8783

F18-39

8783

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20887

Females

8539

F18-39

8539

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

20757

Females

8463

F18-39

8463

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×2story building
+22ft-21ft

Overall

20605

Females

8356

F18-39

8356

Passing Analysis

Category:
Athletes Passed
1350
Passed By
1251
Net Change
+99
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22435
5K → 10K147350-203#22435#22638
10K → 15K28444+240#22638#22398
15K → 20K24248+194#22398#22204
20K → Half3714+23#22204#22181
Half → 25K14357+86#22181#22095
25K → 30K51363-312#22095#22407
30K → 20M8035+45#22407#22362
20M → 21M10270-260#22362#22622
21M → 35K7112+59#22622#22563
35K → 23M7425+49#22563#22514
23M → 24M5618+38#22514#22476
24M → 40K6210+52#22476#22424
40K → 25.2M402+38#22424#22386
25.2M → Finish533+50#22386#22336
TOTALS13501251+99
📊

Passing Visuals

Category:
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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