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BOSTON MARATHON 2023

Stephanie Choi

Bib: 11407•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 21%
Gender (Female)
#0 / 11423
Top 5%
Division (F18-39)
#0 / 4884
Top 9%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:43
Rank: #8185
Start → 5K
22:43 | 7:19/mi
10K· 6.21 mi
45:11
Rank: #8266 (-81)
5K → 10K
22:28 | 7:14/mi
15K· 9.32 mi
1:07:29
Rank: #8044 (+222)
10K → 15K
22:18 | 7:11/mi
20K· 12.43 mi
1:29:35
Rank: #7612 (+432)
15K → 20K
22:06 | 7:07/mi
Half· 13.11 mi
1:34:17
Rank: #7501 (+111)
20K → Half
4:42 | 6:53/mi
25K· 15.53 mi
1:51:04
Rank: #7055 (+446)
Half → 25K
16:47 | 6:55/mi
30K· 18.64 mi
2:13:13
Rank: #6664 (+391)
25K → 30K
22:09 | 7:08/mi
20M
2:22:53
Rank: #6486 (+178)
30K → 20M
9:40 | 7:07/mi
21M
2:30:27
Rank: #6357 (+129)
20M → 21M
7:34 | 7:34/mi
35K· 21.75 mi
2:35:34
Rank: #6277 (+80)
21M → 35K
5:07 | 6:50/mi
23M
2:44:30
Rank: #6122 (+155)
35K → 23M
8:56 | 7:08/mi
24M
2:51:24
Rank: #5980 (+142)
23M → 24M
6:54 | 6:54/mi
40K· 24.85 mi
2:57:25
Rank: #5863 (+117)
24M → 40K
6:01 | 7:02/mi
25.2M
3:00:02
Rank: #5821 (+42)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
3:06:53
Rank: #5672 (+149)
25.2M → Finish
6:51 | 6:43/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:34:17
Pace7:12 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:32:36
Pace7:04 /mi
📊Negative Split: 1.8% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:2922:437:1922:43
7:19
-
10K
6.21 mi11:11:5745:117:1622:28
7:14
-0:05
15K
9.32 mi11:34:151:07:297:1422:18
7:11
-0:03
20K
12.43 mi11:56:211:29:357:1322:06
7:07
-0:04
Half
13.11 mi12:01:031:34:177:124:42
6:53
-0:14
25K
15.53 mi12:17:501:51:047:0916:47
6:55
+0:02
30K
18.64 mi12:39:592:13:137:0922:09
7:08
+0:13
20M
20.00 mi12:49:392:22:537:099:40
7:07
-0:01
21M
21.00 mi12:57:132:30:277:107:34
7:34
+0:27
35K
21.75 mi13:02:202:35:347:095:07
6:50
-0:44
23M
23.00 mi13:11:162:44:307:098:56
7:08
+0:18
24M
24.00 mi13:18:102:51:247:096:54
6:54
-0:14
40K
24.85 mi13:24:112:57:257:086:01
7:02
+0:08
25.2M
25.20 mi13:26:483:00:027:092:37
7:35
+0:33
Finish
26.22 mi13:33:393:06:537:086:51
6:43
-0:52

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

6:43 /mi

Average Pace

7:08 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:42

95% of race

Time at Steady Pace

10:11

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:08 /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 mi10:49:2922:437:1922:43
7:19
#8185
10K
6.21 mi11:11:5745:117:1622:28
7:14
#8266
15K
9.32 mi11:34:151:07:297:1422:18
7:11
#8044
20K
12.43 mi11:56:211:29:357:1322:06
7:07
#7612
Half
13.11 mi12:01:031:34:177:124:42
6:53
#7501
25K
15.53 mi12:17:501:51:047:0916:47
6:55
#7055
30K
18.64 mi12:39:592:13:137:0922:09
7:08
#6664
20M
20.00 mi12:49:392:22:537:099:40
7:07
#6486
21M
21.00 mi12:57:132:30:277:107:34
7:34
#6357
35K
21.75 mi13:02:202:35:347:095:07
6:50
#6277
23M
23.00 mi13:11:162:44:307:098:56
7:08
#6122
24M
24.00 mi13:18:102:51:247:096:54
6:54
#5980
40K
24.85 mi13:24:112:57:257:086:01
7:02
#5863
25.2M
25.20 mi13:26:483:00:027:092:37
7:35
#5821
Finish
26.22 mi13:33:393:06:537:086:51
6:43
#5672
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8185107310737653(Top 29%)945(Top 8%)945(Top 19%)
10K6.21 mi3.10 mi8266-811126-531126-538339(Top 31%)1158(Top 10%)1158(Top 24%)
15K9.32 mi3.11 mi8044+2221054+721054+727653(Top 29%)945(Top 8%)945(Top 19%)
20K12.43 mi3.11 mi7612+432919+135919+1356622(Top 25%)682(Top 6%)682(Top 14%)
Half13.11 mi0.68 mi7501+111885+34885+345986(Top 22%)506(Top 4%)506(Top 10%)
25K15.53 mi2.42 mi7055+446769+116769+1165125(Top 19%)393(Top 3%)393(Top 8%)
30K18.64 mi3.11 mi6664+391693+76693+765097(Top 19%)416(Top 4%)416(Top 9%)
20M20.00 mi1.36 mi6486+178661+32661+324709(Top 18%)405(Top 4%)405(Top 8%)
21M21.00 mi1.00 mi6357+129635+26635+264946(Top 19%)507(Top 4%)507(Top 10%)
35K21.75 mi0.75 mi6277+80622+13622+134500(Top 17%)396(Top 3%)396(Top 8%)
23M23.00 mi1.25 mi6122+155600+22600+224507(Top 17%)418(Top 4%)418(Top 9%)
24M24.00 mi1.00 mi5980+142580+20580+204203(Top 16%)379(Top 3%)379(Top 8%)
40K24.85 mi0.85 mi5863+117564+16564+164075(Top 15%)428(Top 4%)428(Top 9%)
25.2M25.20 mi0.35 mi5821+42558+6558+64388(Top 16%)543(Top 5%)543(Top 11%)
Finish26.22 mi1.02 mi5672+149539+19539+193670(Top 14%)394(Top 3%)394(Top 8%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21stories
+97ft-345ft

Overall

7653

Females

945

F18-39

945

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8339

Females

1158

F18-39

1158

10K→15K

6.2 - 9.3 mi

Top 29%
×3stories
+67ft-78ft

Overall

7653

Females

945

F18-39

945

15K→20K

9.3 - 12.4 mi

Top 25%
×5stories
+106ft-86ft

Overall

6622

Females

682

F18-39

682

20K→Half

12.4 - 13.1 mi

Top 22%
×2stories
+19ft-37ft

Overall

5986

Females

506

F18-39

506

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5125

Females

393

F18-39

393

25K→30K

15.5 - 18.6 mi

Top 19%
×9stories
+181ft-148ft

Overall

5097

Females

416

F18-39

416

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

4709

Females

405

F18-39

405

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

4946

Females

507

F18-39

507

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4500

Females

396

F18-39

396

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4507

Females

418

F18-39

418

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4203

Females

379

F18-39

379

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

4075

Females

428

F18-39

428

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4388

Females

543

F18-39

543

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

3670

Females

394

F18-39

394

Passing Analysis

Category:
Athletes Passed
2880
Passed By
367
Net Change
+2513
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8185
5K → 10K182263-81#8185#8266
10K → 15K27149+222#8266#8044
15K → 20K4408+432#8044#7612
20K → Half1110+111#7612#7501
Half → 25K4460+446#7501#7055
25K → 30K3932+391#7055#6664
30K → 20M1846+178#6664#6486
20M → 21M1345+129#6486#6357
21M → 35K844+80#6357#6277
35K → 23M1638+155#6277#6122
23M → 24M1453+142#6122#5980
24M → 40K1236+117#5980#5863
40K → 25.2M464+42#5863#5821
25.2M → Finish1589+149#5821#5672
TOTALS2880367+2513
📊

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