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BOSTON MARATHON 2025

Kin Lam

Bib: 9377•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 20%
Gender (Male)
#0 / 16105
Top 31%
Masters (Masters Men)
#0 / 10463
Top 17%
Division (M40-44)
#0 / 2247
Top 41%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:17
Rank: #1917
Start → 5K
19:17 | 6:12/mi
10K· 6.21 mi
39:01
Rank: #2290 (-373)
5K → 10K
19:44 | 6:21/mi
15K· 9.32 mi
59:24
Rank: #2836 (-546)
10K → 15K
20:23 | 6:34/mi
20K· 12.43 mi
1:20:36
Rank: #3406 (-570)
15K → 20K
21:12 | 6:49/mi
Half· 13.11 mi
1:25:11
Rank: #3495 (-89)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:42:15
Rank: #3887 (-392)
Half → 25K
17:04 | 7:02/mi
30K· 18.64 mi
2:04:57
Rank: #4347 (-460)
25K → 30K
22:42 | 7:18/mi
20M
2:15:21
Rank: #4674 (-327)
30K → 20M
10:24 | 7:39/mi
21M
2:23:37
Rank: #4942 (-268)
20M → 21M
8:16 | 8:16/mi
35K· 21.75 mi
2:29:02
Rank: #4992 (-50)
21M → 35K
5:25 | 7:14/mi
23M
2:38:42
Rank: #5192 (-200)
35K → 23M
9:40 | 7:43/mi
24M
2:46:16
Rank: #5286 (-94)
23M → 24M
7:34 | 7:34/mi
40K· 24.85 mi
2:53:01
Rank: #5357 (-71)
24M → 40K
6:45 | 7:54/mi
25.2M
2:56:04
Rank: #5401 (-44)
40K → 25.2M
3:03 | 8:51/mi
Finish· 26.22 mi
3:04:25
Rank: #5618 (-217)
25.2M → Finish
8:21 | 8:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:11
Pace6:30 /mi
2nd Half
Distance13.11 mi
Time1:39:14
Pace7:34 /mi
📊Positive Split: 16.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:44:2519:176:1219:17
6:12
-
10K
6.21 mi11:04:0939:016:1719:44
6:21
+0:09
15K
9.32 mi11:24:3259:246:2220:23
6:34
+0:13
20K
12.43 mi11:45:441:20:366:2921:12
6:49
+0:15
Half
13.11 mi11:50:191:25:116:304:35
6:43
-0:06
25K
15.53 mi12:07:231:42:156:3517:04
7:02
+0:19
30K
18.64 mi12:30:052:04:576:4222:42
7:18
+0:16
20M
20.00 mi12:40:292:15:216:4610:24
7:39
+0:21
21M
21.00 mi12:48:452:23:376:508:16
8:16
+0:37
35K
21.75 mi12:54:102:29:026:515:25
7:14
-1:02
23M
23.00 mi13:03:502:38:426:549:40
7:43
+0:29
24M
24.00 mi13:11:242:46:166:567:34
7:34
-0:09
40K
24.85 mi13:18:092:53:016:586:45
7:54
+0:20
25.2M
25.20 mi13:21:122:56:046:593:03
8:51
+0:57
Finish
26.22 mi13:29:333:04:257:028:21
8:12
-0:39

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

6:12 /mi

Average Pace

7:02 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:25:11

46% of race

Time at Steady Pace

1:03:09

34% of race

Time at Slower Pace

36:05

20% of race

Average Pace: 7:02 /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 mi10:44:2519:176:1219:17
6:12
#1917
10K
6.21 mi11:04:0939:016:1719:44
6:21
#2290
15K
9.32 mi11:24:3259:246:2220:23
6:34
#2836
20K
12.43 mi11:45:441:20:366:2921:12
6:49
#3406
Half
13.11 mi11:50:191:25:116:304:35
6:43
#3495
25K
15.53 mi12:07:231:42:156:3517:04
7:02
#3887
30K
18.64 mi12:30:052:04:576:4222:42
7:18
#4347
20M
20.00 mi12:40:292:15:216:4610:24
7:39
#4674
21M
21.00 mi12:48:452:23:376:508:16
8:16
#4942
35K
21.75 mi12:54:102:29:026:515:25
7:14
#4992
23M
23.00 mi13:03:502:38:426:549:40
7:43
#5192
24M
24.00 mi13:11:242:46:166:567:34
7:34
#5286
40K
24.85 mi13:18:092:53:016:586:45
7:54
#5357
25.2M
25.20 mi13:21:122:56:046:593:03
8:51
#5401
Finish
26.22 mi13:29:333:04:257:028:21
8:12
#5618
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi1917182318233963(Top 14%)3735(Top 23%)3735(Top 166%)
10K6.21 mi3.10 mi2290-3732187-3642187-3642755(Top 10%)2625(Top 16%)2625(Top 117%)
15K9.32 mi3.11 mi2836-5462704-5172704-5173963(Top 14%)3735(Top 23%)3735(Top 166%)
20K12.43 mi3.11 mi3406-5703232-5283232-5285549(Top 20%)5066(Top 31%)5066(Top 225%)
Half13.11 mi0.68 mi3495-893312-803312-805480(Top 19%)5035(Top 31%)5035(Top 224%)
25K15.53 mi2.42 mi3887-3923663-3513663-3516564(Top 23%)5809(Top 36%)5809(Top 259%)
30K18.64 mi3.11 mi4347-4604066-4034066-4036487(Top 23%)5645(Top 35%)5645(Top 251%)
20M20.00 mi1.36 mi4674-3274334-2684334-2688026(Top 28%)6453(Top 40%)6453(Top 287%)
21M21.00 mi1.00 mi4942-2684555-2214555-2218976(Top 32%)6795(Top 42%)6795(Top 302%)
35K21.75 mi0.75 mi4992-504585-304585-306843(Top 24%)5602(Top 35%)5602(Top 249%)
23M23.00 mi1.25 mi5192-2004745-1604745-1608004(Top 28%)6160(Top 38%)6160(Top 274%)
24M24.00 mi1.00 mi5286-944812-674812-678131(Top 29%)6189(Top 38%)6189(Top 275%)
40K24.85 mi0.85 mi5357-714857-454857-459385(Top 33%)6725(Top 42%)6725(Top 299%)
25.2M25.20 mi0.35 mi5401-444881-244881-2410809(Top 38%)7362(Top 46%)7362(Top 328%)
Finish26.22 mi1.02 mi5618-2175034-1535034-15314185(Top 50%)9095(Top 56%)9095(Top 405%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3963

Males

3735

M40-44

3735

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2755

Males

2625

M40-44

2625

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3963

Males

3735

M40-44

3735

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5549

Males

5066

M40-44

5066

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5480

Males

5035

M40-44

5035

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6564

Males

5809

M40-44

5809

25K→30K

15.5 - 18.6 mi

Top 23%
×9stories
+181ft-148ft

Overall

6487

Males

5645

M40-44

5645

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

8026

Males

6453

M40-44

6453

20M→21M

20.0 - 21.0 mi

Top 32%
×8stories
+106ft-24ft

Overall

8976

Males

6795

M40-44

6795

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6843

Males

5602

M40-44

5602

35K→23M

21.8 - 23.0 mi

Top 28%
×5stories
+23ft-63ft

Overall

8004

Males

6160

M40-44

6160

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

8131

Males

6189

M40-44

6189

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9385

Males

6725

M40-44

6725

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10809

Males

7362

M40-44

7362

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

14185

Males

9095

M40-44

9095

Passing Analysis

Category:
Athletes Passed
306
Passed By
4007
Net Change
-3701
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1917
5K → 10K20393-373#1917#2290
10K → 15K8554-546#2290#2836
15K → 20K13583-570#2836#3406
20K → Half493-89#3406#3495
Half → 25K19411-392#3495#3887
25K → 30K42502-460#3887#4347
30K → 20M16343-327#4347#4674
20M → 21M20288-268#4674#4942
21M → 35K4191-50#4942#4992
35K → 23M41241-200#4992#5192
23M → 24M25119-94#5192#5286
24M → 40K33104-71#5286#5357
40K → 25.2M1357-44#5357#5401
25.2M → Finish11228-217#5401#5618
TOTALS3064007-3701
📊

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