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BOSTON MARATHON 2023

Rebecca Brown

Bib: 31060•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
33:58
Rank: #25579
Start → 5K
33:58 | 10:56/mi
10K· 6.21 mi
1:08:18
Rank: #25590 (-11)
5K → 10K
34:20 | 11:03/mi
15K· 9.32 mi
1:42:37
Rank: #25458 (+132)
10K → 15K
34:19 | 11:03/mi
20K· 12.43 mi
2:18:33
Rank: #25421 (+37)
15K → 20K
35:56 | 11:34/mi
Half· 13.11 mi
2:26:22
Rank: #25424 (-3)
20K → Half
7:49 | 11:27/mi
25K· 15.53 mi
2:54:49
Rank: #25330 (+94)
Half → 25K
28:27 | 11:44/mi
30K· 18.64 mi
3:32:36
Rank: #25230 (+100)
25K → 30K
37:47 | 12:10/mi
20M
3:48:43
Rank: #25150 (+80)
30K → 20M
16:07 | 11:52/mi
21M
4:01:25
Rank: #25096 (+54)
20M → 21M
12:42 | 12:42/mi
35K· 21.75 mi
4:10:29
Rank: #25087 (+9)
21M → 35K
9:04 | 12:07/mi
23M
4:25:53
Rank: #25063 (+24)
35K → 23M
15:24 | 12:18/mi
24M
4:37:53
Rank: #25060 (+3)
23M → 24M
12:00 | 12:00/mi
40K· 24.85 mi
4:48:23
Rank: #25050 (+10)
24M → 40K
10:30 | 12:17/mi
25.2M
4:52:48
Rank: #25025 (+25)
40K → 25.2M
4:25 | 12:48/mi
Finish· 26.22 mi
5:04:27
Rank: #25023 (+2)
25.2M → Finish
11:39 | 11:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:26:22
Pace11:10 /mi
2nd Half
Distance13.11 mi
Time2:38:05
Pace12:04 /mi
📊Positive Split: 8.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:5933:5810:5633:58
10:56
-
10K
6.21 mi12:31:191:08:1811:0034:20
11:03
+0:07
15K
9.32 mi13:05:381:42:3711:0134:19
11:03
0:00
20K
12.43 mi13:41:342:18:3311:0935:56
11:34
+0:31
Half
13.11 mi13:49:232:26:2211:107:49
11:27
-0:07
25K
15.53 mi14:17:502:54:4911:1528:27
11:44
+0:17
30K
18.64 mi14:55:373:32:3611:2437:47
12:10
+0:26
20M
20.00 mi15:11:443:48:4311:2616:07
11:52
-0:18
21M
21.00 mi15:24:264:01:2511:3012:42
12:42
+0:50
35K
21.75 mi15:33:304:10:2911:319:04
12:07
-0:35
23M
23.00 mi15:48:544:25:5311:3415:24
12:18
+0:11
24M
24.00 mi16:00:544:37:5311:3512:00
12:00
-0:18
40K
24.85 mi16:11:244:48:2311:3610:30
12:17
+0:17
25.2M
25.20 mi16:15:494:52:4811:374:25
12:48
+0:31
Finish
26.22 mi16:27:285:04:2711:3711:39
11:26
-1:22

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

10:56 /mi

Average Pace

11:37 /mi

Slowest Pace

12:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:34:35

70% of race

Time at Steady Pace

1:29:52

30% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 11:37 /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 mi11:56:5933:5810:5633:58
10:56
#25579
10K
6.21 mi12:31:191:08:1811:0034:20
11:03
#25590
15K
9.32 mi13:05:381:42:3711:0134:19
11:03
#25458
20K
12.43 mi13:41:342:18:3311:0935:56
11:34
#25421
Half
13.11 mi13:49:232:26:2211:107:49
11:27
#25424
25K
15.53 mi14:17:502:54:4911:1528:27
11:44
#25330
30K
18.64 mi14:55:373:32:3611:2437:47
12:10
#25230
20M
20.00 mi15:11:443:48:4311:2616:07
11:52
#25150
21M
21.00 mi15:24:264:01:2511:3012:42
12:42
#25096
35K
21.75 mi15:33:304:10:2911:319:04
12:07
#25087
23M
23.00 mi15:48:544:25:5311:3415:24
12:18
#25063
24M
24.00 mi16:00:544:37:5311:3512:00
12:00
#25060
40K
24.85 mi16:11:244:48:2311:3610:30
12:17
#25050
25.2M
25.20 mi16:15:494:52:4811:374:25
12:48
#25025
Finish
26.22 mi16:27:285:04:2711:3711:39
11:26
#25023
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi25579107741077425256(Top 95%)10604(Top 93%)10604(Top 584%)
10K6.21 mi3.10 mi25590-1110794-2010794-2025524(Top 96%)10751(Top 94%)10751(Top 592%)
15K9.32 mi3.11 mi25458+13210711+8310711+8325256(Top 95%)10604(Top 93%)10604(Top 584%)
20K12.43 mi3.11 mi25421+3710700+1110700+1125320(Top 95%)10669(Top 93%)10669(Top 587%)
Half13.11 mi0.68 mi25424-310703-310703-325453(Top 96%)10759(Top 94%)10759(Top 592%)
25K15.53 mi2.42 mi25330+9410661+4210661+4224924(Top 94%)10475(Top 92%)10475(Top 576%)
30K18.64 mi3.11 mi25230+10010615+4610615+4624674(Top 93%)10385(Top 91%)10385(Top 572%)
20M20.00 mi1.36 mi25150+8010577+3810577+3824031(Top 90%)10102(Top 88%)10102(Top 556%)
21M21.00 mi1.00 mi25096+5410557+2010557+2023722(Top 89%)9940(Top 87%)9940(Top 547%)
35K21.75 mi0.75 mi25087+910561-410561-424803(Top 93%)10557(Top 92%)10557(Top 581%)
23M23.00 mi1.25 mi25063+2410557+410557+424370(Top 92%)10324(Top 90%)10324(Top 568%)
24M24.00 mi1.00 mi25060+3105571055724541(Top 92%)10451(Top 91%)10451(Top 575%)
40K24.85 mi0.85 mi25050+1010558-110558-124212(Top 91%)10289(Top 90%)10289(Top 566%)
25.2M25.20 mi0.35 mi25025+2510549+910549+923752(Top 89%)10067(Top 88%)10067(Top 554%)
Finish26.22 mi1.02 mi25023+210551-210551-224607(Top 92%)10461(Top 92%)10461(Top 576%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21stories
+97ft-345ft

Overall

25256

Females

10604

F45-49

10604

5K→10K

3.1 - 6.2 mi

Top 96%
×5stories
+79ft-138ft

Overall

25524

Females

10751

F45-49

10751

10K→15K

6.2 - 9.3 mi

Top 95%
×3stories
+67ft-78ft

Overall

25256

Females

10604

F45-49

10604

15K→20K

9.3 - 12.4 mi

Top 95%
×5stories
+106ft-86ft

Overall

25320

Females

10669

F45-49

10669

20K→Half

12.4 - 13.1 mi

Top 96%
×2stories
+19ft-37ft

Overall

25453

Females

10759

F45-49

10759

Half→25K

13.1 - 15.5 mi

Top 94%
×4stories
+66ft-88ft

Overall

24924

Females

10475

F45-49

10475

25K→30K

15.5 - 18.6 mi

Top 93%
×9stories
+181ft-148ft

Overall

24674

Females

10385

F45-49

10385

30K→20M

18.6 - 20.0 mi

Top 90%
×5stories
+64ft-50ft

Overall

24031

Females

10102

F45-49

10102

20M→21M

20.0 - 21.0 mi

Top 89%
×8stories
+106ft-24ft

Overall

23722

Females

9940

F45-49

9940

21M→35K

21.0 - 21.8 mi

Top 93%
×7stories
+17ft-86ft

Overall

24803

Females

10557

F45-49

10557

35K→23M

21.8 - 23.0 mi

Top 92%
×5stories
+23ft-63ft

Overall

24370

Females

10324

F45-49

10324

23M→24M

23.0 - 24.0 mi

Top 92%
×6stories
+12ft-82ft

Overall

24541

Females

10451

F45-49

10451

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

24212

Females

10289

F45-49

10289

40K→25.2M

24.9 - 25.2 mi

Top 89%
×1story
+13ft-16ft

Overall

23752

Females

10067

F45-49

10067

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2stories
+22ft-21ft

Overall

24607

Females

10461

F45-49

10461

Passing Analysis

Category:
Athletes Passed
975
Passed By
419
Net Change
+556
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25579
5K → 10K135146-11#25579#25590
10K → 15K17543+132#25590#25458
15K → 20K10164+37#25458#25421
20K → Half1114-3#25421#25424
Half → 25K11824+94#25424#25330
25K → 30K12929+100#25330#25230
30K → 20M877+80#25230#25150
20M → 21M6713+54#25150#25096
21M → 35K2112+9#25096#25087
35K → 23M4420+24#25087#25063
23M → 24M2219+3#25063#25060
24M → 40K2717+10#25060#25050
40K → 25.2M261+25#25050#25025
25.2M → Finish1210+2#25025#25023
TOTALS975419+556
📊

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