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BOSTON MARATHON 2023

Ju-Wen Cheng

Bib: 22976•F

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:01
Rank: #20543
Start → 5K
28:01 | 9:01/mi
10K· 6.21 mi
55:51
Rank: #20605 (-62)
5K → 10K
27:50 | 8:58/mi
15K· 9.32 mi
1:24:02
Rank: #20638 (-33)
10K → 15K
28:11 | 9:04/mi
20K· 12.43 mi
1:53:47
Rank: #21020 (-382)
15K → 20K
29:45 | 9:35/mi
Half· 13.11 mi
2:00:18
Rank: #21105 (-85)
20K → Half
6:31 | 9:33/mi
25K· 15.53 mi
2:24:08
Rank: #21216 (-111)
Half → 25K
23:50 | 9:50/mi
30K· 18.64 mi
2:56:10
Rank: #21324 (-108)
25K → 30K
32:02 | 10:19/mi
20M
3:10:16
Rank: #21326 (-2)
30K → 20M
14:06 | 10:23/mi
21M
3:21:13
Rank: #21285 (+41)
20M → 21M
10:57 | 10:57/mi
35K· 21.75 mi
3:28:56
Rank: #21311 (-26)
21M → 35K
7:43 | 10:19/mi
23M
3:41:47
Rank: #21261 (+50)
35K → 23M
12:51 | 10:16/mi
24M
3:51:50
Rank: #21243 (+18)
23M → 24M
10:03 | 10:03/mi
40K· 24.85 mi
4:00:27
Rank: #21190 (+53)
24M → 40K
8:37 | 10:05/mi
25.2M
4:04:22
Rank: #21195 (-5)
40K → 25.2M
3:55 | 11:21/mi
Finish· 26.22 mi
4:14:40
Rank: #21228 (-33)
25.2M → Finish
10:18 | 10:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:18
Pace9:11 /mi
2nd Half
Distance13.11 mi
Time2:14:22
Pace10:15 /mi
📊Positive Split: 11.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:1528:019:0128:01
9:01
-
10K
6.21 mi11:51:0555:518:5927:50
8:58
-0:03
15K
9.32 mi12:19:161:24:029:0128:11
9:04
+0:06
20K
12.43 mi12:49:011:53:479:0929:45
9:35
+0:31
Half
13.11 mi12:55:322:00:189:116:31
9:33
-0:02
25K
15.53 mi13:19:222:24:089:1723:50
9:50
+0:17
30K
18.64 mi13:51:242:56:109:2732:02
10:19
+0:29
20M
20.00 mi14:05:303:10:169:3114:06
10:23
+0:04
21M
21.00 mi14:16:273:21:139:3510:57
10:57
+0:34
35K
21.75 mi14:24:103:28:569:367:43
10:19
-0:38
23M
23.00 mi14:37:013:41:479:3912:51
10:16
-0:03
24M
24.00 mi14:47:043:51:509:4010:03
10:03
-0:13
40K
24.85 mi14:55:414:00:279:408:37
10:05
+0:02
25.2M
25.20 mi14:59:364:04:229:423:55
11:21
+1:16
Finish
26.22 mi15:09:544:14:409:4310:18
10:06
-1:15

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

8:58 /mi

Average Pace

9:43 /mi

Slowest Pace

11:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:18

47% of race

Time at Steady Pace

1:59:30

47% of race

Time at Slower Pace

14:52

6% of race

Average Pace: 9:43 /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 mi11:23:1528:019:0128:01
9:01
#20543
10K
6.21 mi11:51:0555:518:5927:50
8:58
#20605
15K
9.32 mi12:19:161:24:029:0128:11
9:04
#20638
20K
12.43 mi12:49:011:53:479:0929:45
9:35
#21020
Half
13.11 mi12:55:322:00:189:116:31
9:33
#21105
25K
15.53 mi13:19:222:24:089:1723:50
9:50
#21216
30K
18.64 mi13:51:242:56:109:2732:02
10:19
#21324
20M
20.00 mi14:05:303:10:169:3114:06
10:23
#21326
21M
21.00 mi14:16:273:21:139:3510:57
10:57
#21285
35K
21.75 mi14:24:103:28:569:367:43
10:19
#21311
23M
23.00 mi14:37:013:41:479:3912:51
10:16
#21261
24M
24.00 mi14:47:043:51:509:4010:03
10:03
#21243
40K
24.85 mi14:55:414:00:279:408:37
10:05
#21190
25.2M
25.20 mi14:59:364:04:229:423:55
11:21
#21195
Finish
26.22 mi15:09:544:14:409:4310:18
10:06
#21228
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi205438141814120835(Top 78%)8144(Top 71%)8144(Top 675%)
10K6.21 mi3.10 mi20605-628091+508091+5020721(Top 78%)8105(Top 71%)8105(Top 671%)
15K9.32 mi3.11 mi20638-338089+28089+220835(Top 78%)8144(Top 71%)8144(Top 675%)
20K12.43 mi3.11 mi21020-3828289-2008289-20021789(Top 82%)8673(Top 76%)8673(Top 719%)
Half13.11 mi0.68 mi21105-858329-408329-4022269(Top 84%)8923(Top 78%)8923(Top 739%)
25K15.53 mi2.42 mi21216-1118388-598388-5921817(Top 82%)8729(Top 76%)8729(Top 723%)
30K18.64 mi3.11 mi21324-1088464-768464-7621803(Top 82%)8792(Top 77%)8792(Top 728%)
20M20.00 mi1.36 mi21326-28480-168480-1621466(Top 81%)8678(Top 76%)8678(Top 719%)
21M21.00 mi1.00 mi21285+418471+98471+920734(Top 78%)8316(Top 73%)8316(Top 689%)
35K21.75 mi0.75 mi21311-268487-168487-1622038(Top 83%)9069(Top 79%)9069(Top 751%)
23M23.00 mi1.25 mi21261+508479+88479+820757(Top 78%)8379(Top 73%)8379(Top 694%)
24M24.00 mi1.00 mi21243+188476+38476+320936(Top 79%)8506(Top 74%)8506(Top 705%)
40K24.85 mi0.85 mi21190+538461+158461+1520195(Top 76%)8164(Top 71%)8164(Top 676%)
25.2M25.20 mi0.35 mi21195-58460+18460+121276(Top 80%)8739(Top 77%)8739(Top 724%)
Finish26.22 mi1.02 mi21228-338489-298489-2922063(Top 83%)9147(Top 80%)9147(Top 758%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21stories
+97ft-345ft

Overall

20835

Females

8144

F50-54

8144

5K→10K

3.1 - 6.2 mi

Top 78%
×5stories
+79ft-138ft

Overall

20721

Females

8105

F50-54

8105

10K→15K

6.2 - 9.3 mi

Top 78%
×3stories
+67ft-78ft

Overall

20835

Females

8144

F50-54

8144

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

21789

Females

8673

F50-54

8673

20K→Half

12.4 - 13.1 mi

Top 84%
×2stories
+19ft-37ft

Overall

22269

Females

8923

F50-54

8923

Half→25K

13.1 - 15.5 mi

Top 82%
×4stories
+66ft-88ft

Overall

21817

Females

8729

F50-54

8729

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

21803

Females

8792

F50-54

8792

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

21466

Females

8678

F50-54

8678

20M→21M

20.0 - 21.0 mi

Top 78%
×8stories
+106ft-24ft

Overall

20734

Females

8316

F50-54

8316

21M→35K

21.0 - 21.8 mi

Top 83%
×7stories
+17ft-86ft

Overall

22038

Females

9069

F50-54

9069

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

20757

Females

8379

F50-54

8379

23M→24M

23.0 - 24.0 mi

Top 79%
×6stories
+12ft-82ft

Overall

20936

Females

8506

F50-54

8506

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20195

Females

8164

F50-54

8164

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21276

Females

8739

F50-54

8739

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2stories
+22ft-21ft

Overall

22063

Females

9147

F50-54

9147

Passing Analysis

Category:
Athletes Passed
1100
Passed By
1785
Net Change
-685
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20543
5K → 10K271333-62#20543#20605
10K → 15K164197-33#20605#20638
15K → 20K58440-382#20638#21020
20K → Half893-85#21020#21105
Half → 25K66177-111#21105#21216
25K → 30K91199-108#21216#21324
30K → 20M7375-2#21324#21326
20M → 21M8544+41#21326#21285
21M → 35K1945-26#21285#21311
35K → 23M9242+50#21311#21261
23M → 24M5234+18#21261#21243
24M → 40K7825+53#21243#21190
40K → 25.2M1621-5#21190#21195
25.2M → Finish2760-33#21195#21228
TOTALS11001785-685
📊

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