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BOSTON MARATHON 2025

Leyi Lin

Bib: 12766•M

DC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 38%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 41%
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:39/mi
23:47
↑ 97↓ 3451.5%
10K· 6.21 mi
7:34/mi
47:17
↑ 79↓ 1380.4%
15K· 9.32 mi
7:39/mi
1:11:02
↑ 67↓ 78
20K· 12.43 mi
7:44/mi
1:35:04
↑ 106↓ 860.1%
Half· 13.11 mi
7:18/mi
1:40:03
↑ 19↓ 370.5%
25K· 15.53 mi
7:31/mi
1:58:17
↑ 66↓ 880.2%
30K· 18.64 mi
7:40/mi
2:22:05
↑ 181↓ 1480.2%
20M
7:35/mi
2:32:23
↑ 64↓ 500.2%
21M
8:03/mi
2:40:26
↑ 106↓ 241.6%
35K· 21.75 mi
7:45/mi
2:46:14
↑ 17↓ 861.7%
23M
8:02/mi
2:56:18
↑ 23↓ 630.6%
24M
8:02/mi
3:04:20
↓ 821.3%
40K· 24.85 mi
8:35/mi
3:11:40
↓ 200.3%
25.2M
8:42/mi
3:14:40
↑ 13↓ 160.2%
Finish· 26.22 mi
7:51/mi
3:22:40
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:03
Pace7:38 /mi
2nd Half
Distance13.11 mi
Time1:42:37
Pace7:50 /mi
📊Positive Split: 2.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:2023:477:3923:47
7:39
-
10K
6.21 mi11:15:5047:177:3723:30
7:34
-0:05
15K
9.32 mi11:39:351:11:027:3723:45
7:39
+0:05
20K
12.43 mi12:03:371:35:047:3924:02
7:44
+0:05
Half
13.11 mi12:08:361:40:037:384:59
7:18
-0:26
25K
15.53 mi12:26:501:58:177:3718:14
7:31
+0:13
30K
18.64 mi12:50:382:22:057:3723:48
7:40
+0:09
20M
20.00 mi13:00:562:32:237:3710:18
7:35
-0:05
21M
21.00 mi13:08:592:40:267:388:03
8:03
+0:28
35K
21.75 mi13:14:472:46:147:395:48
7:45
-0:18
23M
23.00 mi13:24:512:56:187:4010:04
8:02
+0:17
24M
24.00 mi13:32:533:04:207:418:02
8:02
0:00
40K
24.85 mi13:40:133:11:407:437:20
8:35
+0:33
25.2M
25.20 mi13:43:133:14:407:433:00
8:42
+0:07
Finish
26.22 mi13:51:133:22:407:448:00
7:51
-0:51

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

7:18 /mi

Average Pace

7:44 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:11

82% of race

Time at Steady Pace

33:29

17% of race

Time at Slower Pace

3:00

1% of race

Average Pace: 7:44 /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 mi10:52:2023:477:3923:47
7:39
#13550
10K
6.21 mi11:15:5047:177:3723:30
7:34
#13111
15K
9.32 mi11:39:351:11:027:3723:45
7:39
#13037
20K
12.43 mi12:03:371:35:047:3924:02
7:44
#12919
Half
13.11 mi12:08:361:40:037:384:59
7:18
#12759
25K
15.53 mi12:26:501:58:177:3718:14
7:31
#12312
30K
18.64 mi12:50:382:22:057:3723:48
7:40
#11608
20M
20.00 mi13:00:562:32:237:3710:18
7:35
#11248
21M
21.00 mi13:08:592:40:267:388:03
8:03
#10989
35K
21.75 mi13:14:472:46:147:395:48
7:45
#10949
23M
23.00 mi13:24:512:56:187:4010:04
8:02
#10863
24M
24.00 mi13:32:533:04:207:418:02
8:02
#10868
40K
24.85 mi13:40:133:11:407:437:20
8:35
#10952
25.2M
25.20 mi13:43:133:14:407:433:00
8:42
#10920
Finish
26.22 mi13:51:133:22:407:448:00
7:51
#10931
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi135509881988112967(Top 46%)9498(Top 59%)9498(Top 398%)
10K6.21 mi3.10 mi13111+4399666+2159666+21512678(Top 45%)9451(Top 59%)9451(Top 396%)
15K9.32 mi3.11 mi13037+749591+759591+7512967(Top 46%)9498(Top 59%)9498(Top 398%)
20K12.43 mi3.11 mi12919+1189480+1119480+11112690(Top 45%)9272(Top 58%)9272(Top 389%)
Half13.11 mi0.68 mi12759+1609411+699411+6910013(Top 35%)8035(Top 50%)8035(Top 337%)
25K15.53 mi2.42 mi12312+4479197+2149197+21410134(Top 36%)7959(Top 49%)7959(Top 334%)
30K18.64 mi3.11 mi11608+7048790+4078790+4078907(Top 31%)7094(Top 44%)7094(Top 297%)
20M20.00 mi1.36 mi11248+3608585+2058585+2057548(Top 27%)6177(Top 38%)6177(Top 259%)
21M21.00 mi1.00 mi10989+2598421+1648421+1647649(Top 27%)6067(Top 38%)6067(Top 254%)
35K21.75 mi0.75 mi10949+408374+478374+4710438(Top 37%)7592(Top 47%)7592(Top 318%)
23M23.00 mi1.25 mi10863+868294+808294+8010309(Top 36%)7393(Top 46%)7393(Top 310%)
24M24.00 mi1.00 mi10868-58261+338261+3311467(Top 40%)7888(Top 49%)7888(Top 331%)
40K24.85 mi0.85 mi10952-848254+78254+713889(Top 49%)8938(Top 55%)8938(Top 375%)
25.2M25.20 mi0.35 mi10920+328226+288226+289960(Top 35%)6936(Top 43%)6936(Top 291%)
Finish26.22 mi1.02 mi10931-118197+298197+2911791(Top 42%)7929(Top 49%)7929(Top 332%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

12967

Males

9498

M45-49

9498

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

12678

Males

9451

M45-49

9451

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

12967

Males

9498

M45-49

9498

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

12690

Males

9272

M45-49

9272

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

10013

Males

8035

M45-49

8035

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

10134

Males

7959

M45-49

7959

25K→30K

15.5 - 18.6 mi

Top 31%
×9story building
+181ft-148ft

Overall

8907

Males

7094

M45-49

7094

30K→20M

18.6 - 20.0 mi

Top 27%
×5story building
+64ft-50ft

Overall

7548

Males

6177

M45-49

6177

20M→21M

20.0 - 21.0 mi

Top 27%
×8story building
+106ft-24ft

Overall

7649

Males

6067

M45-49

6067

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

10438

Males

7592

M45-49

7592

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

10309

Males

7393

M45-49

7393

23M→24M

23.0 - 24.0 mi

Top 40%
×6story building
+12ft-82ft

Overall

11467

Males

7888

M45-49

7888

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

13889

Males

8938

M45-49

8938

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9960

Males

6936

M45-49

6936

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11791

Males

7929

M45-49

7929

Passing Analysis

Category:
Athletes Passed
3470
Passed By
851
Net Change
+2619
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13550
5K → 10K544105+439#13550#13111
10K → 15K236162+74#13111#13037
15K → 20K267149+118#13037#12919
20K → Half1611+160#12919#12759
Half → 25K4547+447#12759#12312
25K → 30K7117+704#12312#11608
30K → 20M3633+360#11608#11248
20M → 21M27011+259#11248#10989
21M → 35K7232+40#10989#10949
35K → 23M15367+86#10949#10863
23M → 24M7378-5#10863#10868
24M → 40K53137-84#10868#10952
40K → 25.2M5422+32#10952#10920
25.2M → Finish5970-11#10920#10931
TOTALS3470851+2619
📊

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