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BOSTON MARATHON 2023

Sandra Sheehy

Bib: 23171•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 (F55-59)
#0 / 815
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
8:47/mi
27:17
↑ 97↓ 3451.5%
10K· 6.21 mi
8:30/mi
53:42
↑ 79↓ 1380.4%
15K· 9.32 mi
8:36/mi
1:20:25
↑ 67↓ 78
20K· 12.43 mi
8:59/mi
1:48:21
↑ 106↓ 860.1%
Half· 13.11 mi
8:42/mi
1:54:17
↑ 19↓ 370.5%
25K· 15.53 mi
9:28/mi
2:17:14
↑ 66↓ 880.2%
30K· 18.64 mi
10:16/mi
2:49:09
↑ 181↓ 1480.2%
20M
11:16/mi
3:04:28
↑ 64↓ 500.2%
21M
12:17/mi
3:16:45
↑ 106↓ 241.6%
35K· 21.75 mi
9:44/mi
3:24:02
↑ 17↓ 861.7%
23M
10:52/mi
3:37:38
↑ 23↓ 630.6%
24M
10:40/mi
3:48:18
↓ 821.3%
40K· 24.85 mi
10:56/mi
3:57:39
↓ 200.3%
25.2M
11:33/mi
4:01:38
↑ 13↓ 160.2%
Finish· 26.22 mi
10:32/mi
4:12:22
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:17
Pace8:43 /mi
2nd Half
Distance13.11 mi
Time2:18:05
Pace10:32 /mi
📊Positive Split: 20.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:5127:178:4727:17
8:47
-
10K
6.21 mi11:49:1653:428:3926:25
8:30
-0:17
15K
9.32 mi12:15:591:20:258:3826:43
8:36
+0:06
20K
12.43 mi12:43:551:48:218:4327:56
8:59
+0:23
Half
13.11 mi12:49:511:54:178:435:56
8:42
-0:17
25K
15.53 mi13:12:482:17:148:5022:57
9:28
+0:46
30K
18.64 mi13:44:432:49:099:0431:55
10:16
+0:48
20M
20.00 mi14:00:023:04:289:1315:19
11:16
+1:00
21M
21.00 mi14:12:193:16:459:2212:17
12:17
+1:01
35K
21.75 mi14:19:363:24:029:237:17
9:44
-2:33
23M
23.00 mi14:33:123:37:389:2813:36
10:52
+1:08
24M
24.00 mi14:43:523:48:189:3110:40
10:40
-0:12
40K
24.85 mi14:53:133:57:399:349:21
10:56
+0:16
25.2M
25.20 mi14:57:124:01:389:353:59
11:33
+0:37
Finish
26.22 mi15:07:564:12:229:3810:44
10:32
-1:01

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

8:30 /mi

Average Pace

9:38 /mi

Slowest Pace

12:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:14

54% of race

Time at Steady Pace

1:00:36

24% of race

Time at Slower Pace

54:32

22% of race

Average Pace: 9:37 /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 mi11:22:5127:178:4727:17
8:47
#19375
10K
6.21 mi11:49:1653:428:3926:25
8:30
#18764
15K
9.32 mi12:15:591:20:258:3826:43
8:36
#18627
20K
12.43 mi12:43:551:48:218:4327:56
8:59
#18896
Half
13.11 mi12:49:511:54:178:435:56
8:42
#18902
25K
15.53 mi13:12:482:17:148:5022:57
9:28
#19284
30K
18.64 mi13:44:432:49:099:0431:55
10:16
#19941
20M
20.00 mi14:00:023:04:289:1315:19
11:16
#20343
21M
21.00 mi14:12:193:16:459:2212:17
12:17
#20573
35K
21.75 mi14:19:363:24:029:237:17
9:44
#20568
23M
23.00 mi14:33:123:37:389:2813:36
10:52
#20676
24M
24.00 mi14:43:523:48:189:3110:40
10:40
#20761
40K
24.85 mi14:53:133:57:399:349:21
10:56
#20828
25.2M
25.20 mi14:57:124:01:389:353:59
11:33
#20837
Finish
26.22 mi15:07:564:12:229:3810:44
10:32
#20927
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi193757426742618460(Top 69%)6775(Top 59%)6775(Top 831%)
10K6.21 mi3.10 mi18764+6116986+4406986+44018287(Top 69%)6654(Top 58%)6654(Top 816%)
15K9.32 mi3.11 mi18627+1376900+866900+8618460(Top 69%)6775(Top 59%)6775(Top 831%)
20K12.43 mi3.11 mi18896-2697061-1617061-16119665(Top 74%)7483(Top 66%)7483(Top 918%)
Half13.11 mi0.68 mi18902-67065-47065-419002(Top 71%)7101(Top 62%)7101(Top 871%)
25K15.53 mi2.42 mi19284-3827295-2307295-23020737(Top 78%)8126(Top 71%)8126(Top 997%)
30K18.64 mi3.11 mi19941-6577699-4047699-40421719(Top 82%)8750(Top 77%)8750(Top 1074%)
20M20.00 mi1.36 mi20343-4027938-2397938-23923137(Top 87%)9588(Top 84%)9588(Top 1176%)
21M21.00 mi1.00 mi20573-2308070-1328070-13223166(Top 87%)9630(Top 84%)9630(Top 1182%)
35K21.75 mi0.75 mi20568+58073-38073-320578(Top 77%)8259(Top 72%)8259(Top 1013%)
23M23.00 mi1.25 mi20676-1088154-818154-8122086(Top 83%)9111(Top 80%)9111(Top 1118%)
24M24.00 mi1.00 mi20761-858211-578211-5722383(Top 84%)9302(Top 81%)9302(Top 1141%)
40K24.85 mi0.85 mi20828-678258-478258-4722223(Top 83%)9249(Top 81%)9249(Top 1135%)
25.2M25.20 mi0.35 mi20837-98269-118269-1121685(Top 81%)8952(Top 78%)8952(Top 1098%)
Finish26.22 mi1.02 mi20927-908331-628331-6223072(Top 87%)9681(Top 85%)9681(Top 1188%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

18460

Females

6775

F55-59

6775

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

18287

Females

6654

F55-59

6654

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

18460

Females

6775

F55-59

6775

15K→20K

9.3 - 12.4 mi

Top 74%
×5story building
+106ft-86ft

Overall

19665

Females

7483

F55-59

7483

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

19002

Females

7101

F55-59

7101

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

20737

Females

8126

F55-59

8126

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

21719

Females

8750

F55-59

8750

30K→20M

18.6 - 20.0 mi

Top 87%
×5story building
+64ft-50ft

Overall

23137

Females

9588

F55-59

9588

20M→21M

20.0 - 21.0 mi

Top 87%
×8story building
+106ft-24ft

Overall

23166

Females

9630

F55-59

9630

21M→35K

21.0 - 21.8 mi

Top 77%
×7story building
+17ft-86ft

Overall

20578

Females

8259

F55-59

8259

35K→23M

21.8 - 23.0 mi

Top 83%
×5story building
+23ft-63ft

Overall

22086

Females

9111

F55-59

9111

23M→24M

23.0 - 24.0 mi

Top 84%
×6story building
+12ft-82ft

Overall

22383

Females

9302

F55-59

9302

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

22223

Females

9249

F55-59

9249

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

21685

Females

8952

F55-59

8952

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

23072

Females

9681

F55-59

9681

Passing Analysis

Category:
Athletes Passed
1407
Passed By
2959
Net Change
-1552
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19375
5K → 10K757146+611#19375#18764
10K → 15K256119+137#18764#18627
15K → 20K86355-269#18627#18896
20K → Half2430-6#18896#18902
Half → 25K50432-382#18902#19284
25K → 30K38695-657#19284#19941
30K → 20M20422-402#19941#20343
20M → 21M18248-230#20343#20573
21M → 35K4540+5#20573#20568
35K → 23M42150-108#20568#20676
23M → 24M20105-85#20676#20761
24M → 40K1885-67#20761#20828
40K → 25.2M918-9#20828#20837
25.2M → Finish24114-90#20837#20927
TOTALS14072959-1552
📊

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