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BOSTON MARATHON 2023

Yon Chang

Bib: 22984•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 50%
Division (F50-54)
#0 / 1207
Top 46%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:39
Rank: #19990
Start → 5K
27:39 | 8:54/mi
10K· 6.21 mi
54:47
Rank: #19770 (+220)
5K → 10K
27:08 | 8:44/mi
15K· 9.32 mi
1:21:42
Rank: #19425 (+345)
10K → 15K
26:55 | 8:40/mi
20K· 12.43 mi
1:48:57
Rank: #19157 (+268)
15K → 20K
27:15 | 8:46/mi
Half· 13.11 mi
1:54:47
Rank: #19099 (+58)
20K → Half
5:50 | 8:33/mi
25K· 15.53 mi
2:15:59
Rank: #18867 (+232)
Half → 25K
21:12 | 8:45/mi
30K· 18.64 mi
2:44:39
Rank: #18754 (+113)
25K → 30K
28:40 | 9:14/mi
20M
2:57:15
Rank: #18687 (+67)
30K → 20M
12:36 | 9:16/mi
21M
3:07:15
Rank: #18625 (+62)
20M → 21M
10:00 | 10:00/mi
35K· 21.75 mi
3:13:52
Rank: #18565 (+60)
21M → 35K
6:37 | 8:51/mi
23M
3:25:11
Rank: #18418 (+147)
35K → 23M
11:19 | 9:02/mi
24M
3:33:40
Rank: #18251 (+167)
23M → 24M
8:29 | 8:29/mi
40K· 24.85 mi
3:40:57
Rank: #18099 (+152)
24M → 40K
7:17 | 8:31/mi
25.2M
3:43:54
Rank: #17989 (+110)
40K → 25.2M
2:57 | 8:33/mi
Finish· 26.22 mi
3:52:03
Rank: #17781 (+208)
25.2M → Finish
8:09 | 8:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:47
Pace8:45 /mi
2nd Half
Distance13.11 mi
Time1:57:16
Pace8:57 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:1827:398:5427:39
8:54
-
10K
6.21 mi11:51:2654:478:4927:08
8:44
-0:10
15K
9.32 mi12:18:211:21:428:4626:55
8:40
-0:04
20K
12.43 mi12:45:361:48:578:4627:15
8:46
+0:06
Half
13.11 mi12:51:261:54:478:455:50
8:33
-0:13
25K
15.53 mi13:12:382:15:598:4521:12
8:45
+0:12
30K
18.64 mi13:41:182:44:398:5028:40
9:14
+0:29
20M
20.00 mi13:53:542:57:158:5212:36
9:16
+0:02
21M
21.00 mi14:03:543:07:158:5510:00
10:00
+0:44
35K
21.75 mi14:10:313:13:528:556:37
8:51
-1:09
23M
23.00 mi14:21:503:25:118:5511:19
9:02
+0:11
24M
24.00 mi14:30:193:33:408:548:29
8:29
-0:33
40K
24.85 mi14:37:363:40:578:537:17
8:31
+0:02
25.2M
25.20 mi14:40:333:43:548:532:57
8:33
+0:02
Finish
26.22 mi14:48:423:52:038:518:09
8:00
-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

8:00 /mi

Average Pace

8:51 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

23:55

10% of race

Time at Steady Pace

2:25:33

63% of race

Time at Slower Pace

1:02:35

27% of race

Average Pace: 8:51 /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 mi11:24:1827:398:5427:39
8:54
#19990
10K
6.21 mi11:51:2654:478:4927:08
8:44
#19770
15K
9.32 mi12:18:211:21:428:4626:55
8:40
#19425
20K
12.43 mi12:45:361:48:578:4627:15
8:46
#19157
Half
13.11 mi12:51:261:54:478:455:50
8:33
#19099
25K
15.53 mi13:12:382:15:598:4521:12
8:45
#18867
30K
18.64 mi13:41:182:44:398:5028:40
9:14
#18754
20M
20.00 mi13:53:542:57:158:5212:36
9:16
#18687
21M
21.00 mi14:03:543:07:158:5510:00
10:00
#18625
35K
21.75 mi14:10:313:13:528:556:37
8:51
#18565
23M
23.00 mi14:21:503:25:118:5511:19
9:02
#18418
24M
24.00 mi14:30:193:33:408:548:29
8:29
#18251
40K
24.85 mi14:37:363:40:578:537:17
8:31
#18099
25.2M
25.20 mi14:40:333:43:548:532:57
8:33
#17989
Finish
26.22 mi14:48:423:52:038:518:09
8:00
#17781
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi199907810781018798(Top 71%)6976(Top 61%)6976(Top 578%)
10K6.21 mi3.10 mi19770+2207634+1767634+17619599(Top 74%)7446(Top 65%)7446(Top 617%)
15K9.32 mi3.11 mi19425+3457406+2287406+22818798(Top 71%)6976(Top 61%)6976(Top 578%)
20K12.43 mi3.11 mi19157+2687209+1977209+19718520(Top 70%)6804(Top 60%)6804(Top 564%)
Half13.11 mi0.68 mi19099+587181+287181+2818047(Top 68%)6511(Top 57%)6511(Top 539%)
25K15.53 mi2.42 mi18867+2327045+1367045+13617640(Top 66%)6363(Top 56%)6363(Top 527%)
30K18.64 mi3.11 mi18754+1137003+427003+4218285(Top 69%)6807(Top 60%)6807(Top 564%)
20M20.00 mi1.36 mi18687+676974+296974+2917898(Top 67%)6689(Top 59%)6689(Top 554%)
21M21.00 mi1.00 mi18625+626943+316943+3118034(Top 68%)6782(Top 59%)6782(Top 562%)
35K21.75 mi0.75 mi18565+606914+296914+2917213(Top 65%)6398(Top 56%)6398(Top 530%)
23M23.00 mi1.25 mi18418+1476863+516863+5116273(Top 61%)5900(Top 52%)5900(Top 489%)
24M24.00 mi1.00 mi18251+1676771+926771+9214427(Top 54%)4921(Top 43%)4921(Top 408%)
40K24.85 mi0.85 mi18099+1526695+766695+7613526(Top 51%)4503(Top 39%)4503(Top 373%)
25.2M25.20 mi0.35 mi17989+1106638+576638+5710031(Top 38%)2747(Top 24%)2747(Top 228%)
Finish26.22 mi1.02 mi17781+2086522+1166522+11612178(Top 46%)3807(Top 33%)3807(Top 315%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21stories
+97ft-345ft

Overall

18798

Females

6976

F50-54

6976

5K→10K

3.1 - 6.2 mi

Top 74%
×5stories
+79ft-138ft

Overall

19599

Females

7446

F50-54

7446

10K→15K

6.2 - 9.3 mi

Top 71%
×3stories
+67ft-78ft

Overall

18798

Females

6976

F50-54

6976

15K→20K

9.3 - 12.4 mi

Top 70%
×5stories
+106ft-86ft

Overall

18520

Females

6804

F50-54

6804

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

18047

Females

6511

F50-54

6511

Half→25K

13.1 - 15.5 mi

Top 66%
×4stories
+66ft-88ft

Overall

17640

Females

6363

F50-54

6363

25K→30K

15.5 - 18.6 mi

Top 69%
×9stories
+181ft-148ft

Overall

18285

Females

6807

F50-54

6807

30K→20M

18.6 - 20.0 mi

Top 67%
×5stories
+64ft-50ft

Overall

17898

Females

6689

F50-54

6689

20M→21M

20.0 - 21.0 mi

Top 68%
×8stories
+106ft-24ft

Overall

18034

Females

6782

F50-54

6782

21M→35K

21.0 - 21.8 mi

Top 65%
×7stories
+17ft-86ft

Overall

17213

Females

6398

F50-54

6398

35K→23M

21.8 - 23.0 mi

Top 61%
×5stories
+23ft-63ft

Overall

16273

Females

5900

F50-54

5900

23M→24M

23.0 - 24.0 mi

Top 54%
×6stories
+12ft-82ft

Overall

14427

Females

4921

F50-54

4921

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

13526

Females

4503

F50-54

4503

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10031

Females

2747

F50-54

2747

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2stories
+22ft-21ft

Overall

12178

Females

3807

F50-54

3807

Passing Analysis

Category:
Athletes Passed
2810
Passed By
601
Net Change
+2209
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19990
5K → 10K435215+220#19990#19770
10K → 15K40863+345#19770#19425
15K → 20K32254+268#19425#19157
20K → Half657+58#19157#19099
Half → 25K24614+232#19099#18867
25K → 30K215102+113#18867#18754
30K → 20M11548+67#18754#18687
20M → 21M11755+62#18687#18625
21M → 35K7616+60#18625#18565
35K → 23M17023+147#18565#18418
23M → 24M1681+167#18418#18251
24M → 40K1520+152#18251#18099
40K → 25.2M1100+110#18099#17989
25.2M → Finish2113+208#17989#17781
TOTALS2810601+2209
📊

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