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BOSTON MARATHON 2023

Yiran Li

Bib: 16897•F

DC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 14%
Division (F18-39)
#0 / 4884
Top 26%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:12
Rank: #12253
Start → 5K
24:12 | 7:47/mi
10K· 6.21 mi
47:38
Rank: #11487 (+766)
5K → 10K
23:26 | 7:33/mi
15K· 9.32 mi
1:10:49
Rank: #10912 (+575)
10K → 15K
23:11 | 7:28/mi
20K· 12.43 mi
1:34:09
Rank: #10482 (+430)
15K → 20K
23:20 | 7:31/mi
Half· 13.11 mi
1:39:12
Rank: #10433 (+49)
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:57:25
Rank: #10126 (+307)
Half → 25K
18:13 | 7:31/mi
30K· 18.64 mi
2:21:13
Rank: #9787 (+339)
25K → 30K
23:48 | 7:40/mi
20M
2:31:41
Rank: #9627 (+160)
30K → 20M
10:28 | 7:42/mi
21M
2:39:48
Rank: #9504 (+123)
20M → 21M
8:07 | 8:07/mi
35K· 21.75 mi
2:45:23
Rank: #9449 (+55)
21M → 35K
5:35 | 7:28/mi
23M
2:55:11
Rank: #9342 (+107)
35K → 23M
9:48 | 7:50/mi
24M
3:02:40
Rank: #9231 (+111)
23M → 24M
7:29 | 7:29/mi
40K· 24.85 mi
3:09:11
Rank: #9142 (+89)
24M → 40K
6:31 | 7:37/mi
25.2M
3:11:58
Rank: #9112 (+30)
40K → 25.2M
2:47 | 8:04/mi
Finish· 26.22 mi
3:19:25
Rank: #9023 (+89)
25.2M → Finish
7:27 | 7:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:12
Pace7:34 /mi
2nd Half
Distance13.11 mi
Time1:40:13
Pace7:39 /mi
📊Positive Split: 1.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:5424:127:4724:12
7:47
-
10K
6.21 mi11:38:2047:387:4023:26
7:33
-0:14
15K
9.32 mi12:01:311:10:497:3623:11
7:28
-0:05
20K
12.43 mi12:24:511:34:097:3523:20
7:31
+0:03
Half
13.11 mi12:29:541:39:127:345:03
7:24
-0:07
25K
15.53 mi12:48:071:57:257:3418:13
7:31
+0:07
30K
18.64 mi13:11:552:21:137:3523:48
7:40
+0:09
20M
20.00 mi13:22:232:31:417:3510:28
7:42
+0:02
21M
21.00 mi13:30:302:39:487:378:07
8:07
+0:25
35K
21.75 mi13:36:052:45:237:365:35
7:28
-0:39
23M
23.00 mi13:45:532:55:117:379:48
7:50
+0:22
24M
24.00 mi13:53:223:02:407:377:29
7:29
-0:21
40K
24.85 mi13:59:533:09:117:376:31
7:37
+0:08
25.2M
25.20 mi14:02:403:11:587:372:47
8:04
+0:27
Finish
26.22 mi14:10:073:19:257:377:27
7:19
-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

7:19 /mi

Average Pace

7:37 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:08:31

95% of race

Time at Steady Pace

10:54

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:36 /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 mi11:14:5424:127:4724:12
7:47
#12253
10K
6.21 mi11:38:2047:387:4023:26
7:33
#11487
15K
9.32 mi12:01:311:10:497:3623:11
7:28
#10912
20K
12.43 mi12:24:511:34:097:3523:20
7:31
#10482
Half
13.11 mi12:29:541:39:127:345:03
7:24
#10433
25K
15.53 mi12:48:071:57:257:3418:13
7:31
#10126
30K
18.64 mi13:11:552:21:137:3523:48
7:40
#9787
20M
20.00 mi13:22:232:31:417:3510:28
7:42
#9627
21M
21.00 mi13:30:302:39:487:378:07
8:07
#9504
35K
21.75 mi13:36:052:45:237:365:35
7:28
#9449
23M
23.00 mi13:45:532:55:117:379:48
7:50
#9342
24M
24.00 mi13:53:223:02:407:377:29
7:29
#9231
40K
24.85 mi13:59:533:09:117:376:31
7:37
#9142
25.2M
25.20 mi14:02:403:11:587:372:47
8:04
#9112
Finish
26.22 mi14:10:073:19:257:377:27
7:19
#9023
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi12253300430049883(Top 37%)1788(Top 16%)1788(Top 37%)
10K6.21 mi3.10 mi11487+7662593+4112593+41110826(Top 41%)2216(Top 19%)2216(Top 45%)
15K9.32 mi3.11 mi10912+5752286+3072286+3079883(Top 37%)1788(Top 16%)1788(Top 37%)
20K12.43 mi3.11 mi10482+4302061+2252061+2259399(Top 35%)1646(Top 14%)1646(Top 34%)
Half13.11 mi0.68 mi10433+492042+192042+199486(Top 36%)1666(Top 15%)1666(Top 34%)
25K15.53 mi2.42 mi10126+3071914+1281914+1288896(Top 33%)1522(Top 13%)1522(Top 31%)
30K18.64 mi3.11 mi9787+3391798+1161798+1168382(Top 31%)1462(Top 13%)1462(Top 30%)
20M20.00 mi1.36 mi9627+1601762+361762+368233(Top 31%)1492(Top 13%)1492(Top 31%)
21M21.00 mi1.00 mi9504+1231734+281734+288142(Top 31%)1580(Top 14%)1580(Top 32%)
35K21.75 mi0.75 mi9449+551728+61728+68313(Top 31%)1615(Top 14%)1615(Top 33%)
23M23.00 mi1.25 mi9342+1071707+211707+218618(Top 32%)1845(Top 16%)1845(Top 38%)
24M24.00 mi1.00 mi9231+1111689+181689+187624(Top 29%)1529(Top 13%)1529(Top 31%)
40K24.85 mi0.85 mi9142+891672+171672+177479(Top 28%)1552(Top 14%)1552(Top 32%)
25.2M25.20 mi0.35 mi9112+301669+31669+36994(Top 26%)1417(Top 12%)1417(Top 29%)
Finish26.22 mi1.02 mi9023+891656+131656+137224(Top 27%)1517(Top 13%)1517(Top 31%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21stories
+97ft-345ft

Overall

9883

Females

1788

F18-39

1788

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10826

Females

2216

F18-39

2216

10K→15K

6.2 - 9.3 mi

Top 37%
×3stories
+67ft-78ft

Overall

9883

Females

1788

F18-39

1788

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9399

Females

1646

F18-39

1646

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

9486

Females

1666

F18-39

1666

Half→25K

13.1 - 15.5 mi

Top 33%
×4stories
+66ft-88ft

Overall

8896

Females

1522

F18-39

1522

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

8382

Females

1462

F18-39

1462

30K→20M

18.6 - 20.0 mi

Top 31%
×5stories
+64ft-50ft

Overall

8233

Females

1492

F18-39

1492

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8142

Females

1580

F18-39

1580

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8313

Females

1615

F18-39

1615

35K→23M

21.8 - 23.0 mi

Top 32%
×5stories
+23ft-63ft

Overall

8618

Females

1845

F18-39

1845

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7624

Females

1529

F18-39

1529

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7479

Females

1552

F18-39

1552

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

6994

Females

1417

F18-39

1417

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

7224

Females

1517

F18-39

1517

Passing Analysis

Category:
Athletes Passed
3568*
Passed By
338
Net Change
+3230
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12253
5K → 10K84175+766#12253#11487
10K → 15K59823+575#11487#10912
15K → 20K45525+430#10912#10482
20K → Half6011+49#10482#10433
Half → 25K32417+307#10433#10126
25K → 30K369*30+339#10126#9787
30K → 20M17515+160#9787#9627
20M → 21M13815+123#9627#9504
21M → 35K8126+55#9504#9449
35K → 23M13528+107#9449#9342
23M → 24M12817+111#9342#9231
24M → 40K10415+89#9231#9142
40K → 25.2M4010+30#9142#9112
25.2M → Finish12031+89#9112#9023
TOTALS3568*338+3230

* 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