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BOSTON MARATHON 2023

Michelle Brander

Bib: 21439•F

BC

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

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:41/mi
26:58
↑ 97↓ 3451.5%
10K· 6.21 mi
8:38/mi
53:47
↑ 79↓ 1380.4%
15K· 9.32 mi
8:39/mi
1:20:41
↑ 67↓ 78
20K· 12.43 mi
8:48/mi
1:48:01
↑ 106↓ 860.1%
Half· 13.11 mi
8:39/mi
1:53:55
↑ 19↓ 370.5%
25K· 15.53 mi
8:56/mi
2:15:35
↑ 66↓ 880.2%
30K· 18.64 mi
9:32/mi
2:45:12
↑ 181↓ 1480.2%
20M
9:58/mi
2:58:45
↑ 64↓ 500.2%
21M
10:14/mi
3:08:59
↑ 106↓ 241.6%
35K· 21.75 mi
10:54/mi
3:17:08
↑ 17↓ 861.7%
23M
11:48/mi
3:31:54
↑ 23↓ 630.6%
24M
10:58/mi
3:42:52
↓ 821.3%
40K· 24.85 mi
8:57/mi
3:50:31
↓ 200.3%
25.2M
9:05/mi
3:53:39
↑ 13↓ 160.2%
Finish· 26.22 mi
8:07/mi
4:01:55
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:55
Pace8:41 /mi
2nd Half
Distance13.11 mi
Time2:08:00
Pace9:46 /mi
📊Positive Split: 12.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:1426:588:4126:58
8:41
-
10K
6.21 mi11:47:0353:478:3926:49
8:38
-0:03
15K
9.32 mi12:13:571:20:418:3926:54
8:39
+0:01
20K
12.43 mi12:41:171:48:018:4227:20
8:48
+0:09
Half
13.11 mi12:47:111:53:558:415:54
8:39
-0:09
25K
15.53 mi13:08:512:15:358:4421:40
8:56
+0:17
30K
18.64 mi13:38:282:45:128:5229:37
9:32
+0:36
20M
20.00 mi13:52:012:58:458:5613:33
9:58
+0:26
21M
21.00 mi14:02:153:08:599:0010:14
10:14
+0:16
35K
21.75 mi14:10:243:17:089:048:09
10:54
+0:40
23M
23.00 mi14:25:103:31:549:1314:46
11:48
+0:54
24M
24.00 mi14:36:083:42:529:1710:58
10:58
-0:50
40K
24.85 mi14:43:473:50:319:167:39
8:57
-2:01
25.2M
25.20 mi14:46:553:53:399:163:08
9:05
+0:08
Finish
26.22 mi14:55:114:01:559:148:16
8:07
-0:58

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

8:07 /mi

Average Pace

9:14 /mi

Slowest Pace

11:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

8:16

3% of race

Time at Steady Pace

2:26:22

61% of race

Time at Slower Pace

1:27:17

36% of race

Average Pace: 9:14 /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 mi11:20:1426:588:4126:58
8:41
#18762
10K
6.21 mi11:47:0353:478:3926:49
8:38
#18846
15K
9.32 mi12:13:571:20:418:3926:54
8:39
#18794
20K
12.43 mi12:41:171:48:018:4227:20
8:48
#18749
Half
13.11 mi12:47:111:53:558:415:54
8:39
#18745
25K
15.53 mi13:08:512:15:358:4421:40
8:56
#18730
30K
18.64 mi13:38:282:45:128:5229:37
9:32
#18899
20M
20.00 mi13:52:012:58:458:5613:33
9:58
#19069
21M
21.00 mi14:02:153:08:599:0010:14
10:14
#19060
35K
21.75 mi14:10:243:17:089:048:09
10:54
#19313
23M
23.00 mi14:25:103:31:549:1314:46
11:48
#19780
24M
24.00 mi14:36:083:42:529:1710:58
10:58
#20029
40K
24.85 mi14:43:473:50:319:167:39
8:57
#19878
25.2M
25.20 mi14:46:553:53:399:163:08
9:05
#19790
Finish
26.22 mi14:55:114:01:559:148:16
8:07
#19597
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi187627052705218776(Top 71%)6965(Top 61%)6965(Top 383%)
10K6.21 mi3.10 mi18846-847043+97043+919034(Top 71%)7101(Top 62%)7101(Top 391%)
15K9.32 mi3.11 mi18794+527001+427001+4218776(Top 71%)6965(Top 61%)6965(Top 383%)
20K12.43 mi3.11 mi18749+456966+356966+3518673(Top 70%)6899(Top 60%)6899(Top 380%)
Half13.11 mi0.68 mi18745+46963+36963+318689(Top 70%)6903(Top 60%)6903(Top 380%)
25K15.53 mi2.42 mi18730+156971-86971-818664(Top 70%)6945(Top 61%)6945(Top 382%)
30K18.64 mi3.11 mi18899-1697079-1087079-10819556(Top 73%)7507(Top 66%)7507(Top 413%)
20M20.00 mi1.36 mi19069-1707191-1127191-11220412(Top 77%)8083(Top 71%)8083(Top 445%)
21M21.00 mi1.00 mi19060+97206-157206-1518838(Top 71%)7252(Top 63%)7252(Top 399%)
35K21.75 mi0.75 mi19313-2537357-1517357-15123118(Top 87%)9653(Top 85%)9653(Top 531%)
23M23.00 mi1.25 mi19780-4677634-2777634-27723698(Top 89%)9952(Top 87%)9952(Top 548%)
24M24.00 mi1.00 mi20029-2497790-1567790-15622992(Top 86%)9627(Top 84%)9627(Top 530%)
40K24.85 mi0.85 mi19878+1517710+807710+8015919(Top 60%)5817(Top 51%)5817(Top 320%)
25.2M25.20 mi0.35 mi19790+887664+467664+4613138(Top 49%)4336(Top 38%)4336(Top 239%)
Finish26.22 mi1.02 mi19597+1937560+1047560+10412914(Top 49%)4185(Top 37%)4185(Top 230%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

18776

Females

6965

F45-49

6965

5K→10K

3.1 - 6.2 mi

Top 71%
×5story building
+79ft-138ft

Overall

19034

Females

7101

F45-49

7101

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

18776

Females

6965

F45-49

6965

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

18673

Females

6899

F45-49

6899

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

18689

Females

6903

F45-49

6903

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

18664

Females

6945

F45-49

6945

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

19556

Females

7507

F45-49

7507

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

20412

Females

8083

F45-49

8083

20M→21M

20.0 - 21.0 mi

Top 71%
×8story building
+106ft-24ft

Overall

18838

Females

7252

F45-49

7252

21M→35K

21.0 - 21.8 mi

Top 87%
×7story building
+17ft-86ft

Overall

23118

Females

9653

F45-49

9653

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

23698

Females

9952

F45-49

9952

23M→24M

23.0 - 24.0 mi

Top 86%
×6story building
+12ft-82ft

Overall

22992

Females

9627

F45-49

9627

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

15919

Females

5817

F45-49

5817

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13138

Females

4336

F45-49

4336

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

12914

Females

4185

F45-49

4185

Passing Analysis

Category:
Athletes Passed
1574
Passed By
2409
Net Change
-835
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18762
5K → 10K307391-84#18762#18846
10K → 15K212160+52#18846#18794
15K → 20K183138+45#18794#18749
20K → Half3026+4#18749#18745
Half → 25K123108+15#18745#18730
25K → 30K129298-169#18730#18899
30K → 20M38208-170#18899#19069
20M → 21M8374+9#19069#19060
21M → 35K7260-253#19060#19313
35K → 23M13480-467#19313#19780
23M → 24M10259-249#19780#20029
24M → 40K1554+151#20029#19878
40K → 25.2M880+88#19878#19790
25.2M → Finish1963+193#19790#19597
TOTALS15742409-835
📊

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