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BOSTON MARATHON 2023

Jin Sha

Bib: 20123•F

PA

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
25:36
Rank: #15743
Start → 5K
25:36 | 8:14/mi
10K· 6.21 mi
52:00
Rank: #16987 (-1244)
5K → 10K
26:24 | 8:30/mi
15K· 9.32 mi
1:18:56
Rank: #17653 (-666)
10K → 15K
26:56 | 8:40/mi
20K· 12.43 mi
1:47:16
Rank: #18395 (-742)
15K → 20K
28:20 | 9:07/mi
Half· 13.11 mi
1:53:17
Rank: #18459 (-64)
20K → Half
6:01 | 8:49/mi
25K· 15.53 mi
2:15:44
Rank: #18791 (-332)
Half → 25K
22:27 | 9:16/mi
30K· 18.64 mi
2:45:08
Rank: #18880 (-89)
25K → 30K
29:24 | 9:28/mi
20M
2:57:54
Rank: #18850 (+30)
30K → 20M
12:46 | 9:24/mi
21M
3:08:22
Rank: #18914 (-64)
20M → 21M
10:28 | 10:28/mi
35K· 21.75 mi
3:15:00
Rank: #18856 (+58)
21M → 35K
6:38 | 8:52/mi
23M
3:26:53
Rank: #18803 (+53)
35K → 23M
11:53 | 9:29/mi
24M
3:35:54
Rank: #18729 (+74)
23M → 24M
9:01 | 9:01/mi
40K· 24.85 mi
3:44:28
Rank: #18805 (-76)
24M → 40K
8:34 | 10:01/mi
25.2M
3:47:55
Rank: #18788 (+17)
40K → 25.2M
3:27 | 10:00/mi
Finish· 26.22 mi
3:57:24
Rank: #18844 (-56)
25.2M → Finish
9:29 | 9:18/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:17
Pace8:38 /mi
2nd Half
Distance13.11 mi
Time2:04:07
Pace9:28 /mi
📊Positive Split: 9.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:1425:368:1425:36
8:14
-
10K
6.21 mi11:50:3852:008:2226:24
8:30
+0:16
15K
9.32 mi12:17:341:18:568:2826:56
8:40
+0:10
20K
12.43 mi12:45:541:47:168:3828:20
9:07
+0:27
Half
13.11 mi12:51:551:53:178:386:01
8:49
-0:18
25K
15.53 mi13:14:222:15:448:4422:27
9:16
+0:27
30K
18.64 mi13:43:462:45:088:5229:24
9:28
+0:12
20M
20.00 mi13:56:322:57:548:5412:46
9:24
-0:04
21M
21.00 mi14:07:003:08:228:5810:28
10:28
+1:04
35K
21.75 mi14:13:383:15:008:586:38
8:52
-1:36
23M
23.00 mi14:25:313:26:539:0011:53
9:29
+0:37
24M
24.00 mi14:34:323:35:549:009:01
9:01
-0:28
40K
24.85 mi14:43:063:44:289:028:34
10:01
+1:00
25.2M
25.20 mi14:46:333:47:559:033:27
10:00
-0:01
Finish
26.22 mi14:56:023:57:249:049:29
9:18
-0:42

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

8:14 /mi

Average Pace

9:04 /mi

Slowest Pace

10:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:31:35

39% of race

Time at Steady Pace

2:03:20

52% of race

Time at Slower Pace

22:29

9% of race

Average Pace: 9:03 /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 mi11:24:1425:368:1425:36
8:14
#15743
10K
6.21 mi11:50:3852:008:2226:24
8:30
#16987
15K
9.32 mi12:17:341:18:568:2826:56
8:40
#17653
20K
12.43 mi12:45:541:47:168:3828:20
9:07
#18395
Half
13.11 mi12:51:551:53:178:386:01
8:49
#18459
25K
15.53 mi13:14:222:15:448:4422:27
9:16
#18791
30K
18.64 mi13:43:462:45:088:5229:24
9:28
#18880
20M
20.00 mi13:56:322:57:548:5412:46
9:24
#18850
21M
21.00 mi14:07:003:08:228:5810:28
10:28
#18914
35K
21.75 mi14:13:383:15:008:586:38
8:52
#18856
23M
23.00 mi14:25:313:26:539:0011:53
9:29
#18803
24M
24.00 mi14:34:323:35:549:009:01
9:01
#18729
40K
24.85 mi14:43:063:44:289:028:34
10:01
#18805
25.2M
25.20 mi14:46:333:47:559:033:27
10:00
#18788
Finish
26.22 mi14:56:023:57:249:049:29
9:18
#18844
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi157435123512318842(Top 71%)7005(Top 61%)7005(Top 386%)
10K6.21 mi3.10 mi16987-12445907-7845907-78418245(Top 69%)6622(Top 58%)6622(Top 364%)
15K9.32 mi3.11 mi17653-6666309-4026309-40218842(Top 71%)7005(Top 61%)7005(Top 386%)
20K12.43 mi3.11 mi18395-7426749-4406749-44020226(Top 76%)7795(Top 68%)7795(Top 429%)
Half13.11 mi0.68 mi18459-646781-326781-3219612(Top 74%)7440(Top 65%)7440(Top 409%)
25K15.53 mi2.42 mi18791-3327008-2277008-22720056(Top 75%)7724(Top 68%)7724(Top 425%)
30K18.64 mi3.11 mi18880-897067-597067-5919290(Top 72%)7352(Top 64%)7352(Top 405%)
20M20.00 mi1.36 mi18850+307070-37070-318456(Top 69%)7004(Top 61%)7004(Top 385%)
21M21.00 mi1.00 mi18914-647117-477117-4719496(Top 73%)7638(Top 67%)7638(Top 420%)
35K21.75 mi0.75 mi18856+587091+267091+2617325(Top 65%)6465(Top 57%)6465(Top 356%)
23M23.00 mi1.25 mi18803+537074+177074+1718321(Top 69%)7027(Top 62%)7027(Top 387%)
24M24.00 mi1.00 mi18729+747044+307044+3017340(Top 65%)6546(Top 57%)6546(Top 360%)
40K24.85 mi0.85 mi18805-767102-587102-5820025(Top 75%)8067(Top 71%)8067(Top 444%)
25.2M25.20 mi0.35 mi18788+177097+57097+517459(Top 66%)6692(Top 59%)6692(Top 368%)
Finish26.22 mi1.02 mi18844-567123-267123-2619409(Top 73%)7678(Top 67%)7678(Top 423%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21stories
+97ft-345ft

Overall

18842

Females

7005

F45-49

7005

5K→10K

3.1 - 6.2 mi

Top 69%
×5stories
+79ft-138ft

Overall

18245

Females

6622

F45-49

6622

10K→15K

6.2 - 9.3 mi

Top 71%
×3stories
+67ft-78ft

Overall

18842

Females

7005

F45-49

7005

15K→20K

9.3 - 12.4 mi

Top 76%
×5stories
+106ft-86ft

Overall

20226

Females

7795

F45-49

7795

20K→Half

12.4 - 13.1 mi

Top 74%
×2stories
+19ft-37ft

Overall

19612

Females

7440

F45-49

7440

Half→25K

13.1 - 15.5 mi

Top 75%
×4stories
+66ft-88ft

Overall

20056

Females

7724

F45-49

7724

25K→30K

15.5 - 18.6 mi

Top 72%
×9stories
+181ft-148ft

Overall

19290

Females

7352

F45-49

7352

30K→20M

18.6 - 20.0 mi

Top 69%
×5stories
+64ft-50ft

Overall

18456

Females

7004

F45-49

7004

20M→21M

20.0 - 21.0 mi

Top 73%
×8stories
+106ft-24ft

Overall

19496

Females

7638

F45-49

7638

21M→35K

21.0 - 21.8 mi

Top 65%
×7stories
+17ft-86ft

Overall

17325

Females

6465

F45-49

6465

35K→23M

21.8 - 23.0 mi

Top 69%
×5stories
+23ft-63ft

Overall

18321

Females

7027

F45-49

7027

23M→24M

23.0 - 24.0 mi

Top 65%
×6stories
+12ft-82ft

Overall

17340

Females

6546

F45-49

6546

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

20025

Females

8067

F45-49

8067

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

17459

Females

6692

F45-49

6692

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

19409

Females

7678

F45-49

7678

Passing Analysis

Category:
Athletes Passed
855
Passed By
3956
Net Change
-3101
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15743
5K → 10K341278-1244#15743#16987
10K → 15K51717-666#16987#17653
15K → 20K43785-742#17653#18395
20K → Half1276-64#18395#18459
Half → 25K51383-332#18459#18791
25K → 30K146235-89#18791#18880
30K → 20M9969+30#18880#18850
20M → 21M60124-64#18850#18914
21M → 35K7517+58#18914#18856
35K → 23M10047+53#18856#18803
23M → 24M9521+74#18803#18729
24M → 40K29105-76#18729#18805
40K → 25.2M3114+17#18805#18788
25.2M → Finish2985-56#18788#18844
TOTALS8553956-3101
📊

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