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BOSTON MARATHON 2023

Xin Shan

Bib: 16370•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 44%
Masters (Masters Women)
#0 / 6539
Top 32%
Division (F50-54)
#0 / 1207
Top 24%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:35
Rank: #15697
Start → 5K
8:14/mi
25:35 split
10K· 6.21 mi
50:55
Rank: #15786 (-89)
5K → 10K
8:09/mi
25:20 split
15K· 9.32 mi
1:16:40
Rank: #16008 (-222)
10K → 15K
8:17/mi
25:45 split
20K· 12.43 mi
1:42:54
Rank: #16126 (-118)
15K → 20K
8:27/mi
26:14 split
Half· 13.11 mi
1:48:32
Rank: #16123 (+3)
20K → Half
8:15/mi
5:38 split
25K· 15.53 mi
2:09:04
Rank: #16091 (+32)
Half → 25K
8:28/mi
20:32 split
30K· 18.64 mi
2:35:58
Rank: #15910 (+181)
25K → 30K
8:39/mi
26:54 split
20M
2:47:47
Rank: #15818 (+92)
30K → 20M
8:42/mi
11:49 split
21M
2:56:50
Rank: #15669 (+149)
20M → 21M
9:03/mi
9:03 split
35K· 21.75 mi
3:03:07
Rank: #15625 (+44)
21M → 35K
8:24/mi
6:17 split
23M
3:13:54
Rank: #15503 (+122)
35K → 23M
8:37/mi
10:47 split
24M
3:22:14
Rank: #15404 (+99)
23M → 24M
8:20/mi
8:20 split
40K· 24.85 mi
3:29:32
Rank: #15330 (+74)
24M → 40K
8:32/mi
7:18 split
25.2M
3:32:41
Rank: #15288 (+42)
40K → 25.2M
9:08/mi
3:09 split
Finish· 26.22 mi
3:41:07
Rank: #15212 (+76)
25.2M → Finish
8:17/mi
8:26 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:32
Pace8:17 /mi
2nd Half
Distance13.11 mi
Time1:52:35
Pace8:35 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0025:358:1425:35
8:14
-
10K
6.21 mi11:43:2050:558:1225:20
8:09
-0:05
15K
9.32 mi12:09:051:16:408:1425:45
8:17
+0:08
20K
12.43 mi12:35:191:42:548:1726:14
8:27
+0:10
Half
13.11 mi12:40:571:48:328:175:38
8:15
-0:12
25K
15.53 mi13:01:292:09:048:1920:32
8:28
+0:13
30K
18.64 mi13:28:232:35:588:2226:54
8:39
+0:11
20M
20.00 mi13:40:122:47:478:2311:49
8:42
+0:03
21M
21.00 mi13:49:152:56:508:259:03
9:03
+0:21
35K
21.75 mi13:55:323:03:078:256:17
8:24
-0:39
23M
23.00 mi14:06:193:13:548:2610:47
8:37
+0:13
24M
24.00 mi14:14:393:22:148:268:20
8:20
-0:17
40K
24.85 mi14:21:573:29:328:267:18
8:32
+0:12
25.2M
25.20 mi14:25:063:32:418:263:09
9:08
+0:36
Finish
26.22 mi14:33:323:41:078:268:26
8:17
-0:51

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

8:09 /mi

Average Pace

8:26 /mi

Slowest Pace

9:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:28:55

94% of race

Time at Steady Pace

12:12

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:26 /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 mi11:18:0025:358:1425:35
8:14
#15697
10K
6.21 mi11:43:2050:558:1225:20
8:09
#15786
15K
9.32 mi12:09:051:16:408:1425:45
8:17
#16008
20K
12.43 mi12:35:191:42:548:1726:14
8:27
#16126
Half
13.11 mi12:40:571:48:328:175:38
8:15
#16123
25K
15.53 mi13:01:292:09:048:1920:32
8:28
#16091
30K
18.64 mi13:28:232:35:588:2226:54
8:39
#15910
20M
20.00 mi13:40:122:47:478:2311:49
8:42
#15818
21M
21.00 mi13:49:152:56:508:259:03
9:03
#15669
35K
21.75 mi13:55:323:03:078:256:17
8:24
#15625
23M
23.00 mi14:06:193:13:548:2610:47
8:37
#15503
24M
24.00 mi14:14:393:22:148:268:20
8:20
#15404
40K
24.85 mi14:21:573:29:328:267:18
8:32
#15330
25.2M
25.20 mi14:25:063:32:418:263:09
9:08
#15288
Finish
26.22 mi14:33:323:41:078:268:26
8:17
#15212
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi156975094509416473(Top 62%)5577(Top 49%)5577(Top 462%)
10K6.21 mi3.10 mi15786-895149-555149-5515947(Top 60%)5244(Top 46%)5244(Top 434%)
15K9.32 mi3.11 mi16008-2225286-1375286-13716473(Top 62%)5577(Top 49%)5577(Top 462%)
20K12.43 mi3.11 mi16126-1185383-975383-9716507(Top 62%)5651(Top 49%)5651(Top 468%)
Half13.11 mi0.68 mi16123+35386-35386-316231(Top 61%)5432(Top 48%)5432(Top 450%)
25K15.53 mi2.42 mi16091+325391-55391-516014(Top 60%)5448(Top 48%)5448(Top 451%)
30K18.64 mi3.11 mi15910+1815320+715320+7115278(Top 57%)5103(Top 45%)5103(Top 423%)
20M20.00 mi1.36 mi15818+925287+335287+3314849(Top 56%)4910(Top 43%)4910(Top 407%)
21M21.00 mi1.00 mi15669+1495227+605227+6013720(Top 52%)4344(Top 38%)4344(Top 360%)
35K21.75 mi0.75 mi15625+445212+155212+1514756(Top 55%)4970(Top 44%)4970(Top 412%)
23M23.00 mi1.25 mi15503+1225165+475165+4713898(Top 52%)4561(Top 40%)4561(Top 378%)
24M24.00 mi1.00 mi15404+995112+535112+5313477(Top 51%)4387(Top 38%)4387(Top 363%)
40K24.85 mi0.85 mi15330+745080+325080+3213620(Top 51%)4541(Top 40%)4541(Top 376%)
25.2M25.20 mi0.35 mi15288+425063+175063+1713355(Top 50%)4426(Top 39%)4426(Top 367%)
Finish26.22 mi1.02 mi15212+765030+335030+3313977(Top 53%)4728(Top 41%)4728(Top 392%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

16473

Females

5577

F50-54

5577

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

15947

Females

5244

F50-54

5244

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

16473

Females

5577

F50-54

5577

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

16507

Females

5651

F50-54

5651

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

16231

Females

5432

F50-54

5432

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

16014

Females

5448

F50-54

5448

25K→30K

15.5 - 18.6 mi

Top 57%
×9story building
+181ft-148ft

Overall

15278

Females

5103

F50-54

5103

30K→20M

18.6 - 20.0 mi

Top 56%
×5story building
+64ft-50ft

Overall

14849

Females

4910

F50-54

4910

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

13720

Females

4344

F50-54

4344

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

14756

Females

4970

F50-54

4970

35K→23M

21.8 - 23.0 mi

Top 52%
×5story building
+23ft-63ft

Overall

13898

Females

4561

F50-54

4561

23M→24M

23.0 - 24.0 mi

Top 51%
×6story building
+12ft-82ft

Overall

13477

Females

4387

F50-54

4387

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

13620

Females

4541

F50-54

4541

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

13355

Females

4426

F50-54

4426

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2story building
+22ft-21ft

Overall

13977

Females

4728

F50-54

4728

Passing Analysis

Category:
Athletes Passed
1856
Passed By
1371
Net Change
+485
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15697
5K → 10K251340-89#15697#15786
10K → 15K116338-222#15786#16008
15K → 20K128246-118#16008#16126
20K → Half4239+3#16126#16123
Half → 25K161129+32#16123#16091
25K → 30K25776+181#16091#15910
30K → 20M13846+92#15910#15818
20M → 21M17526+149#15818#15669
21M → 35K6319+44#15669#15625
35K → 23M15331+122#15625#15503
23M → 24M11415+99#15503#15404
24M → 40K9622+74#15404#15330
40K → 25.2M5816+42#15330#15288
25.2M → Finish10428+76#15288#15212
TOTALS18561371+485
📊

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