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BOSTON MARATHON 2023

Cheryl Tamashiro

Bib: 21157•F

HI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 50%
Masters (Masters Women)
#0 / 6539
Top 40%
Division (F60-64)
#0 / 527
Top 11%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:41
Rank: #18161
Start → 5K
8:35/mi
26:41 split
10K· 6.21 mi
51:58
Rank: #16946 (+1215)
5K → 10K
8:08/mi
25:17 split
15K· 9.32 mi
1:17:05
Rank: #16303 (+643)
10K → 15K
8:05/mi
25:07 split
20K· 12.43 mi
1:43:17
Rank: #16368 (-65)
15K → 20K
8:26/mi
26:12 split
Half· 13.11 mi
1:48:52
Rank: #16321 (+47)
20K → Half
8:11/mi
5:35 split
25K· 15.53 mi
2:09:20
Rank: #16228 (+93)
Half → 25K
8:26/mi
20:28 split
30K· 18.64 mi
2:36:16
Rank: #16041 (+187)
25K → 30K
8:40/mi
26:56 split
20M
2:48:03
Rank: #15922 (+119)
30K → 20M
8:40/mi
11:47 split
21M
2:57:32
Rank: #15894 (+28)
20M → 21M
9:29/mi
9:29 split
35K· 21.75 mi
3:03:54
Rank: #15833 (+61)
21M → 35K
8:31/mi
6:22 split
23M
3:15:08
Rank: #15841 (-8)
35K → 23M
8:58/mi
11:14 split
24M
3:23:55
Rank: #15863 (-22)
23M → 24M
8:47/mi
8:47 split
40K· 24.85 mi
3:32:15
Rank: #16018 (-155)
24M → 40K
9:45/mi
8:20 split
25.2M
3:35:34
Rank: #16012 (+6)
40K → 25.2M
9:37/mi
3:19 split
Finish· 26.22 mi
3:45:56
Rank: #16355 (-343)
25.2M → Finish
10:10/mi
10:22 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:52
Pace8:18 /mi
2nd Half
Distance13.11 mi
Time1:57:04
Pace8:56 /mi
📊Positive Split: 7.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3526:418:3526:41
8:35
-
10K
6.21 mi11:44:5251:588:2225:17
8:08
-0:27
15K
9.32 mi12:09:591:17:058:1625:07
8:05
-0:03
20K
12.43 mi12:36:111:43:178:1926:12
8:26
+0:21
Half
13.11 mi12:41:461:48:528:185:35
8:11
-0:15
25K
15.53 mi13:02:142:09:208:2020:28
8:26
+0:15
30K
18.64 mi13:29:102:36:168:2326:56
8:40
+0:14
20M
20.00 mi13:40:572:48:038:2411:47
8:40
0:00
21M
21.00 mi13:50:262:57:328:279:29
9:29
+0:49
35K
21.75 mi13:56:483:03:548:276:22
8:31
-0:58
23M
23.00 mi14:08:023:15:088:2911:14
8:58
+0:27
24M
24.00 mi14:16:493:23:558:308:47
8:47
-0:11
40K
24.85 mi14:25:093:32:158:328:20
9:45
+0:58
25.2M
25.20 mi14:28:283:35:348:333:19
9:37
-0:08
Finish
26.22 mi14:38:503:45:568:3710:22
10:10
+0:33

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

8:05 /mi

Average Pace

8:37 /mi

Slowest Pace

10:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

55:59

25% of race

Time at Steady Pace

2:18:27

61% of race

Time at Slower Pace

31:30

14% of race

Average Pace: 8:37 /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 mi11:19:3526:418:3526:41
8:35
#18161
10K
6.21 mi11:44:5251:588:2225:17
8:08
#16946
15K
9.32 mi12:09:591:17:058:1625:07
8:05
#16303
20K
12.43 mi12:36:111:43:178:1926:12
8:26
#16368
Half
13.11 mi12:41:461:48:528:185:35
8:11
#16321
25K
15.53 mi13:02:142:09:208:2020:28
8:26
#16228
30K
18.64 mi13:29:102:36:168:2326:56
8:40
#16041
20M
20.00 mi13:40:572:48:038:2411:47
8:40
#15922
21M
21.00 mi13:50:262:57:328:279:29
9:29
#15894
35K
21.75 mi13:56:483:03:548:276:22
8:31
#15833
23M
23.00 mi14:08:023:15:088:2911:14
8:58
#15841
24M
24.00 mi14:16:493:23:558:308:47
8:47
#15863
40K
24.85 mi14:25:093:32:158:328:20
9:45
#16018
25.2M
25.20 mi14:28:283:35:348:333:19
9:37
#16012
Finish
26.22 mi14:38:503:45:568:3710:22
10:10
#16355
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi181616656665615076(Top 57%)4720(Top 41%)4720(Top 896%)
10K6.21 mi3.10 mi16946+12155880+7765880+77615812(Top 59%)5154(Top 45%)5154(Top 978%)
15K9.32 mi3.11 mi16303+6435468+4125468+41215076(Top 57%)4720(Top 41%)4720(Top 896%)
20K12.43 mi3.11 mi16368-655534-665534-6616459(Top 62%)5623(Top 49%)5623(Top 1067%)
Half13.11 mi0.68 mi16321+475505+295505+2915770(Top 59%)5176(Top 45%)5176(Top 982%)
25K15.53 mi2.42 mi16228+935474+315474+3115868(Top 60%)5364(Top 47%)5364(Top 1018%)
30K18.64 mi3.11 mi16041+1875400+745400+7415337(Top 58%)5137(Top 45%)5137(Top 975%)
20M20.00 mi1.36 mi15922+1195351+495351+4914714(Top 55%)4841(Top 42%)4841(Top 919%)
21M21.00 mi1.00 mi15894+285352-15352-115910(Top 60%)5581(Top 49%)5581(Top 1059%)
35K21.75 mi0.75 mi15833+615331+215331+2115420(Top 58%)5365(Top 47%)5365(Top 1018%)
23M23.00 mi1.25 mi15841-85363-325363-3215937(Top 60%)5707(Top 50%)5707(Top 1083%)
24M24.00 mi1.00 mi15863-225395-325395-3216125(Top 61%)5875(Top 51%)5875(Top 1115%)
40K24.85 mi0.85 mi16018-1555487-925487-9219185(Top 72%)7584(Top 66%)7584(Top 1439%)
25.2M25.20 mi0.35 mi16012+65488-15488-115790(Top 59%)5746(Top 50%)5746(Top 1090%)
Finish26.22 mi1.02 mi16355-3435692-2045692-20422222(Top 83%)9239(Top 81%)9239(Top 1753%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

15076

Females

4720

F60-64

4720

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

15812

Females

5154

F60-64

5154

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

15076

Females

4720

F60-64

4720

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

16459

Females

5623

F60-64

5623

20K→Half

12.4 - 13.1 mi

Top 59%
×2story building
+19ft-37ft

Overall

15770

Females

5176

F60-64

5176

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

15868

Females

5364

F60-64

5364

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

15337

Females

5137

F60-64

5137

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

14714

Females

4841

F60-64

4841

20M→21M

20.0 - 21.0 mi

Top 60%
×8story building
+106ft-24ft

Overall

15910

Females

5581

F60-64

5581

21M→35K

21.0 - 21.8 mi

Top 58%
×7story building
+17ft-86ft

Overall

15420

Females

5365

F60-64

5365

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

15937

Females

5707

F60-64

5707

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

16125

Females

5875

F60-64

5875

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

19185

Females

7584

F60-64

7584

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15790

Females

5746

F60-64

5746

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

22222

Females

9239

F60-64

9239

Passing Analysis

Category:
Athletes Passed
3159
Passed By
1353
Net Change
+1806
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18161
5K → 10K127358+1215#18161#16946
10K → 15K68138+643#16946#16303
15K → 20K143208-65#16303#16368
20K → Half6518+47#16368#16321
Half → 25K18289+93#16321#16228
25K → 30K27790+187#16228#16041
30K → 20M14425+119#16041#15922
20M → 21M9870+28#15922#15894
21M → 35K8322+61#15894#15833
35K → 23M7987-8#15833#15841
23M → 24M6587-22#15841#15863
24M → 40K27182-155#15863#16018
40K → 25.2M3125+6#16018#16012
25.2M → Finish11354-343#16012#16355
TOTALS31591353+1806
📊

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