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BOSTON MARATHON 2023

Shuang Jin

Bib: 20432•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 44%
Division (F45-49)
#0 / 1817
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
8:14/mi
25:34
↑ 97↓ 3451.5%
10K· 6.21 mi
7:55/mi
50:09
↑ 79↓ 1380.4%
15K· 9.32 mi
8:13/mi
1:15:42
↑ 67↓ 78
20K· 12.43 mi
8:36/mi
1:42:26
↑ 106↓ 860.1%
Half· 13.11 mi
8:26/mi
1:48:11
↑ 19↓ 370.5%
25K· 15.53 mi
8:43/mi
2:09:19
↑ 66↓ 880.2%
30K· 18.64 mi
9:01/mi
2:37:20
↑ 181↓ 1480.2%
20M
9:17/mi
2:49:57
↑ 64↓ 500.2%
21M
9:54/mi
2:59:51
↑ 106↓ 241.6%
35K· 21.75 mi
9:09/mi
3:06:42
↑ 17↓ 861.7%
23M
9:19/mi
3:18:22
↑ 23↓ 630.6%
24M
9:13/mi
3:27:35
↓ 821.3%
40K· 24.85 mi
9:17/mi
3:35:31
↓ 200.3%
25.2M
10:03/mi
3:38:59
↑ 13↓ 160.2%
Finish· 26.22 mi
9:03/mi
3:48:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:11
Pace8:15 /mi
2nd Half
Distance13.11 mi
Time2:00:01
Pace9:09 /mi
📊Positive Split: 10.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:4525:348:1425:34
8:14
-
10K
6.21 mi11:42:2050:098:0424:35
7:55
-0:19
15K
9.32 mi12:07:531:15:428:0725:33
8:13
+0:18
20K
12.43 mi12:34:371:42:268:1526:44
8:36
+0:23
Half
13.11 mi12:40:221:48:118:155:45
8:26
-0:10
25K
15.53 mi13:01:302:09:198:1921:08
8:43
+0:17
30K
18.64 mi13:29:312:37:208:2628:01
9:01
+0:18
20M
20.00 mi13:42:082:49:578:3012:37
9:17
+0:16
21M
21.00 mi13:52:022:59:518:349:54
9:54
+0:37
35K
21.75 mi13:58:533:06:428:356:51
9:09
-0:45
23M
23.00 mi14:10:333:18:228:3711:40
9:19
+0:10
24M
24.00 mi14:19:463:27:358:399:13
9:13
-0:06
40K
24.85 mi14:27:423:35:318:407:56
9:17
+0:04
25.2M
25.20 mi14:31:103:38:598:413:28
10:03
+0:46
Finish
26.22 mi14:40:233:48:128:439:13
9:03
-1:00

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

7:55 /mi

Average Pace

8:43 /mi

Slowest Pace

10:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:19

57% of race

Time at Steady Pace

1:25:31

37% of race

Time at Slower Pace

13:22

6% of race

Average Pace: 8:42 /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 mi11:17:4525:348:1425:34
8:14
#15670
10K
6.21 mi11:42:2050:098:0424:35
7:55
#14911
15K
9.32 mi12:07:531:15:428:0725:33
8:13
#15277
20K
12.43 mi12:34:371:42:268:1526:44
8:36
#15874
Half
13.11 mi12:40:221:48:118:155:45
8:26
#15934
25K
15.53 mi13:01:302:09:198:1921:08
8:43
#16216
30K
18.64 mi13:29:312:37:208:2628:01
9:01
#16413
20M
20.00 mi13:42:082:49:578:3012:37
9:17
#16523
21M
21.00 mi13:52:022:59:518:349:54
9:54
#16579
35K
21.75 mi13:58:533:06:428:356:51
9:09
#16674
23M
23.00 mi14:10:333:18:228:3711:40
9:19
#16732
24M
24.00 mi14:19:463:27:358:399:13
9:13
#16821
40K
24.85 mi14:27:423:35:318:407:56
9:17
#16826
25.2M
25.20 mi14:31:103:38:598:413:28
10:03
#16850
Finish
26.22 mi14:40:233:48:128:439:13
9:03
#16910
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi156705080508016040(Top 60%)5321(Top 47%)5321(Top 293%)
10K6.21 mi3.10 mi14911+7594602+4784602+47814102(Top 53%)4116(Top 36%)4116(Top 227%)
15K9.32 mi3.11 mi15277-3664839-2374839-23716040(Top 60%)5321(Top 47%)5321(Top 293%)
20K12.43 mi3.11 mi15874-5975227-3885227-38817528(Top 66%)6245(Top 55%)6245(Top 344%)
Half13.11 mi0.68 mi15934-605267-405267-4017347(Top 65%)6093(Top 53%)6093(Top 335%)
25K15.53 mi2.42 mi16216-2825466-1995466-19917470(Top 66%)6263(Top 55%)6263(Top 345%)
30K18.64 mi3.11 mi16413-1975633-1675633-16717273(Top 65%)6228(Top 55%)6228(Top 343%)
20M20.00 mi1.36 mi16523-1105713-805713-8017958(Top 67%)6718(Top 59%)6718(Top 370%)
21M21.00 mi1.00 mi16579-565756-435756-4317662(Top 66%)6561(Top 57%)6561(Top 361%)
35K21.75 mi0.75 mi16674-955811-555811-5518573(Top 70%)7142(Top 63%)7142(Top 393%)
23M23.00 mi1.25 mi16732-585864-535864-5317611(Top 66%)6635(Top 58%)6635(Top 365%)
24M24.00 mi1.00 mi16821-895937-735937-7318127(Top 68%)6963(Top 61%)6963(Top 383%)
40K24.85 mi0.85 mi16826-55961-245961-2417438(Top 66%)6647(Top 58%)6647(Top 366%)
25.2M25.20 mi0.35 mi16850-245978-175978-1717626(Top 66%)6753(Top 59%)6753(Top 372%)
Finish26.22 mi1.02 mi16910-606029-516029-5118195(Top 68%)7002(Top 61%)7002(Top 385%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

16040

Females

5321

F45-49

5321

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

14102

Females

4116

F45-49

4116

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

16040

Females

5321

F45-49

5321

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

17528

Females

6245

F45-49

6245

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

17347

Females

6093

F45-49

6093

Half→25K

13.1 - 15.5 mi

Top 66%
×4story building
+66ft-88ft

Overall

17470

Females

6263

F45-49

6263

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

17273

Females

6228

F45-49

6228

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

17958

Females

6718

F45-49

6718

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

17662

Females

6561

F45-49

6561

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

18573

Females

7142

F45-49

7142

35K→23M

21.8 - 23.0 mi

Top 66%
×5story building
+23ft-63ft

Overall

17611

Females

6635

F45-49

6635

23M→24M

23.0 - 24.0 mi

Top 68%
×6story building
+12ft-82ft

Overall

18127

Females

6963

F45-49

6963

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17438

Females

6647

F45-49

6647

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

17626

Females

6753

F45-49

6753

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

18195

Females

7002

F45-49

7002

Passing Analysis

Category:
Athletes Passed
1537
Passed By
2777
Net Change
-1240
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15670
5K → 10K83071+759#15670#14911
10K → 15K82448-366#14911#15277
15K → 20K50647-597#15277#15874
20K → Half1575-60#15874#15934
Half → 25K76358-282#15934#16216
25K → 30K120317-197#16216#16413
30K → 20M51161-110#16413#16523
20M → 21M68124-56#16523#16579
21M → 35K22117-95#16579#16674
35K → 23M67125-58#16674#16732
23M → 24M35124-89#16732#16821
24M → 40K5358-5#16821#16826
40K → 25.2M2347-24#16826#16850
25.2M → Finish45105-60#16850#16910
TOTALS15372777-1240
📊

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