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BOSTON MARATHON 2023

Bihua Zhang

Bib: 18079•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 35%
Gender (Female)
#0 / 11423
Top 15%
Masters (Masters Women)
#0 / 6539
Top 6%
Division (F40-44)
#0 / 1878
Top 13%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:14
Rank: #12339
Start → 5K
24:14 | 7:48/mi
10K· 6.21 mi
47:17
Rank: #10999 (+1340)
5K → 10K
23:03 | 7:25/mi
15K· 9.32 mi
1:10:17
Rank: #10426 (+573)
10K → 15K
23:00 | 7:24/mi
20K· 12.43 mi
1:33:54
Rank: #10319 (+107)
15K → 20K
23:37 | 7:36/mi
Half· 13.11 mi
1:38:57
Rank: #10270 (+49)
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:57:19
Rank: #10066 (+204)
Half → 25K
18:22 | 7:35/mi
30K· 18.64 mi
2:21:23
Rank: #9855 (+211)
25K → 30K
24:04 | 7:45/mi
20M
2:31:53
Rank: #9696 (+159)
30K → 20M
10:30 | 7:44/mi
21M
2:40:14
Rank: #9676 (+20)
20M → 21M
8:21 | 8:21/mi
35K· 21.75 mi
2:45:48
Rank: #9597 (+79)
21M → 35K
5:34 | 7:26/mi
23M
2:55:44
Rank: #9535 (+62)
35K → 23M
9:56 | 7:56/mi
24M
3:03:15
Rank: #9449 (+86)
23M → 24M
7:31 | 7:31/mi
40K· 24.85 mi
3:09:49
Rank: #9355 (+94)
24M → 40K
6:34 | 7:41/mi
25.2M
3:12:39
Rank: #9315 (+40)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:20:14
Rank: #9259 (+56)
25.2M → Finish
7:35 | 7:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:57
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:41:17
Pace7:44 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:1324:147:4824:14
7:48
-
10K
6.21 mi11:38:1647:177:3723:03
7:25
-0:23
15K
9.32 mi12:01:161:10:177:3223:00
7:24
-0:01
20K
12.43 mi12:24:531:33:547:3323:37
7:36
+0:12
Half
13.11 mi12:29:561:38:577:335:03
7:24
-0:12
25K
15.53 mi12:48:181:57:197:3318:22
7:35
+0:11
30K
18.64 mi13:12:222:21:237:3524:04
7:45
+0:10
20M
20.00 mi13:22:522:31:537:3610:30
7:44
-0:01
21M
21.00 mi13:31:132:40:147:388:21
8:21
+0:37
35K
21.75 mi13:36:472:45:487:375:34
7:26
-0:55
23M
23.00 mi13:46:432:55:447:389:56
7:56
+0:30
24M
24.00 mi13:54:143:03:157:387:31
7:31
-0:25
40K
24.85 mi14:00:483:09:497:386:34
7:41
+0:10
25.2M
25.20 mi14:03:383:12:397:392:50
8:13
+0:32
Finish
26.22 mi14:11:133:20:147:397:35
7:26
-0:47

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

7:24 /mi

Average Pace

7:39 /mi

Slowest Pace

8:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:09:03

94% of race

Time at Steady Pace

11:11

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:38 /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 mi11:15:1324:147:4824:14
7:48
#12339
10K
6.21 mi11:38:1647:177:3723:03
7:25
#10999
15K
9.32 mi12:01:161:10:177:3223:00
7:24
#10426
20K
12.43 mi12:24:531:33:547:3323:37
7:36
#10319
Half
13.11 mi12:29:561:38:577:335:03
7:24
#10270
25K
15.53 mi12:48:181:57:197:3318:22
7:35
#10066
30K
18.64 mi13:12:222:21:237:3524:04
7:45
#9855
20M
20.00 mi13:22:522:31:537:3610:30
7:44
#9696
21M
21.00 mi13:31:132:40:147:388:21
8:21
#9676
35K
21.75 mi13:36:472:45:487:375:34
7:26
#9597
23M
23.00 mi13:46:432:55:447:389:56
7:56
#9535
24M
24.00 mi13:54:143:03:157:387:31
7:31
#9449
40K
24.85 mi14:00:483:09:497:386:34
7:41
#9355
25.2M
25.20 mi14:03:383:12:397:392:50
8:13
#9315
Finish
26.22 mi14:11:133:20:147:397:35
7:26
#9259
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi12339305830589372(Top 35%)1573(Top 14%)1573(Top 84%)
10K6.21 mi3.10 mi10999+13402323+7352323+7359806(Top 37%)1732(Top 15%)1732(Top 92%)
15K9.32 mi3.11 mi10426+5732024+2992024+2999372(Top 35%)1573(Top 14%)1573(Top 84%)
20K12.43 mi3.11 mi10319+1071985+391985+3910114(Top 38%)1970(Top 17%)1970(Top 105%)
Half13.11 mi0.68 mi10270+491957+281957+289491(Top 36%)1671(Top 15%)1671(Top 89%)
25K15.53 mi2.42 mi10066+2041891+661891+669364(Top 35%)1713(Top 15%)1713(Top 91%)
30K18.64 mi3.11 mi9855+2111827+641827+648982(Top 34%)1701(Top 15%)1701(Top 91%)
20M20.00 mi1.36 mi9696+1591792+351792+358393(Top 32%)1557(Top 14%)1557(Top 83%)
21M21.00 mi1.00 mi9676+201794-21794-29546(Top 36%)2160(Top 19%)2160(Top 115%)
35K21.75 mi0.75 mi9597+791782+121782+128149(Top 31%)1567(Top 14%)1567(Top 83%)
23M23.00 mi1.25 mi9535+621781+11781+19315(Top 35%)2175(Top 19%)2175(Top 116%)
24M24.00 mi1.00 mi9449+861775+61775+67848(Top 29%)1623(Top 14%)1623(Top 86%)
40K24.85 mi0.85 mi9355+941769+61769+67873(Top 30%)1703(Top 15%)1703(Top 91%)
25.2M25.20 mi0.35 mi9315+401762+71762+77853(Top 29%)1765(Top 15%)1765(Top 94%)
Finish26.22 mi1.02 mi9259+561761+11761+18119(Top 30%)1883(Top 16%)1883(Top 100%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9372

Females

1573

F40-44

1573

5K→10K

3.1 - 6.2 mi

Top 37%
×5stories
+79ft-138ft

Overall

9806

Females

1732

F40-44

1732

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9372

Females

1573

F40-44

1573

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10114

Females

1970

F40-44

1970

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

9491

Females

1671

F40-44

1671

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9364

Females

1713

F40-44

1713

25K→30K

15.5 - 18.6 mi

Top 34%
×9stories
+181ft-148ft

Overall

8982

Females

1701

F40-44

1701

30K→20M

18.6 - 20.0 mi

Top 32%
×5stories
+64ft-50ft

Overall

8393

Females

1557

F40-44

1557

20M→21M

20.0 - 21.0 mi

Top 36%
×8stories
+106ft-24ft

Overall

9546

Females

2160

F40-44

2160

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8149

Females

1567

F40-44

1567

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9315

Females

2175

F40-44

2175

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7848

Females

1623

F40-44

1623

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

7873

Females

1703

F40-44

1703

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7853

Females

1765

F40-44

1765

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2stories
+22ft-21ft

Overall

8119

Females

1883

F40-44

1883

Passing Analysis

Category:
Athletes Passed
3564*
Passed By
484
Net Change
+3080
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12339
5K → 10K136727+1340#12339#10999
10K → 15K60431+573#10999#10426
15K → 20K201*94+107#10426#10319
20K → Half578+49#10319#10270
Half → 25K24238+204#10270#10066
25K → 30K275*64+211#10066#9855
30K → 20M17718+159#9855#9696
20M → 21M7858+20#9696#9676
21M → 35K856+79#9676#9597
35K → 23M11553+62#9597#9535
23M → 24M11529+86#9535#9449
24M → 40K115*21+94#9449#9355
40K → 25.2M5010+40#9355#9315
25.2M → Finish8327+56#9315#9259
TOTALS3564*484+3080

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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