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BOSTON MARATHON 2025

Sermwong Dhanasarnsilp

Bib: 29036•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:33
Rank: #25960
Start → 5K
31:33 | 10:09/mi
10K· 6.21 mi
1:02:20
Rank: #25517 (+443)
5K → 10K
30:47 | 9:54/mi
15K· 9.32 mi
1:34:08
Rank: #25533 (-16)
10K → 15K
31:48 | 10:14/mi
20K· 12.43 mi
2:08:20
Rank: #25654 (-121)
15K → 20K
34:12 | 11:00/mi
Half· 13.11 mi
2:15:39
Rank: #25687 (-33)
20K → Half
7:19 | 10:43/mi
25K· 15.53 mi
2:45:00
Rank: #25909 (-222)
Half → 25K
29:21 | 12:06/mi
30K· 18.64 mi
3:26:34
Rank: #26207 (-298)
25K → 30K
41:34 | 13:23/mi
20M
3:45:17
Rank: #26325 (-118)
30K → 20M
18:43 | 13:46/mi
21M
4:00:46
Rank: #26430 (-105)
20M → 21M
15:29 | 15:29/mi
35K· 21.75 mi
4:10:15
Rank: #26441 (-11)
21M → 35K
9:29 | 12:41/mi
23M
4:26:37
Rank: #26454 (-13)
35K → 23M
16:22 | 13:04/mi
24M
4:38:58
Rank: #26457 (-3)
23M → 24M
12:21 | 12:21/mi
40K· 24.85 mi
4:49:32
Rank: #26440 (+17)
24M → 40K
10:34 | 12:22/mi
25.2M
4:54:38
Rank: #26465 (-25)
40K → 25.2M
5:06 | 14:47/mi
Finish· 26.22 mi
5:06:23
Rank: #26466 (-1)
25.2M → Finish
11:45 | 11:32/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:15:39
Pace10:21 /mi
2nd Half
Distance13.11 mi
Time2:50:44
Pace13:01 /mi
📊Positive Split: 25.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:57:4131:3310:0931:33
10:09
-
10K
6.21 mi12:28:281:02:2010:0230:47
9:54
-0:15
15K
9.32 mi13:00:161:34:0810:0631:48
10:14
+0:20
20K
12.43 mi13:34:282:08:2010:2034:12
11:00
+0:46
Half
13.11 mi13:41:472:15:3910:217:19
10:43
-0:17
25K
15.53 mi14:11:082:45:0010:3729:21
12:06
+1:23
30K
18.64 mi14:52:423:26:3411:0541:34
13:23
+1:17
20M
20.00 mi15:11:253:45:1711:1618:43
13:46
+0:23
21M
21.00 mi15:26:544:00:4611:2815:29
15:29
+1:43
35K
21.75 mi15:36:234:10:1511:309:29
12:41
-2:48
23M
23.00 mi15:52:454:26:3711:3616:22
13:04
+0:23
24M
24.00 mi16:05:064:38:5811:3712:21
12:21
-0:43
40K
24.85 mi16:15:404:49:3211:3910:34
12:22
+0:01
25.2M
25.20 mi16:20:464:54:3811:425:06
14:47
+2:25
Finish
26.22 mi16:32:315:06:2311:4211:45
11:32
-3:15

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

9:54 /mi

Average Pace

11:42 /mi

Slowest Pace

15:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:24

48% of race

Time at Steady Pace

1:18:07

25% of race

Time at Slower Pace

1:20:52

26% of race

Average Pace: 11:41 /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 mi11:57:4131:3310:0931:33
10:09
#25960
10K
6.21 mi12:28:281:02:2010:0230:47
9:54
#25517
15K
9.32 mi13:00:161:34:0810:0631:48
10:14
#25533
20K
12.43 mi13:34:282:08:2010:2034:12
11:00
#25654
Half
13.11 mi13:41:472:15:3910:217:19
10:43
#25687
25K
15.53 mi14:11:082:45:0010:3729:21
12:06
#25909
30K
18.64 mi14:52:423:26:3411:0541:34
13:23
#26207
20M
20.00 mi15:11:253:45:1711:1618:43
13:46
#26325
21M
21.00 mi15:26:544:00:4611:2815:29
15:29
#26430
35K
21.75 mi15:36:234:10:1511:309:29
12:41
#26441
23M
23.00 mi15:52:454:26:3711:3616:22
13:04
#26454
24M
24.00 mi16:05:064:38:5811:3712:21
12:21
#26457
40K
24.85 mi16:15:404:49:3211:3910:34
12:22
#26440
25.2M
25.20 mi16:20:464:54:3811:425:06
14:47
#26465
Finish
26.22 mi16:32:315:06:2311:4211:45
11:32
#26466
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi25960151591515925483(Top 90%)14918(Top 93%)14918(Top 747%)
10K6.21 mi3.10 mi25517+44314944+21514944+21525113(Top 88%)14757(Top 92%)14757(Top 739%)
15K9.32 mi3.11 mi25533-1614955-1114955-1125483(Top 90%)14918(Top 93%)14918(Top 747%)
20K12.43 mi3.11 mi25654-12114997-4214997-4226013(Top 92%)15129(Top 94%)15129(Top 758%)
Half13.11 mi0.68 mi25687-3315013-1615013-1626137(Top 92%)15167(Top 94%)15167(Top 760%)
25K15.53 mi2.42 mi25909-22215098-8515098-8526542(Top 93%)15309(Top 95%)15309(Top 767%)
30K18.64 mi3.11 mi26207-29815201-10315201-10327034(Top 95%)15452(Top 96%)15452(Top 774%)
20M20.00 mi1.36 mi26325-11815240-3915240-3927128(Top 96%)15434(Top 96%)15434(Top 773%)
21M21.00 mi1.00 mi26430-10515277-3715277-3727521(Top 97%)15628(Top 97%)15628(Top 783%)
35K21.75 mi0.75 mi26441-1115272+515272+526659(Top 94%)15167(Top 94%)15167(Top 760%)
23M23.00 mi1.25 mi26454-1315268+415268+426465(Top 93%)15070(Top 94%)15070(Top 755%)
24M24.00 mi1.00 mi26457-315264+415264+426131(Top 92%)14872(Top 92%)14872(Top 745%)
40K24.85 mi0.85 mi26440+1715249+1515249+1525460(Top 90%)14502(Top 90%)14502(Top 727%)
25.2M25.20 mi0.35 mi26465-2515255-615255-626981(Top 95%)15259(Top 95%)15259(Top 764%)
Finish26.22 mi1.02 mi26466-115251+415251+426181(Top 92%)14878(Top 92%)14878(Top 745%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21stories
+97ft-345ft

Overall

25483

Males

14918

M50-54

14918

5K→10K

3.1 - 6.2 mi

Top 88%
×5stories
+79ft-138ft

Overall

25113

Males

14757

M50-54

14757

10K→15K

6.2 - 9.3 mi

Top 90%
×3stories
+67ft-78ft

Overall

25483

Males

14918

M50-54

14918

15K→20K

9.3 - 12.4 mi

Top 92%
×5stories
+106ft-86ft

Overall

26013

Males

15129

M50-54

15129

20K→Half

12.4 - 13.1 mi

Top 92%
×2stories
+19ft-37ft

Overall

26137

Males

15167

M50-54

15167

Half→25K

13.1 - 15.5 mi

Top 93%
×4stories
+66ft-88ft

Overall

26542

Males

15309

M50-54

15309

25K→30K

15.5 - 18.6 mi

Top 95%
×9stories
+181ft-148ft

Overall

27034

Males

15452

M50-54

15452

30K→20M

18.6 - 20.0 mi

Top 96%
×5stories
+64ft-50ft

Overall

27128

Males

15434

M50-54

15434

20M→21M

20.0 - 21.0 mi

Top 97%
×8stories
+106ft-24ft

Overall

27521

Males

15628

M50-54

15628

21M→35K

21.0 - 21.8 mi

Top 94%
×7stories
+17ft-86ft

Overall

26659

Males

15167

M50-54

15167

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

26465

Males

15070

M50-54

15070

23M→24M

23.0 - 24.0 mi

Top 92%
×6stories
+12ft-82ft

Overall

26131

Males

14872

M50-54

14872

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

25460

Males

14502

M50-54

14502

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

26981

Males

15259

M50-54

15259

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2stories
+22ft-21ft

Overall

26181

Males

14878

M50-54

14878

Passing Analysis

Category:
Athletes Passed
941
Passed By
1447
Net Change
-506
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25960
5K → 10K47532+443#25960#25517
10K → 15K119135-16#25517#25533
15K → 20K86207-121#25533#25654
20K → Half841-33#25654#25687
Half → 25K36258-222#25687#25909
25K → 30K35333-298#25909#26207
30K → 20M23141-118#26207#26325
20M → 21M16121-105#26325#26430
21M → 35K2536-11#26430#26441
35K → 23M2740-13#26441#26454
23M → 24M2528-3#26454#26457
24M → 40K3114+17#26457#26440
40K → 25.2M732-25#26440#26465
25.2M → Finish2829-1#26465#26466
TOTALS9411447-506
📊

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