Boston Marathon logo
BOSTON MARATHON 2023

Jenny Li

Bib: 26528•F

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:15
Rank: #22756
Start → 5K
30:15 | 9:44/mi
10K· 6.21 mi
1:00:36
Rank: #23045 (-289)
5K → 10K
30:21 | 9:46/mi
15K· 9.32 mi
1:30:48
Rank: #22995 (+50)
10K → 15K
30:12 | 9:43/mi
20K· 12.43 mi
2:02:02
Rank: #22989 (+6)
15K → 20K
31:14 | 10:03/mi
Half· 13.11 mi
2:09:01
Rank: #23042 (-53)
20K → Half
6:59 | 10:14/mi
25K· 15.53 mi
2:34:33
Rank: #23065 (-23)
Half → 25K
25:32 | 10:32/mi
30K· 18.64 mi
3:08:12
Rank: #23036 (+29)
25K → 30K
33:39 | 10:50/mi
20M
3:22:47
Rank: #22958 (+78)
30K → 20M
14:35 | 10:44/mi
21M
3:34:26
Rank: #22901 (+57)
20M → 21M
11:39 | 11:39/mi
35K· 21.75 mi
3:42:36
Rank: #22909 (-8)
21M → 35K
8:10 | 10:55/mi
23M
3:55:44
Rank: #22816 (+93)
35K → 23M
13:08 | 10:29/mi
24M
4:06:05
Rank: #22766 (+50)
23M → 24M
10:21 | 10:21/mi
40K· 24.85 mi
4:15:27
Rank: #22740 (+26)
24M → 40K
9:22 | 10:57/mi
25.2M
4:19:27
Rank: #22721 (+19)
40K → 25.2M
4:00 | 11:36/mi
Finish· 26.22 mi
4:28:46
Rank: #22631 (+90)
25.2M → Finish
9:19 | 9:09/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 HalfFaster
Distance13.11 mi
Time2:09:01
Pace9:50 /mi
2nd Half
Distance13.11 mi
Time2:19:45
Pace10:40 /mi
📊Positive Split: 8.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:0430:159:4430:15
9:44
-
10K
6.21 mi12:17:251:00:369:4530:21
9:46
+0:02
15K
9.32 mi12:47:371:30:489:4530:12
9:43
-0:03
20K
12.43 mi13:18:512:02:029:4931:14
10:03
+0:20
Half
13.11 mi13:25:502:09:019:506:59
10:14
+0:11
25K
15.53 mi13:51:222:34:339:5725:32
10:32
+0:18
30K
18.64 mi14:25:013:08:1210:0633:39
10:50
+0:18
20M
20.00 mi14:39:363:22:4710:0814:35
10:44
-0:06
21M
21.00 mi14:51:153:34:2610:1311:39
11:39
+0:55
35K
21.75 mi14:59:253:42:3610:148:10
10:55
-0:44
23M
23.00 mi15:12:333:55:4410:1513:08
10:29
-0:26
24M
24.00 mi15:22:544:06:0510:1510:21
10:21
-0:08
40K
24.85 mi15:32:164:15:2710:179:22
10:57
+0:36
25.2M
25.20 mi15:36:164:19:2710:184:00
11:36
+0:39
Finish
26.22 mi15:45:354:28:4610:159:19
9:09
-2:27

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

9:09 /mi

Average Pace

10:15 /mi

Slowest Pace

11:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:21

49% of race

Time at Steady Pace

1:10:35

26% of race

Time at Slower Pace

1:06:50

25% of race

Average Pace: 10:15 /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 mi11:47:0430:159:4430:15
9:44
#22756
10K
6.21 mi12:17:251:00:369:4530:21
9:46
#23045
15K
9.32 mi12:47:371:30:489:4530:12
9:43
#22995
20K
12.43 mi13:18:512:02:029:4931:14
10:03
#22989
Half
13.11 mi13:25:502:09:019:506:59
10:14
#23042
25K
15.53 mi13:51:222:34:339:5725:32
10:32
#23065
30K
18.64 mi14:25:013:08:1210:0633:39
10:50
#23036
20M
20.00 mi14:39:363:22:4710:0814:35
10:44
#22958
21M
21.00 mi14:51:153:34:2610:1311:39
11:39
#22901
35K
21.75 mi14:59:253:42:3610:148:10
10:55
#22909
23M
23.00 mi15:12:333:55:4410:1513:08
10:29
#22816
24M
24.00 mi15:22:544:06:0510:1510:21
10:21
#22766
40K
24.85 mi15:32:164:15:2710:179:22
10:57
#22740
25.2M
25.20 mi15:36:164:19:2710:184:00
11:36
#22721
Finish
26.22 mi15:45:354:28:4610:159:19
9:09
#22631
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi227569259925922864(Top 86%)9266(Top 81%)9266(Top 190%)
10K6.21 mi3.10 mi23045-2899390-1319390-13123212(Top 87%)9453(Top 83%)9453(Top 194%)
15K9.32 mi3.11 mi22995+509354+369354+3622864(Top 86%)9266(Top 81%)9266(Top 190%)
20K12.43 mi3.11 mi22989+69341+139341+1323032(Top 87%)9363(Top 82%)9363(Top 192%)
Half13.11 mi0.68 mi23042-539369-289369-2823735(Top 89%)9756(Top 85%)9756(Top 200%)
25K15.53 mi2.42 mi23065-239393-249393-2423248(Top 87%)9521(Top 83%)9521(Top 195%)
30K18.64 mi3.11 mi23036+299403-109403-1022847(Top 86%)9376(Top 82%)9376(Top 192%)
20M20.00 mi1.36 mi22958+789375+289375+2822227(Top 83%)9107(Top 80%)9107(Top 186%)
21M21.00 mi1.00 mi22901+579355+209355+2022162(Top 83%)9089(Top 80%)9089(Top 186%)
35K21.75 mi0.75 mi22909-89369-149369-1423158(Top 87%)9672(Top 85%)9672(Top 198%)
23M23.00 mi1.25 mi22816+939334+359334+3521305(Top 80%)8687(Top 76%)8687(Top 178%)
24M24.00 mi1.00 mi22766+509311+239311+2321682(Top 81%)8936(Top 78%)8936(Top 183%)
40K24.85 mi0.85 mi22740+269301+109301+1022269(Top 84%)9278(Top 81%)9278(Top 190%)
25.2M25.20 mi0.35 mi22721+199296+59296+521789(Top 82%)9014(Top 79%)9014(Top 185%)
Finish26.22 mi1.02 mi22631+909255+419255+4118693(Top 70%)7286(Top 64%)7286(Top 149%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21stories
+97ft-345ft

Overall

22864

Females

9266

F18-39

9266

5K→10K

3.1 - 6.2 mi

Top 87%
×5stories
+79ft-138ft

Overall

23212

Females

9453

F18-39

9453

10K→15K

6.2 - 9.3 mi

Top 86%
×3stories
+67ft-78ft

Overall

22864

Females

9266

F18-39

9266

15K→20K

9.3 - 12.4 mi

Top 87%
×5stories
+106ft-86ft

Overall

23032

Females

9363

F18-39

9363

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

23735

Females

9756

F18-39

9756

Half→25K

13.1 - 15.5 mi

Top 87%
×4stories
+66ft-88ft

Overall

23248

Females

9521

F18-39

9521

25K→30K

15.5 - 18.6 mi

Top 86%
×9stories
+181ft-148ft

Overall

22847

Females

9376

F18-39

9376

30K→20M

18.6 - 20.0 mi

Top 83%
×5stories
+64ft-50ft

Overall

22227

Females

9107

F18-39

9107

20M→21M

20.0 - 21.0 mi

Top 83%
×8stories
+106ft-24ft

Overall

22162

Females

9089

F18-39

9089

21M→35K

21.0 - 21.8 mi

Top 87%
×7stories
+17ft-86ft

Overall

23158

Females

9672

F18-39

9672

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

21305

Females

8687

F18-39

8687

23M→24M

23.0 - 24.0 mi

Top 81%
×6stories
+12ft-82ft

Overall

21682

Females

8936

F18-39

8936

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

22269

Females

9278

F18-39

9278

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

21789

Females

9014

F18-39

9014

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

18693

Females

7286

F18-39

7286

Passing Analysis

Category:
Athletes Passed
1184
Passed By
1059
Net Change
+125
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22756
5K → 10K117406-289#22756#23045
10K → 15K172122+50#23045#22995
15K → 20K134128+6#22995#22989
20K → Half1164-53#22989#23042
Half → 25K80103-23#23042#23065
25K → 30K140111+29#23065#23036
30K → 20M10224+78#23036#22958
20M → 21M7821+57#22958#22901
21M → 35K2331-8#22901#22909
35K → 23M10512+93#22909#22816
23M → 24M6313+50#22816#22766
24M → 40K4216+26#22766#22740
40K → 25.2M245+19#22740#22721
25.2M → Finish933+90#22721#22631
TOTALS11841059+125
📊

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