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BOSTON MARATHON 2023

Yoko Shimizu

Bib: 24222•F

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F60-64)
#0 / 527
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:07
Rank: #22642
Start → 5K
9:42/mi
30:07 split
10K· 6.21 mi
1:00:35
Rank: #23038 (-396)
5K → 10K
9:48/mi
30:28 split
15K· 9.32 mi
1:31:32
Rank: #23200 (-162)
10K → 15K
9:58/mi
30:57 split
20K· 12.43 mi
2:03:16
Rank: #23248 (-48)
15K → 20K
10:13/mi
31:44 split
Half· 13.11 mi
2:10:01
Rank: #23234 (+14)
20K → Half
9:54/mi
6:45 split
25K· 15.53 mi
2:34:51
Rank: #23111 (+123)
Half → 25K
10:15/mi
24:50 split
30K· 18.64 mi
3:07:24
Rank: #22912 (+199)
25K → 30K
10:29/mi
32:33 split
20M
3:21:19
Rank: #22768 (+144)
30K → 20M
10:14/mi
13:55 split
21M
3:32:04
Rank: #22658 (+110)
20M → 21M
10:45/mi
10:45 split
35K· 21.75 mi
3:39:18
Rank: #22567 (+91)
21M → 35K
9:40/mi
7:14 split
23M
3:51:45
Rank: #22431 (+136)
35K → 23M
9:57/mi
12:27 split
24M
4:01:25
Rank: #22342 (+89)
23M → 24M
9:40/mi
9:40 split
40K· 24.85 mi
4:09:47
Rank: #22232 (+110)
24M → 40K
9:47/mi
8:22 split
25.2M
4:13:29
Rank: #22195 (+37)
40K → 25.2M
10:44/mi
3:42 split
Finish· 26.22 mi
4:22:54
Rank: #22098 (+97)
25.2M → Finish
9:14/mi
9:25 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:10:01
Pace9:55 /mi
2nd Half
Distance13.11 mi
Time2:12:53
Pace10:08 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:2730:079:4230:07
9:42
-
10K
6.21 mi12:15:551:00:359:4530:28
9:48
+0:06
15K
9.32 mi12:46:521:31:329:4930:57
9:58
+0:10
20K
12.43 mi13:18:362:03:169:5531:44
10:13
+0:15
Half
13.11 mi13:25:212:10:019:556:45
9:54
-0:19
25K
15.53 mi13:50:112:34:519:5824:50
10:15
+0:21
30K
18.64 mi14:22:443:07:2410:0332:33
10:29
+0:14
20M
20.00 mi14:36:393:21:1910:0413:55
10:14
-0:15
21M
21.00 mi14:47:243:32:0410:0610:45
10:45
+0:31
35K
21.75 mi14:54:383:39:1810:057:14
9:40
-1:05
23M
23.00 mi15:07:053:51:4510:0512:27
9:57
+0:17
24M
24.00 mi15:16:454:01:2510:049:40
9:40
-0:17
40K
24.85 mi15:25:074:09:4710:038:22
9:47
+0:07
25.2M
25.20 mi15:28:494:13:2910:043:42
10:44
+0:57
Finish
26.22 mi15:38:144:22:5410:029:25
9:14
-1:30

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

9:14 /mi

Average Pace

10:02 /mi

Slowest Pace

10:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:25

55% of race

Time at Steady Pace

1:57:29

45% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:02 /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 mi11:45:2730:079:4230:07
9:42
#22642
10K
6.21 mi12:15:551:00:359:4530:28
9:48
#23038
15K
9.32 mi12:46:521:31:329:4930:57
9:58
#23200
20K
12.43 mi13:18:362:03:169:5531:44
10:13
#23248
Half
13.11 mi13:25:212:10:019:556:45
9:54
#23234
25K
15.53 mi13:50:112:34:519:5824:50
10:15
#23111
30K
18.64 mi14:22:443:07:2410:0332:33
10:29
#22912
20M
20.00 mi14:36:393:21:1910:0413:55
10:14
#22768
21M
21.00 mi14:47:243:32:0410:0610:45
10:45
#22658
35K
21.75 mi14:54:383:39:1810:057:14
9:40
#22567
23M
23.00 mi15:07:053:51:4510:0512:27
9:57
#22431
24M
24.00 mi15:16:454:01:2510:049:40
9:40
#22342
40K
24.85 mi15:25:074:09:4710:038:22
9:47
#22232
25.2M
25.20 mi15:28:494:13:2910:043:42
10:44
#22195
Finish
26.22 mi15:38:144:22:5410:029:25
9:14
#22098
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi226429207920723439(Top 88%)9575(Top 84%)9575(Top 1817%)
10K6.21 mi3.10 mi23038-3969385-1789385-17823284(Top 87%)9498(Top 83%)9498(Top 1802%)
15K9.32 mi3.11 mi23200-1629454-699454-6923439(Top 88%)9575(Top 84%)9575(Top 1817%)
20K12.43 mi3.11 mi23248-489482-289482-2823314(Top 88%)9521(Top 83%)9521(Top 1807%)
Half13.11 mi0.68 mi23234+149476+69476+623078(Top 87%)9391(Top 82%)9391(Top 1782%)
25K15.53 mi2.42 mi23111+1239420+569420+5622718(Top 85%)9226(Top 81%)9226(Top 1751%)
30K18.64 mi3.11 mi22912+1999334+869334+8622163(Top 83%)8989(Top 79%)8989(Top 1706%)
20M20.00 mi1.36 mi22768+1449271+639271+6321130(Top 79%)8488(Top 74%)8488(Top 1611%)
21M21.00 mi1.00 mi22658+1109229+429229+4220273(Top 76%)8080(Top 71%)8080(Top 1533%)
35K21.75 mi0.75 mi22567+919182+479182+4720408(Top 77%)8182(Top 72%)8182(Top 1553%)
23M23.00 mi1.25 mi22431+1369113+699113+6919838(Top 75%)7874(Top 69%)7874(Top 1494%)
24M24.00 mi1.00 mi22342+899069+449069+4419802(Top 74%)7873(Top 69%)7873(Top 1494%)
40K24.85 mi0.85 mi22232+1109015+549015+5419382(Top 73%)7709(Top 67%)7709(Top 1463%)
25.2M25.20 mi0.35 mi22195+378998+178998+1719845(Top 75%)7986(Top 70%)7986(Top 1515%)
Finish26.22 mi1.02 mi22098+978961+378961+3719152(Top 72%)7529(Top 66%)7529(Top 1429%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21stories
+97ft-345ft

Overall

23439

Females

9575

F60-64

9575

5K→10K

3.1 - 6.2 mi

Top 87%
×5stories
+79ft-138ft

Overall

23284

Females

9498

F60-64

9498

10K→15K

6.2 - 9.3 mi

Top 88%
×3stories
+67ft-78ft

Overall

23439

Females

9575

F60-64

9575

15K→20K

9.3 - 12.4 mi

Top 88%
×5stories
+106ft-86ft

Overall

23314

Females

9521

F60-64

9521

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

23078

Females

9391

F60-64

9391

Half→25K

13.1 - 15.5 mi

Top 85%
×4stories
+66ft-88ft

Overall

22718

Females

9226

F60-64

9226

25K→30K

15.5 - 18.6 mi

Top 83%
×9stories
+181ft-148ft

Overall

22163

Females

8989

F60-64

8989

30K→20M

18.6 - 20.0 mi

Top 79%
×5stories
+64ft-50ft

Overall

21130

Females

8488

F60-64

8488

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

20273

Females

8080

F60-64

8080

21M→35K

21.0 - 21.8 mi

Top 77%
×7stories
+17ft-86ft

Overall

20408

Females

8182

F60-64

8182

35K→23M

21.8 - 23.0 mi

Top 75%
×5stories
+23ft-63ft

Overall

19838

Females

7874

F60-64

7874

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

19802

Females

7873

F60-64

7873

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

19382

Females

7709

F60-64

7709

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

19845

Females

7986

F60-64

7986

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2stories
+22ft-21ft

Overall

19152

Females

7529

F60-64

7529

Passing Analysis

Category:
Athletes Passed
1564
Passed By
1020
Net Change
+544
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22642
5K → 10K86482-396#22642#23038
10K → 15K83245-162#23038#23200
15K → 20K100148-48#23200#23248
20K → Half3824+14#23248#23234
Half → 25K16744+123#23234#23111
25K → 30K23435+199#23111#22912
30K → 20M1539+144#22912#22768
20M → 21M1188+110#22768#22658
21M → 35K976+91#22658#22567
35K → 23M1393+136#22567#22431
23M → 24M967+89#22431#22342
24M → 40K1111+110#22342#22232
40K → 25.2M414+37#22232#22195
25.2M → Finish1014+97#22195#22098
TOTALS15641020+544
📊

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