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BOSTON MARATHON 2025

Yu-Chun Lin

Bib: 6381•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 25%
Gender (Male)
#0 / 16105
Top 37%
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
19:55
Rank: #3203
Start → 5K
19:55 | 6:25/mi
10K· 6.21 mi
40:07
Rank: #3451 (-248)
5K → 10K
20:12 | 6:30/mi
15K· 9.32 mi
1:00:42
Rank: #3776 (-325)
10K → 15K
20:35 | 6:38/mi
20K· 12.43 mi
1:22:07
Rank: #4233 (-457)
15K → 20K
21:25 | 6:54/mi
Half· 13.11 mi
1:26:47
Rank: #4332 (-99)
20K → Half
4:40 | 6:50/mi
25K· 15.53 mi
1:44:14
Rank: #4891 (-559)
Half → 25K
17:27 | 7:12/mi
30K· 18.64 mi
2:08:06
Rank: #5758 (-867)
25K → 30K
23:52 | 7:41/mi
20M
2:19:04
Rank: #6081 (-323)
30K → 20M
10:58 | 8:04/mi
21M
2:27:53
Rank: #6335 (-254)
20M → 21M
8:49 | 8:49/mi
35K· 21.75 mi
2:33:37
Rank: #6393 (-58)
21M → 35K
5:44 | 7:40/mi
23M
2:43:43
Rank: #6518 (-125)
35K → 23M
10:06 | 8:04/mi
24M
2:51:36
Rank: #6622 (-104)
23M → 24M
7:53 | 7:53/mi
40K· 24.85 mi
2:58:32
Rank: #6749 (-127)
24M → 40K
6:56 | 8:07/mi
25.2M
3:01:47
Rank: #6850 (-101)
40K → 25.2M
3:15 | 9:25/mi
Finish· 26.22 mi
3:10:01
Rank: #7067 (-217)
25.2M → Finish
8:14 | 8:05/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:47
Pace6:37 /mi
2nd Half
Distance13.11 mi
Time1:43:14
Pace7:52 /mi
📊Positive Split: 19.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:1319:556:2519:55
6:25
-
10K
6.21 mi10:45:2540:076:2720:12
6:30
+0:05
15K
9.32 mi11:06:001:00:426:3120:35
6:38
+0:08
20K
12.43 mi11:27:251:22:076:3621:25
6:54
+0:16
Half
13.11 mi11:32:051:26:476:374:40
6:50
-0:04
25K
15.53 mi11:49:321:44:146:4317:27
7:12
+0:22
30K
18.64 mi12:13:242:08:066:5223:52
7:41
+0:29
20M
20.00 mi12:24:222:19:046:5710:58
8:04
+0:23
21M
21.00 mi12:33:112:27:537:038:49
8:49
+0:45
35K
21.75 mi12:38:552:33:377:045:44
7:40
-1:09
23M
23.00 mi12:49:012:43:437:0710:06
8:04
+0:24
24M
24.00 mi12:56:542:51:367:097:53
7:53
-0:11
40K
24.85 mi13:03:502:58:327:116:56
8:07
+0:14
25.2M
25.20 mi13:07:053:01:477:133:15
9:25
+1:18
Finish
26.22 mi13:15:193:10:017:158:14
8:05
-1:20

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

6:25 /mi

Average Pace

7:15 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:14

55% of race

Time at Steady Pace

1:06:47

35% of race

Time at Slower Pace

19:00

10% of race

Average Pace: 7:15 /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 mi10:25:1319:556:2519:55
6:25
#3203
10K
6.21 mi10:45:2540:076:2720:12
6:30
#3451
15K
9.32 mi11:06:001:00:426:3120:35
6:38
#3776
20K
12.43 mi11:27:251:22:076:3621:25
6:54
#4233
Half
13.11 mi11:32:051:26:476:374:40
6:50
#4332
25K
15.53 mi11:49:321:44:146:4317:27
7:12
#4891
30K
18.64 mi12:13:242:08:066:5223:52
7:41
#5758
20M
20.00 mi12:24:222:19:046:5710:58
8:04
#6081
21M
21.00 mi12:33:112:27:537:038:49
8:49
#6335
35K
21.75 mi12:38:552:33:377:045:44
7:40
#6393
23M
23.00 mi12:49:012:43:437:0710:06
8:04
#6518
24M
24.00 mi12:56:542:51:367:097:53
7:53
#6622
40K
24.85 mi13:03:502:58:327:116:56
8:07
#6749
25.2M
25.20 mi13:07:053:01:477:133:15
9:25
#6850
Finish
26.22 mi13:15:193:10:017:158:14
8:05
#7067
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3203304330434449(Top 16%)4170(Top 26%)4170(Top 74%)
10K6.21 mi3.10 mi3451-2483277-2343277-2343734(Top 13%)3523(Top 22%)3523(Top 62%)
15K9.32 mi3.11 mi3776-3253568-2913568-2914449(Top 16%)4170(Top 26%)4170(Top 74%)
20K12.43 mi3.11 mi4233-4573981-4133981-4136131(Top 22%)5533(Top 34%)5533(Top 98%)
Half13.11 mi0.68 mi4332-994065-844065-846443(Top 23%)5783(Top 36%)5783(Top 102%)
25K15.53 mi2.42 mi4891-5594544-4794544-4797562(Top 27%)6478(Top 40%)6478(Top 115%)
30K18.64 mi3.11 mi5758-8675242-6985242-6989056(Top 32%)7164(Top 44%)7164(Top 127%)
20M20.00 mi1.36 mi6081-3235485-2435485-24310866(Top 38%)7959(Top 49%)7959(Top 141%)
21M21.00 mi1.00 mi6335-2545672-1875672-18712350(Top 43%)8523(Top 53%)8523(Top 151%)
35K21.75 mi0.75 mi6393-585696-245696-249730(Top 34%)7208(Top 45%)7208(Top 128%)
23M23.00 mi1.25 mi6518-1255758-625758-6210474(Top 37%)7454(Top 46%)7454(Top 132%)
24M24.00 mi1.00 mi6622-1045806-485806-4810397(Top 37%)7364(Top 46%)7364(Top 131%)
40K24.85 mi0.85 mi6749-1275866-605866-6010863(Top 38%)7473(Top 46%)7473(Top 132%)
25.2M25.20 mi0.35 mi6850-1015931-655931-6514038(Top 49%)8923(Top 55%)8923(Top 158%)
Finish26.22 mi1.02 mi7067-2176036-1056036-10513385(Top 47%)8693(Top 54%)8693(Top 154%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4449

Males

4170

M18-39

4170

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3734

Males

3523

M18-39

3523

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4449

Males

4170

M18-39

4170

15K→20K

9.3 - 12.4 mi

Top 22%
×5stories
+106ft-86ft

Overall

6131

Males

5533

M18-39

5533

20K→Half

12.4 - 13.1 mi

Top 23%
×2stories
+19ft-37ft

Overall

6443

Males

5783

M18-39

5783

Half→25K

13.1 - 15.5 mi

Top 27%
×4stories
+66ft-88ft

Overall

7562

Males

6478

M18-39

6478

25K→30K

15.5 - 18.6 mi

Top 32%
×9stories
+181ft-148ft

Overall

9056

Males

7164

M18-39

7164

30K→20M

18.6 - 20.0 mi

Top 38%
×5stories
+64ft-50ft

Overall

10866

Males

7959

M18-39

7959

20M→21M

20.0 - 21.0 mi

Top 43%
×8stories
+106ft-24ft

Overall

12350

Males

8523

M18-39

8523

21M→35K

21.0 - 21.8 mi

Top 34%
×7stories
+17ft-86ft

Overall

9730

Males

7208

M18-39

7208

35K→23M

21.8 - 23.0 mi

Top 37%
×5stories
+23ft-63ft

Overall

10474

Males

7454

M18-39

7454

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

10397

Males

7364

M18-39

7364

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10863

Males

7473

M18-39

7473

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

14038

Males

8923

M18-39

8923

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2stories
+22ft-21ft

Overall

13385

Males

8693

M18-39

8693

Passing Analysis

Category:
Athletes Passed
403
Passed By
4267
Net Change
-3864
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3203
5K → 10K50298-248#3203#3451
10K → 15K30355-325#3451#3776
15K → 20K21478-457#3776#4233
20K → Half5104-99#4233#4332
Half → 25K29588-559#4332#4891
25K → 30K50917-867#4891#5758
30K → 20M13336-323#5758#6081
20M → 21M20274-254#6081#6335
21M → 35K2886-58#6335#6393
35K → 23M56181-125#6393#6518
23M → 24M36140-104#6518#6622
24M → 40K35162-127#6622#6749
40K → 25.2M9110-101#6749#6850
25.2M → Finish21238-217#6850#7067
TOTALS4034267-3864
📊

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