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BOSTON MARATHON 2023

Jie Chen

Bib: 21393•F

NJ

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 (F50-54)
#0 / 1207
Top 32%
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
8:38/mi
26:48
↑ 97↓ 3451.5%
10K· 6.21 mi
8:27/mi
53:04
↑ 79↓ 1380.4%
15K· 9.32 mi
8:19/mi
1:18:53
↑ 67↓ 78
20K· 12.43 mi
8:25/mi
1:45:02
↑ 106↓ 860.1%
Half· 13.11 mi
8:11/mi
1:50:37
↑ 19↓ 370.5%
25K· 15.53 mi
8:28/mi
2:11:08
↑ 66↓ 880.2%
30K· 18.64 mi
8:48/mi
2:38:27
↑ 181↓ 1480.2%
20M
9:05/mi
2:50:47
↑ 64↓ 500.2%
21M
9:05/mi
2:59:52
↑ 106↓ 241.6%
35K· 21.75 mi
8:32/mi
3:06:15
↑ 17↓ 861.7%
23M
8:48/mi
3:17:16
↑ 23↓ 630.6%
24M
8:30/mi
3:25:46
↓ 821.3%
40K· 24.85 mi
8:50/mi
3:33:19
↓ 200.3%
25.2M
10:12/mi
3:36:50
↑ 13↓ 160.2%
Finish· 26.22 mi
8:56/mi
3:45:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:37
Pace8:26 /mi
2nd Half
Distance13.11 mi
Time1:55:19
Pace8:48 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:1626:488:3826:48
8:38
-
10K
6.21 mi11:50:3253:048:3226:16
8:27
-0:11
15K
9.32 mi12:16:211:18:538:2825:49
8:19
-0:08
20K
12.43 mi12:42:301:45:028:2726:09
8:25
+0:06
Half
13.11 mi12:48:051:50:378:265:35
8:11
-0:14
25K
15.53 mi13:08:362:11:088:2620:31
8:28
+0:17
30K
18.64 mi13:35:552:38:278:3027:19
8:48
+0:20
20M
20.00 mi13:48:152:50:478:3212:20
9:05
+0:17
21M
21.00 mi13:57:202:59:528:349:05
9:05
0:00
35K
21.75 mi14:03:433:06:158:346:23
8:32
-0:33
23M
23.00 mi14:14:443:17:168:3511:01
8:48
+0:16
24M
24.00 mi14:23:143:25:468:348:30
8:30
-0:18
40K
24.85 mi14:30:473:33:198:357:33
8:50
+0:20
25.2M
25.20 mi14:34:183:36:508:363:31
10:12
+1:22
Finish
26.22 mi14:43:243:45:568:379:06
8:56
-1:16

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

8:11 /mi

Average Pace

8:37 /mi

Slowest Pace

10:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

31:24

14% of race

Time at Steady Pace

2:40:30

71% of race

Time at Slower Pace

34:02

15% 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 mi11:24:1626:488:3826:48
8:38
#18394
10K
6.21 mi11:50:3253:048:3226:16
8:27
#18152
15K
9.32 mi12:16:211:18:538:2825:49
8:19
#17619
20K
12.43 mi12:42:301:45:028:2726:09
8:25
#17262
Half
13.11 mi12:48:051:50:378:265:35
8:11
#17184
25K
15.53 mi13:08:362:11:088:2620:31
8:28
#16986
30K
18.64 mi13:35:552:38:278:3027:19
8:48
#16778
20M
20.00 mi13:48:152:50:478:3212:20
9:05
#16774
21M
21.00 mi13:57:202:59:528:349:05
9:05
#16582
35K
21.75 mi14:03:433:06:158:346:23
8:32
#16542
23M
23.00 mi14:14:443:17:168:3511:01
8:48
#16439
24M
24.00 mi14:23:143:25:468:348:30
8:30
#16339
40K
24.85 mi14:30:473:33:198:357:33
8:50
#16267
25.2M
25.20 mi14:34:183:36:508:363:31
10:12
#16311
Finish
26.22 mi14:43:243:45:568:379:06
8:56
#16353
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi183946806680616605(Top 62%)5671(Top 50%)5671(Top 470%)
10K6.21 mi3.10 mi18152+2426618+1886618+18817962(Top 67%)6451(Top 56%)6451(Top 534%)
15K9.32 mi3.11 mi17619+5336285+3336285+33316605(Top 62%)5671(Top 50%)5671(Top 470%)
20K12.43 mi3.11 mi17262+3576088+1976088+19716357(Top 61%)5562(Top 49%)5562(Top 461%)
Half13.11 mi0.68 mi17184+786035+536035+5315769(Top 59%)5175(Top 45%)5175(Top 429%)
25K15.53 mi2.42 mi16986+1985934+1015934+10115985(Top 60%)5436(Top 48%)5436(Top 450%)
30K18.64 mi3.11 mi16778+2085838+965838+9616017(Top 60%)5510(Top 48%)5510(Top 457%)
20M20.00 mi1.36 mi16774+45852-145852-1416968(Top 64%)6148(Top 54%)6148(Top 509%)
21M21.00 mi1.00 mi16582+1925758+945758+9413842(Top 52%)4419(Top 39%)4419(Top 366%)
35K21.75 mi0.75 mi16542+405740+185740+1815519(Top 58%)5425(Top 47%)5425(Top 449%)
23M23.00 mi1.25 mi16439+1035696+445696+4415011(Top 56%)5182(Top 45%)5182(Top 429%)
24M24.00 mi1.00 mi16339+1005650+465650+4614509(Top 55%)4966(Top 43%)4966(Top 411%)
40K24.85 mi0.85 mi16267+725634+165634+1615277(Top 57%)5459(Top 48%)5459(Top 452%)
25.2M25.20 mi0.35 mi16311-445666-325666-3218133(Top 68%)7013(Top 61%)7013(Top 581%)
Finish26.22 mi1.02 mi16353-425690-245690-2417634(Top 66%)6719(Top 59%)6719(Top 557%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

16605

Females

5671

F50-54

5671

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

17962

Females

6451

F50-54

6451

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

16605

Females

5671

F50-54

5671

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

16357

Females

5562

F50-54

5562

20K→Half

12.4 - 13.1 mi

Top 59%
×2story building
+19ft-37ft

Overall

15769

Females

5175

F50-54

5175

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

15985

Females

5436

F50-54

5436

25K→30K

15.5 - 18.6 mi

Top 60%
×9story building
+181ft-148ft

Overall

16017

Females

5510

F50-54

5510

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

16968

Females

6148

F50-54

6148

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

13842

Females

4419

F50-54

4419

21M→35K

21.0 - 21.8 mi

Top 58%
×7story building
+17ft-86ft

Overall

15519

Females

5425

F50-54

5425

35K→23M

21.8 - 23.0 mi

Top 56%
×5story building
+23ft-63ft

Overall

15011

Females

5182

F50-54

5182

23M→24M

23.0 - 24.0 mi

Top 55%
×6story building
+12ft-82ft

Overall

14509

Females

4966

F50-54

4966

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15277

Females

5459

F50-54

5459

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

18133

Females

7013

F50-54

7013

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

17634

Females

6719

F50-54

6719

Passing Analysis

Category:
Athletes Passed
2789
Passed By
748
Net Change
+2041
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18394
5K → 10K460218+242#18394#18152
10K → 15K57037+533#18152#17619
15K → 20K39538+357#17619#17262
20K → Half835+78#17262#17184
Half → 25K22628+198#17184#16986
25K → 30K27365+208#16986#16778
30K → 20M8783+4#16778#16774
20M → 21M20513+192#16774#16582
21M → 35K6626+40#16582#16542
35K → 23M13532+103#16542#16439
23M → 24M12626+100#16439#16339
24M → 40K10230+72#16339#16267
40K → 25.2M1761-44#16267#16311
25.2M → Finish4486-42#16311#16353
TOTALS2789748+2041
📊

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