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BOSTON MARATHON 2023

Sara Chang

Bib: 12429•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 17%
Gender (Female)
#0 / 11423
Top 3%
Division (F18-39)
#0 / 4884
Top 6%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:48
Rank: #6353
Start → 5K
21:48 | 7:01/mi
10K· 6.21 mi
42:54
Rank: #5859 (+494)
5K → 10K
21:06 | 6:47/mi
15K· 9.32 mi
1:04:02
Rank: #5633 (+226)
10K → 15K
21:08 | 6:48/mi
20K· 12.43 mi
1:25:39
Rank: #5663 (-30)
15K → 20K
21:37 | 6:57/mi
Half· 13.11 mi
1:30:23
Rank: #5686 (-23)
20K → Half
4:44 | 6:56/mi
25K· 15.53 mi
1:47:12
Rank: #5587 (+99)
Half → 25K
16:49 | 6:56/mi
30K· 18.64 mi
2:09:02
Rank: #5341 (+246)
25K → 30K
21:50 | 7:02/mi
20M
2:18:34
Rank: #5219 (+122)
30K → 20M
9:32 | 7:01/mi
21M
2:25:58
Rank: #5096 (+123)
20M → 21M
7:24 | 7:24/mi
35K· 21.75 mi
2:31:04
Rank: #5052 (+44)
21M → 35K
5:06 | 6:49/mi
23M
2:39:40
Rank: #4869 (+183)
35K → 23M
8:36 | 6:52/mi
24M
2:46:39
Rank: #4825 (+44)
23M → 24M
6:59 | 6:59/mi
40K· 24.85 mi
2:52:39
Rank: #4748 (+77)
24M → 40K
6:00 | 7:01/mi
25.2M
2:55:15
Rank: #4727 (+21)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
3:02:10
Rank: #4654 (+73)
25.2M → Finish
6:55 | 6:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:23
Pace6:54 /mi
2nd Half
Distance13.11 mi
Time1:31:47
Pace7:00 /mi
📊Positive Split: 1.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:0921:487:0121:48
7:01
-
10K
6.21 mi11:10:1542:546:5421:06
6:47
-0:14
15K
9.32 mi11:31:231:04:026:5221:08
6:48
+0:01
20K
12.43 mi11:53:001:25:396:5421:37
6:57
+0:09
Half
13.11 mi11:57:441:30:236:544:44
6:56
-0:01
25K
15.53 mi12:14:331:47:126:5416:49
6:56
0:00
30K
18.64 mi12:36:232:09:026:5521:50
7:02
+0:06
20M
20.00 mi12:45:552:18:346:569:32
7:01
-0:01
21M
21.00 mi12:53:192:25:586:577:24
7:24
+0:23
35K
21.75 mi12:58:252:31:046:575:06
6:49
-0:35
23M
23.00 mi13:07:012:39:406:578:36
6:52
+0:03
24M
24.00 mi13:14:002:46:396:576:59
6:59
+0:07
40K
24.85 mi13:20:002:52:396:576:00
7:01
+0:02
25.2M
25.20 mi13:22:362:55:156:572:36
7:32
+0:31
Finish
26.22 mi13:29:313:02:106:576:55
6:47
-0:45

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

6:47 /mi

Average Pace

6:57 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:59:34

99% of race

Time at Steady Pace

2:36

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:57 /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 mi10:49:0921:487:0121:48
7:01
#6353
10K
6.21 mi11:10:1542:546:5421:06
6:47
#5859
15K
9.32 mi11:31:231:04:026:5221:08
6:48
#5633
20K
12.43 mi11:53:001:25:396:5421:37
6:57
#5663
Half
13.11 mi11:57:441:30:236:544:44
6:56
#5686
25K
15.53 mi12:14:331:47:126:5416:49
6:56
#5587
30K
18.64 mi12:36:232:09:026:5521:50
7:02
#5341
20M
20.00 mi12:45:552:18:346:569:32
7:01
#5219
21M
21.00 mi12:53:192:25:586:577:24
7:24
#5096
35K
21.75 mi12:58:252:31:046:575:06
6:49
#5052
23M
23.00 mi13:07:012:39:406:578:36
6:52
#4869
24M
24.00 mi13:14:002:46:396:576:59
6:59
#4825
40K
24.85 mi13:20:002:52:396:576:00
7:01
#4748
25.2M
25.20 mi13:22:362:55:156:572:36
7:32
#4727
Finish
26.22 mi13:29:313:02:106:576:55
6:47
#4654
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi63535655655174(Top 19%)383(Top 3%)383(Top 8%)
10K6.21 mi3.10 mi5859+494481+84481+845241(Top 20%)386(Top 3%)386(Top 8%)
15K9.32 mi3.11 mi5633+226445+36445+365174(Top 19%)383(Top 3%)383(Top 8%)
20K12.43 mi3.11 mi5663-30442+3442+35720(Top 21%)468(Top 4%)468(Top 10%)
Half13.11 mi0.68 mi5686-23443-1443-16251(Top 23%)551(Top 5%)551(Top 11%)
25K15.53 mi2.42 mi5587+99434+9434+95206(Top 20%)399(Top 3%)399(Top 8%)
30K18.64 mi3.11 mi5341+246404+30404+304541(Top 17%)334(Top 3%)334(Top 7%)
20M20.00 mi1.36 mi5219+122391+13391+134143(Top 16%)312(Top 3%)312(Top 6%)
21M21.00 mi1.00 mi5096+123382+9382+94146(Top 16%)338(Top 3%)338(Top 7%)
35K21.75 mi0.75 mi5052+44379+3379+34355(Top 16%)364(Top 3%)364(Top 7%)
23M23.00 mi1.25 mi4869+183354+25354+253082(Top 12%)209(Top 2%)209(Top 4%)
24M24.00 mi1.00 mi4825+44353+1353+14621(Top 17%)466(Top 4%)466(Top 10%)
40K24.85 mi0.85 mi4748+77346+7346+73961(Top 15%)399(Top 3%)399(Top 8%)
25.2M25.20 mi0.35 mi4727+21344+2344+24139(Top 16%)465(Top 4%)465(Top 10%)
Finish26.22 mi1.02 mi4654+73343+1343+14028(Top 15%)464(Top 4%)464(Top 10%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5174

Females

383

F18-39

383

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5241

Females

386

F18-39

386

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5174

Females

383

F18-39

383

15K→20K

9.3 - 12.4 mi

Top 21%
×5stories
+106ft-86ft

Overall

5720

Females

468

F18-39

468

20K→Half

12.4 - 13.1 mi

Top 23%
×2stories
+19ft-37ft

Overall

6251

Females

551

F18-39

551

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5206

Females

399

F18-39

399

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4541

Females

334

F18-39

334

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4143

Females

312

F18-39

312

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4146

Females

338

F18-39

338

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4355

Females

364

F18-39

364

35K→23M

21.8 - 23.0 mi

Top 12%
×5stories
+23ft-63ft

Overall

3082

Females

209

F18-39

209

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4621

Females

466

F18-39

466

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

3961

Females

399

F18-39

399

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4139

Females

465

F18-39

465

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2stories
+22ft-21ft

Overall

4028

Females

464

F18-39

464

Passing Analysis

Category:
Athletes Passed
2086
Passed By
387
Net Change
+1699
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6353
5K → 10K53036+494#6353#5859
10K → 15K25832+226#5859#5633
15K → 20K99129-30#5633#5663
20K → Half1033-23#5663#5686
Half → 25K12728+99#5686#5587
25K → 30K27024+246#5587#5341
30K → 20M14220+122#5341#5219
20M → 21M13411+123#5219#5096
21M → 35K5410+44#5096#5052
35K → 23M1874+183#5052#4869
23M → 24M6824+44#4869#4825
24M → 40K858+77#4825#4748
40K → 25.2M276+21#4748#4727
25.2M → Finish9522+73#4727#4654
TOTALS2086387+1699
📊

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