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BOSTON MARATHON 2025

Chungting Lin

Bib: 4155•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 31%
Gender (Male)
#0 / 16105
Top 44%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:43
Rank: #5179
Start → 5K
20:43 | 6:40/mi
10K· 6.21 mi
41:47
Rank: #5623 (-444)
5K → 10K
21:04 | 6:47/mi
15K· 9.32 mi
1:02:57
Rank: #5758 (-135)
10K → 15K
21:10 | 6:49/mi
20K· 12.43 mi
1:23:58
Rank: #5541 (+217)
15K → 20K
21:01 | 6:46/mi
Half· 13.11 mi
1:28:34
Rank: #5537 (+4)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:45:13
Rank: #5496 (+41)
Half → 25K
16:39 | 6:52/mi
30K· 18.64 mi
2:07:15
Rank: #5383 (+113)
25K → 30K
22:02 | 7:06/mi
20M
2:16:56
Rank: #5341 (+42)
30K → 20M
9:41 | 7:08/mi
21M
2:25:50
Rank: #5715 (-374)
20M → 21M
8:54 | 8:54/mi
35K· 21.75 mi
2:32:44
Rank: #6163 (-448)
21M → 35K
6:54 | 9:13/mi
23M
2:45:05
Rank: #6970 (-807)
35K → 23M
12:21 | 9:52/mi
24M
2:54:31
Rank: #7502 (-532)
23M → 24M
9:26 | 9:26/mi
40K· 24.85 mi
3:03:08
Rank: #8127 (-625)
24M → 40K
8:37 | 10:05/mi
25.2M
3:06:54
Rank: #8368 (-241)
40K → 25.2M
3:46 | 10:55/mi
Finish· 26.22 mi
3:16:02
Rank: #8869 (-501)
25.2M → Finish
9:08 | 8:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:34
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:47:28
Pace8:12 /mi
📊Positive Split: 21.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:1420:436:4020:43
6:40
-
10K
6.21 mi10:44:1841:476:4321:04
6:47
+0:07
15K
9.32 mi11:05:281:02:576:4521:10
6:49
+0:02
20K
12.43 mi11:26:291:23:586:4521:01
6:46
-0:03
Half
13.11 mi11:31:051:28:346:454:36
6:45
-0:01
25K
15.53 mi11:47:441:45:136:4616:39
6:52
+0:07
30K
18.64 mi12:09:462:07:156:5022:02
7:06
+0:14
20M
20.00 mi12:19:272:16:566:519:41
7:08
+0:02
21M
21.00 mi12:28:212:25:506:578:54
8:54
+1:46
35K
21.75 mi12:35:152:32:447:016:54
9:13
+0:19
23M
23.00 mi12:47:362:45:057:1112:21
9:52
+0:39
24M
24.00 mi12:57:022:54:317:169:26
9:26
-0:26
40K
24.85 mi13:05:393:03:087:228:37
10:05
+0:39
25.2M
25.20 mi13:09:253:06:547:253:46
10:55
+0:50
Finish
26.22 mi13:18:333:16:027:299:08
8:58
-1:57

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

6:40 /mi

Average Pace

7:29 /mi

Slowest Pace

10:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:16:56

70% of race

Time at Slower Pace

59:06

30% of race

Average Pace: 7:29 /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 mi10:23:1420:436:4020:43
6:40
#5179
10K
6.21 mi10:44:1841:476:4321:04
6:47
#5623
15K
9.32 mi11:05:281:02:576:4521:10
6:49
#5758
20K
12.43 mi11:26:291:23:586:4521:01
6:46
#5541
Half
13.11 mi11:31:051:28:346:454:36
6:45
#5537
25K
15.53 mi11:47:441:45:136:4616:39
6:52
#5496
30K
18.64 mi12:09:462:07:156:5022:02
7:06
#5383
20M
20.00 mi12:19:272:16:566:519:41
7:08
#5341
21M
21.00 mi12:28:212:25:506:578:54
8:54
#5715
35K
21.75 mi12:35:152:32:447:016:54
9:13
#6163
23M
23.00 mi12:47:362:45:057:1112:21
9:52
#6970
24M
24.00 mi12:57:022:54:317:169:26
9:26
#7502
40K
24.85 mi13:05:393:03:087:228:37
10:05
#8127
25.2M
25.20 mi13:09:253:06:547:253:46
10:55
#8368
Finish
26.22 mi13:18:333:16:027:299:08
8:58
#8869
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5179482748276213(Top 22%)5634(Top 35%)5634(Top 100%)
10K6.21 mi3.10 mi5623-4445197-3705197-3706191(Top 22%)5643(Top 35%)5643(Top 100%)
15K9.32 mi3.11 mi5758-1355297-1005297-1006213(Top 22%)5634(Top 35%)5634(Top 100%)
20K12.43 mi3.11 mi5541+2175106+1915106+1914966(Top 17%)4590(Top 29%)4590(Top 81%)
Half13.11 mi0.68 mi5537+45096+105096+105689(Top 20%)5209(Top 32%)5209(Top 92%)
25K15.53 mi2.42 mi5496+415051+455051+455426(Top 19%)4942(Top 31%)4942(Top 88%)
30K18.64 mi3.11 mi5383+1134938+1134938+1135274(Top 19%)4759(Top 30%)4759(Top 84%)
20M20.00 mi1.36 mi5341+424892+464892+464827(Top 17%)4353(Top 27%)4353(Top 77%)
21M21.00 mi1.00 mi5715-3745193-3015193-30112877(Top 45%)8777(Top 54%)8777(Top 156%)
35K21.75 mi0.75 mi6163-4485529-3365529-33619218(Top 68%)11594(Top 72%)11594(Top 205%)
23M23.00 mi1.25 mi6970-8076080-5516080-55119990(Top 70%)11885(Top 74%)11885(Top 211%)
24M24.00 mi1.00 mi7502-5326388-3086388-30819358(Top 68%)11561(Top 72%)11561(Top 205%)
40K24.85 mi0.85 mi8127-6256758-3706758-37020684(Top 73%)12124(Top 75%)12124(Top 215%)
25.2M25.20 mi0.35 mi8368-2416883-1256883-12520335(Top 72%)11935(Top 74%)11935(Top 212%)
Finish26.22 mi1.02 mi8869-5017132-2497132-24918812(Top 66%)11261(Top 70%)11261(Top 200%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21stories
+97ft-345ft

Overall

6213

Males

5634

M18-39

5634

5K→10K

3.1 - 6.2 mi

Top 22%
×5stories
+79ft-138ft

Overall

6191

Males

5643

M18-39

5643

10K→15K

6.2 - 9.3 mi

Top 22%
×3stories
+67ft-78ft

Overall

6213

Males

5634

M18-39

5634

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4966

Males

4590

M18-39

4590

20K→Half

12.4 - 13.1 mi

Top 20%
×2stories
+19ft-37ft

Overall

5689

Males

5209

M18-39

5209

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5426

Males

4942

M18-39

4942

25K→30K

15.5 - 18.6 mi

Top 19%
×9stories
+181ft-148ft

Overall

5274

Males

4759

M18-39

4759

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4827

Males

4353

M18-39

4353

20M→21M

20.0 - 21.0 mi

Top 45%
×8stories
+106ft-24ft

Overall

12877

Males

8777

M18-39

8777

21M→35K

21.0 - 21.8 mi

Top 68%
×7stories
+17ft-86ft

Overall

19218

Males

11594

M18-39

11594

35K→23M

21.8 - 23.0 mi

Top 70%
×5stories
+23ft-63ft

Overall

19990

Males

11885

M18-39

11885

23M→24M

23.0 - 24.0 mi

Top 68%
×6stories
+12ft-82ft

Overall

19358

Males

11561

M18-39

11561

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

20684

Males

12124

M18-39

12124

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

20335

Males

11935

M18-39

11935

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2stories
+22ft-21ft

Overall

18812

Males

11261

M18-39

11261

Passing Analysis

Category:
Athletes Passed
939
Passed By
4629
Net Change
-3690
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5179
5K → 10K58502-444#5179#5623
10K → 15K87222-135#5623#5758
15K → 20K25942+217#5758#5541
20K → Half2420+4#5541#5537
Half → 25K13897+41#5537#5496
25K → 30K216103+113#5496#5383
30K → 20M10159+42#5383#5341
20M → 21M14388-374#5341#5715
21M → 35K4452-448#5715#6163
35K → 23M10817-807#6163#6970
23M → 24M12544-532#6970#7502
24M → 40K6631-625#7502#8127
40K → 25.2M4245-241#8127#8368
25.2M → Finish6507-501#8368#8869
TOTALS9394629-3690
📊

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