Boston Marathon logo
BOSTON MARATHON 2023

Yihang Li

Bib: 19099•F

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 45%
Gender (Female)
#0 / 11423
Top 27%
Division (F18-39)
#0 / 4884
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:17
Rank: #14987
Start → 5K
25:17 | 8:08/mi
10K· 6.21 mi
49:42
Rank: #14376 (+611)
5K → 10K
24:25 | 7:52/mi
15K· 9.32 mi
1:14:09
Rank: #14016 (+360)
10K → 15K
24:27 | 7:52/mi
20K· 12.43 mi
1:38:44
Rank: #13660 (+356)
15K → 20K
24:35 | 7:55/mi
Half· 13.11 mi
1:44:09
Rank: #13666 (-6)
20K → Half
5:25 | 7:56/mi
25K· 15.53 mi
2:03:30
Rank: #13470 (+196)
Half → 25K
19:21 | 7:59/mi
30K· 18.64 mi
2:28:31
Rank: #13041 (+429)
25K → 30K
25:01 | 8:03/mi
20M
2:39:28
Rank: #12824 (+217)
30K → 20M
10:57 | 8:03/mi
21M
2:47:54
Rank: #12620 (+204)
20M → 21M
8:26 | 8:26/mi
35K· 21.75 mi
2:53:41
Rank: #12513 (+107)
21M → 35K
5:47 | 7:44/mi
23M
3:03:45
Rank: #12364 (+149)
35K → 23M
10:04 | 8:02/mi
24M
3:11:32
Rank: #12246 (+118)
23M → 24M
7:47 | 7:47/mi
40K· 24.85 mi
3:18:22
Rank: #12133 (+113)
24M → 40K
6:50 | 8:00/mi
25.2M
3:21:15
Rank: #12067 (+66)
40K → 25.2M
2:53 | 8:22/mi
Finish· 26.22 mi
3:29:09
Rank: #12002 (+65)
25.2M → Finish
7:54 | 7:45/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:44:09
Pace7:57 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:45:00
Pace8:01 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:1325:178:0825:17
8:08
-
10K
6.21 mi11:41:3849:428:0024:25
7:52
-0:16
15K
9.32 mi12:06:051:14:097:5724:27
7:52
0:00
20K
12.43 mi12:30:401:38:447:5724:35
7:55
+0:03
Half
13.11 mi12:36:051:44:097:575:25
7:56
+0:01
25K
15.53 mi12:55:262:03:307:5719:21
7:59
+0:03
30K
18.64 mi13:20:272:28:317:5825:01
8:03
+0:04
20M
20.00 mi13:31:242:39:287:5810:57
8:03
0:00
21M
21.00 mi13:39:502:47:548:008:26
8:26
+0:23
35K
21.75 mi13:45:372:53:417:595:47
7:44
-0:42
23M
23.00 mi13:55:413:03:457:5910:04
8:02
+0:18
24M
24.00 mi14:03:283:11:327:597:47
7:47
-0:15
40K
24.85 mi14:10:183:18:227:596:50
8:00
+0:13
25.2M
25.20 mi14:13:113:21:157:592:53
8:22
+0:22
Finish
26.22 mi14:21:053:29:097:597:54
7:45
-0:37

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

7:44 /mi

Average Pace

7:59 /mi

Slowest Pace

8:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:52:33

83% of race

Time at Steady Pace

36:36

17% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:59 /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 mi11:17:1325:178:0825:17
8:08
#14987
10K
6.21 mi11:41:3849:428:0024:25
7:52
#14376
15K
9.32 mi12:06:051:14:097:5724:27
7:52
#14016
20K
12.43 mi12:30:401:38:447:5724:35
7:55
#13660
Half
13.11 mi12:36:051:44:097:575:25
7:56
#13666
25K
15.53 mi12:55:262:03:307:5719:21
7:59
#13470
30K
18.64 mi13:20:272:28:317:5825:01
8:03
#13041
20M
20.00 mi13:31:242:39:287:5810:57
8:03
#12824
21M
21.00 mi13:39:502:47:548:008:26
8:26
#12620
35K
21.75 mi13:45:372:53:417:595:47
7:44
#12513
23M
23.00 mi13:55:413:03:457:5910:04
8:02
#12364
24M
24.00 mi14:03:283:11:327:597:47
7:47
#12246
40K
24.85 mi14:10:183:18:227:596:50
8:00
#12133
25.2M
25.20 mi14:13:113:21:157:592:53
8:22
#12067
Finish
26.22 mi14:21:053:29:097:597:54
7:45
#12002
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi149874629462913269(Top 50%)3644(Top 32%)3644(Top 75%)
10K6.21 mi3.10 mi14376+6114267+3624267+36213643(Top 51%)3817(Top 33%)3817(Top 78%)
15K9.32 mi3.11 mi14016+3604067+2004067+20013269(Top 50%)3644(Top 32%)3644(Top 75%)
20K12.43 mi3.11 mi13660+3563887+1803887+18012733(Top 48%)3395(Top 30%)3395(Top 70%)
Half13.11 mi0.68 mi13666-63888-13888-113892(Top 52%)4001(Top 35%)4001(Top 82%)
25K15.53 mi2.42 mi13470+1963788+1003788+10012593(Top 47%)3410(Top 30%)3410(Top 70%)
30K18.64 mi3.11 mi13041+4293574+2143574+21411331(Top 43%)2806(Top 25%)2806(Top 57%)
20M20.00 mi1.36 mi12824+2173464+1103464+11010745(Top 40%)2613(Top 23%)2613(Top 54%)
21M21.00 mi1.00 mi12620+2043369+953369+9510111(Top 38%)2444(Top 21%)2444(Top 50%)
35K21.75 mi0.75 mi12513+1073319+503319+5010206(Top 38%)2475(Top 22%)2475(Top 51%)
23M23.00 mi1.25 mi12364+1493259+603259+6010073(Top 38%)2550(Top 22%)2550(Top 52%)
24M24.00 mi1.00 mi12246+1183215+443215+449710(Top 36%)2459(Top 22%)2459(Top 50%)
40K24.85 mi0.85 mi12133+1133177+383177+3810038(Top 38%)2675(Top 23%)2675(Top 55%)
25.2M25.20 mi0.35 mi12067+663145+323145+328769(Top 33%)2172(Top 19%)2172(Top 44%)
Finish26.22 mi1.02 mi12002+653128+173128+1710353(Top 39%)2870(Top 25%)2870(Top 59%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21stories
+97ft-345ft

Overall

13269

Females

3644

F18-39

3644

5K→10K

3.1 - 6.2 mi

Top 51%
×5stories
+79ft-138ft

Overall

13643

Females

3817

F18-39

3817

10K→15K

6.2 - 9.3 mi

Top 50%
×3stories
+67ft-78ft

Overall

13269

Females

3644

F18-39

3644

15K→20K

9.3 - 12.4 mi

Top 48%
×5stories
+106ft-86ft

Overall

12733

Females

3395

F18-39

3395

20K→Half

12.4 - 13.1 mi

Top 52%
×2stories
+19ft-37ft

Overall

13892

Females

4001

F18-39

4001

Half→25K

13.1 - 15.5 mi

Top 47%
×4stories
+66ft-88ft

Overall

12593

Females

3410

F18-39

3410

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

11331

Females

2806

F18-39

2806

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

10745

Females

2613

F18-39

2613

20M→21M

20.0 - 21.0 mi

Top 38%
×8stories
+106ft-24ft

Overall

10111

Females

2444

F18-39

2444

21M→35K

21.0 - 21.8 mi

Top 38%
×7stories
+17ft-86ft

Overall

10206

Females

2475

F18-39

2475

35K→23M

21.8 - 23.0 mi

Top 38%
×5stories
+23ft-63ft

Overall

10073

Females

2550

F18-39

2550

23M→24M

23.0 - 24.0 mi

Top 36%
×6stories
+12ft-82ft

Overall

9710

Females

2459

F18-39

2459

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10038

Females

2675

F18-39

2675

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8769

Females

2172

F18-39

2172

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2stories
+22ft-21ft

Overall

10353

Females

2870

F18-39

2870

Passing Analysis

Category:
Athletes Passed
3387
Passed By
402
Net Change
+2985
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14987
5K → 10K70796+611#14987#14376
10K → 15K41959+360#14376#14016
15K → 20K38630+356#14016#13660
20K → Half2026-6#13660#13666
Half → 25K23438+196#13666#13470
25K → 30K45627+429#13470#13041
30K → 20M22912+217#13041#12824
20M → 21M21814+204#12824#12620
21M → 35K1169+107#12620#12513
35K → 23M17526+149#12513#12364
23M → 24M12810+118#12364#12246
24M → 40K12512+113#12246#12133
40K → 25.2M682+66#12133#12067
25.2M → Finish10641+65#12067#12002
TOTALS3387402+2985
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing