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BOSTON MARATHON 2025

Yulun Lin

Bib: 20011•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:57
Rank: #22384
Start → 5K
9:00/mi
27:57 split
10K· 6.21 mi
56:44
Rank: #22935 (-551)
5K → 10K
9:16/mi
28:47 split
15K· 9.32 mi
1:26:24
Rank: #23339 (-404)
10K → 15K
9:33/mi
29:40 split
20K· 12.43 mi
2:00:46
Rank: #24346 (-1007)
15K → 20K
11:04/mi
34:22 split
Half· 13.11 mi
2:07:35
Rank: #24350 (-4)
20K → Half
9:59/mi
6:49 split
25K· 15.53 mi
2:33:33
Rank: #24464 (-114)
Half → 25K
10:43/mi
25:58 split
30K· 18.64 mi
3:14:59
Rank: #25155 (-691)
25K → 30K
13:20/mi
41:26 split
20M
3:32:12
Rank: #25257 (-102)
30K → 20M
12:40/mi
17:13 split
21M
3:45:46
Rank: #25312 (-55)
20M → 21M
13:34/mi
13:34 split
35K· 21.75 mi
3:54:38
Rank: #25321 (-9)
21M → 35K
11:51/mi
8:52 split
23M
4:11:38
Rank: #25458 (-137)
35K → 23M
13:35/mi
17:00 split
24M
4:23:21
Rank: #25469 (-11)
23M → 24M
11:43/mi
11:43 split
40K· 24.85 mi
4:33:59
Rank: #25478 (-9)
24M → 40K
12:26/mi
10:38 split
25.2M
4:38:35
Rank: #25486 (-8)
40K → 25.2M
13:20/mi
4:36 split
Finish· 26.22 mi
4:49:46
Rank: #25493 (-7)
25.2M → Finish
10:58/mi
11:11 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:07:35
Pace9:44 /mi
2nd Half
Distance13.11 mi
Time2:42:11
Pace12:22 /mi
📊Positive Split: 27.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:4627:579:0027:57
9:00
-
10K
6.21 mi12:12:3356:449:0828:47
9:16
+0:16
15K
9.32 mi12:42:131:26:249:1629:40
9:33
+0:17
20K
12.43 mi13:16:352:00:469:4334:22
11:04
+1:31
Half
13.11 mi13:23:242:07:359:446:49
9:59
-1:05
25K
15.53 mi13:49:222:33:339:5325:58
10:43
+0:44
30K
18.64 mi14:30:483:14:5910:2841:26
13:20
+2:37
20M
20.00 mi14:48:013:32:1210:3717:13
12:40
-0:40
21M
21.00 mi15:01:353:45:4610:4513:34
13:34
+0:54
35K
21.75 mi15:10:273:54:3810:478:52
11:51
-1:43
23M
23.00 mi15:27:274:11:3810:5617:00
13:35
+1:44
24M
24.00 mi15:39:104:23:2110:5811:43
11:43
-1:52
40K
24.85 mi15:49:484:33:5911:0110:38
12:26
+0:43
25.2M
25.20 mi15:54:244:38:3511:034:36
13:20
+0:54
Finish
26.22 mi16:05:354:49:4611:0411:11
10:58
-2:22

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

9:00 /mi

Average Pace

11:04 /mi

Slowest Pace

13:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:59:11

41% of race

Time at Steady Pace

1:16:46

26% of race

Time at Slower Pace

1:33:49

32% of race

Average Pace: 11:03 /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 mi11:43:4627:579:0027:57
9:00
#22384
10K
6.21 mi12:12:3356:449:0828:47
9:16
#22935
15K
9.32 mi12:42:131:26:249:1629:40
9:33
#23339
20K
12.43 mi13:16:352:00:469:4334:22
11:04
#24346
Half
13.11 mi13:23:242:07:359:446:49
9:59
#24350
25K
15.53 mi13:49:222:33:339:5325:58
10:43
#24464
30K
18.64 mi14:30:483:14:5910:2841:26
13:20
#25155
20M
20.00 mi14:48:013:32:1210:3717:13
12:40
#25257
21M
21.00 mi15:01:353:45:4610:4513:34
13:34
#25312
35K
21.75 mi15:10:273:54:3810:478:52
11:51
#25321
23M
23.00 mi15:27:274:11:3810:5617:00
13:35
#25458
24M
24.00 mi15:39:104:23:2110:5811:43
11:43
#25469
40K
24.85 mi15:49:484:33:5911:0110:38
12:26
#25478
25.2M
25.20 mi15:54:244:38:3511:034:36
13:20
#25486
Finish
26.22 mi16:05:354:49:4611:0411:11
10:58
#25493
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi223848849884923869(Top 84%)9584(Top 78%)9584(Top 558%)
10K6.21 mi3.10 mi22935-5519118-2699118-26923401(Top 82%)9358(Top 77%)9358(Top 545%)
15K9.32 mi3.11 mi23339-4049315-1979315-19723869(Top 84%)9584(Top 78%)9584(Top 558%)
20K12.43 mi3.11 mi24346-10079888-5739888-57326094(Top 92%)10860(Top 89%)10860(Top 632%)
Half13.11 mi0.68 mi24350-49896-89896-824797(Top 87%)10164(Top 83%)10164(Top 592%)
25K15.53 mi2.42 mi24464-1149961-659961-6524729(Top 87%)10146(Top 83%)10146(Top 591%)
30K18.64 mi3.11 mi25155-69110369-40810369-40826994(Top 95%)11491(Top 94%)11491(Top 669%)
20M20.00 mi1.36 mi25257-10210443-7410443-7426095(Top 92%)11058(Top 90%)11058(Top 644%)
21M21.00 mi1.00 mi25312-5510478-3510478-3525724(Top 91%)10914(Top 89%)10914(Top 635%)
35K21.75 mi0.75 mi25321-910497-1910497-1925621(Top 90%)10908(Top 89%)10908(Top 635%)
23M23.00 mi1.25 mi25458-13710588-9110588-9126940(Top 95%)11575(Top 95%)11575(Top 674%)
24M24.00 mi1.00 mi25469-1110595-710595-725258(Top 89%)10757(Top 88%)10757(Top 626%)
40K24.85 mi0.85 mi25478-910616-2110616-2125569(Top 90%)10936(Top 89%)10936(Top 637%)
25.2M25.20 mi0.35 mi25486-810624-810624-825436(Top 90%)10907(Top 89%)10907(Top 635%)
Finish26.22 mi1.02 mi25493-710636-1210636-1225300(Top 89%)10801(Top 88%)10801(Top 629%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21story building
+97ft-345ft

Overall

23869

Females

9584

F40-44

9584

5K→10K

3.1 - 6.2 mi

Top 82%
×5story building
+79ft-138ft

Overall

23401

Females

9358

F40-44

9358

10K→15K

6.2 - 9.3 mi

Top 84%
×3story building
+67ft-78ft

Overall

23869

Females

9584

F40-44

9584

15K→20K

9.3 - 12.4 mi

Top 92%
×5story building
+106ft-86ft

Overall

26094

Females

10860

F40-44

10860

20K→Half

12.4 - 13.1 mi

Top 87%
×2story building
+19ft-37ft

Overall

24797

Females

10164

F40-44

10164

Half→25K

13.1 - 15.5 mi

Top 87%
×4story building
+66ft-88ft

Overall

24729

Females

10146

F40-44

10146

25K→30K

15.5 - 18.6 mi

Top 95%
×9story building
+181ft-148ft

Overall

26994

Females

11491

F40-44

11491

30K→20M

18.6 - 20.0 mi

Top 92%
×5story building
+64ft-50ft

Overall

26095

Females

11058

F40-44

11058

20M→21M

20.0 - 21.0 mi

Top 91%
×8story building
+106ft-24ft

Overall

25724

Females

10914

F40-44

10914

21M→35K

21.0 - 21.8 mi

Top 90%
×7story building
+17ft-86ft

Overall

25621

Females

10908

F40-44

10908

35K→23M

21.8 - 23.0 mi

Top 95%
×5story building
+23ft-63ft

Overall

26940

Females

11575

F40-44

11575

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

25258

Females

10757

F40-44

10757

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

25569

Females

10936

F40-44

10936

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

25436

Females

10907

F40-44

10907

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2story building
+22ft-21ft

Overall

25300

Females

10801

F40-44

10801

Passing Analysis

Category:
Athletes Passed
467
Passed By
3576
Net Change
-3109
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22384
5K → 10K78629-551#22384#22935
10K → 15K66470-404#22935#23339
15K → 20K101017-1007#23339#24346
20K → Half1923-4#24346#24350
Half → 25K81195-114#24350#24464
25K → 30K16707-691#24464#25155
30K → 20M25127-102#25155#25257
20M → 21M2378-55#25257#25312
21M → 35K2433-9#25312#25321
35K → 23M13150-137#25321#25458
23M → 24M4152-11#25458#25469
24M → 40K2938-9#25469#25478
40K → 25.2M917-8#25478#25486
25.2M → Finish3340-7#25486#25493
TOTALS4673576-3109
📊

Passing Visuals

Category:
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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