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BOSTON MARATHON 2025

Tuan Nguyen

Bib: 9568•M

TX

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
26:08
Rank: #19371
Start → 5K
26:08 | 8:25/mi
10K· 6.21 mi
52:10
Rank: #19211 (+160)
5K → 10K
26:02 | 8:23/mi
15K· 9.32 mi
1:18:21
Rank: #19058 (+153)
10K → 15K
26:11 | 8:26/mi
20K· 12.43 mi
1:45:39
Rank: #19272 (-214)
15K → 20K
27:18 | 8:47/mi
Half· 13.11 mi
1:51:33
Rank: #19319 (-47)
20K → Half
5:54 | 8:39/mi
25K· 15.53 mi
2:13:20
Rank: #19406 (-87)
Half → 25K
21:47 | 8:59/mi
30K· 18.64 mi
2:42:41
Rank: #19475 (-69)
25K → 30K
29:21 | 9:27/mi
20M
2:55:57
Rank: #19547 (-72)
30K → 20M
13:16 | 9:46/mi
21M
3:06:25
Rank: #19585 (-38)
20M → 21M
10:28 | 10:28/mi
35K· 21.75 mi
3:13:28
Rank: #19618 (-33)
21M → 35K
7:03 | 9:25/mi
23M
3:25:59
Rank: #19681 (-63)
35K → 23M
12:31 | 10:00/mi
24M
3:36:01
Rank: #19802 (-121)
23M → 24M
10:02 | 10:02/mi
40K· 24.85 mi
3:44:18
Rank: #19793 (+9)
24M → 40K
8:17 | 9:41/mi
25.2M
3:48:15
Rank: #19846 (-53)
40K → 25.2M
3:57 | 11:27/mi
Finish· 26.22 mi
3:58:06
Rank: #19952 (-106)
25.2M → Finish
9:51 | 9:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:33
Pace8:31 /mi
2nd Half
Distance13.11 mi
Time2:06:33
Pace9:39 /mi
📊Positive Split: 13.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:4026:088:2526:08
8:25
-
10K
6.21 mi11:47:4252:108:2426:02
8:23
-0:02
15K
9.32 mi12:13:531:18:218:2426:11
8:26
+0:03
20K
12.43 mi12:41:111:45:398:3027:18
8:47
+0:21
Half
13.11 mi12:47:051:51:338:315:54
8:39
-0:08
25K
15.53 mi13:08:522:13:208:3521:47
8:59
+0:20
30K
18.64 mi13:38:132:42:418:4429:21
9:27
+0:28
20M
20.00 mi13:51:292:55:578:4813:16
9:46
+0:19
21M
21.00 mi14:01:573:06:258:5310:28
10:28
+0:42
35K
21.75 mi14:09:003:13:288:547:03
9:25
-1:03
23M
23.00 mi14:21:313:25:598:5712:31
10:00
+0:35
24M
24.00 mi14:31:333:36:019:0010:02
10:02
+0:02
40K
24.85 mi14:39:503:44:189:018:17
9:41
-0:21
25.2M
25.20 mi14:43:473:48:159:033:57
11:27
+1:46
Finish
26.22 mi14:53:383:58:069:059:51
9:40
-1:47

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

8:23 /mi

Average Pace

9:05 /mi

Slowest Pace

11:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:20

56% of race

Time at Steady Pace

1:07:48

28% of race

Time at Slower Pace

36:58

16% of race

Average Pace: 9:05 /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 mi11:21:4026:088:2526:08
8:25
#19371
10K
6.21 mi11:47:4252:108:2426:02
8:23
#19211
15K
9.32 mi12:13:531:18:218:2426:11
8:26
#19058
20K
12.43 mi12:41:111:45:398:3027:18
8:47
#19272
Half
13.11 mi12:47:051:51:338:315:54
8:39
#19319
25K
15.53 mi13:08:522:13:208:3521:47
8:59
#19406
30K
18.64 mi13:38:132:42:418:4429:21
9:27
#19475
20M
20.00 mi13:51:292:55:578:4813:16
9:46
#19547
21M
21.00 mi14:01:573:06:258:5310:28
10:28
#19585
35K
21.75 mi14:09:003:13:288:547:03
9:25
#19618
23M
23.00 mi14:21:313:25:598:5712:31
10:00
#19681
24M
24.00 mi14:31:333:36:019:0010:02
10:02
#19802
40K
24.85 mi14:39:503:44:189:018:17
9:41
#19793
25.2M
25.20 mi14:43:473:48:159:033:57
11:27
#19846
Finish
26.22 mi14:53:383:58:069:059:51
9:40
#19952
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi19371121901219018863(Top 66%)11992(Top 74%)11992(Top 601%)
10K6.21 mi3.10 mi19211+16012143+4712143+4719067(Top 67%)12090(Top 75%)12090(Top 606%)
15K9.32 mi3.11 mi19058+15312060+8312060+8318863(Top 66%)11992(Top 74%)11992(Top 601%)
20K12.43 mi3.11 mi19272-21412156-9612156-9619869(Top 70%)12402(Top 77%)12402(Top 621%)
Half13.11 mi0.68 mi19319-4712170-1412170-1420038(Top 71%)12479(Top 77%)12479(Top 625%)
25K15.53 mi2.42 mi19406-8712202-3212202-3219813(Top 70%)12334(Top 77%)12334(Top 618%)
30K18.64 mi3.11 mi19475-6912194+812194+819725(Top 69%)12162(Top 76%)12162(Top 609%)
20M20.00 mi1.36 mi19547-7212204-1012204-1020155(Top 71%)12214(Top 76%)12214(Top 612%)
21M21.00 mi1.00 mi19585-3812190+1412190+1419889(Top 70%)11989(Top 74%)11989(Top 601%)
35K21.75 mi0.75 mi19618-3312193-312193-320027(Top 71%)11981(Top 74%)11981(Top 600%)
23M23.00 mi1.25 mi19681-6312186+712186+720472(Top 72%)12139(Top 75%)12139(Top 608%)
24M24.00 mi1.00 mi19802-12112210-2412210-2421452(Top 76%)12563(Top 78%)12563(Top 629%)
40K24.85 mi0.85 mi19793+912188+2212188+2219419(Top 68%)11525(Top 72%)11525(Top 577%)
25.2M25.20 mi0.35 mi19846-5312210-2212210-2221902(Top 77%)12733(Top 79%)12733(Top 638%)
Finish26.22 mi1.02 mi19952-10612238-2812238-2821771(Top 77%)12664(Top 79%)12664(Top 634%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

18863

Males

11992

M50-54

11992

5K→10K

3.1 - 6.2 mi

Top 67%
×5stories
+79ft-138ft

Overall

19067

Males

12090

M50-54

12090

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

18863

Males

11992

M50-54

11992

15K→20K

9.3 - 12.4 mi

Top 70%
×5stories
+106ft-86ft

Overall

19869

Males

12402

M50-54

12402

20K→Half

12.4 - 13.1 mi

Top 71%
×2stories
+19ft-37ft

Overall

20038

Males

12479

M50-54

12479

Half→25K

13.1 - 15.5 mi

Top 70%
×4stories
+66ft-88ft

Overall

19813

Males

12334

M50-54

12334

25K→30K

15.5 - 18.6 mi

Top 69%
×9stories
+181ft-148ft

Overall

19725

Males

12162

M50-54

12162

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

20155

Males

12214

M50-54

12214

20M→21M

20.0 - 21.0 mi

Top 70%
×8stories
+106ft-24ft

Overall

19889

Males

11989

M50-54

11989

21M→35K

21.0 - 21.8 mi

Top 71%
×7stories
+17ft-86ft

Overall

20027

Males

11981

M50-54

11981

35K→23M

21.8 - 23.0 mi

Top 72%
×5stories
+23ft-63ft

Overall

20472

Males

12139

M50-54

12139

23M→24M

23.0 - 24.0 mi

Top 76%
×6stories
+12ft-82ft

Overall

21452

Males

12563

M50-54

12563

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19419

Males

11525

M50-54

11525

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

21902

Males

12733

M50-54

12733

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×2stories
+22ft-21ft

Overall

21771

Males

12664

M50-54

12664

Passing Analysis

Category:
Athletes Passed
1533
Passed By
2114
Net Change
-581
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19371
5K → 10K346186+160#19371#19211
10K → 15K280127+153#19211#19058
15K → 20K129343-214#19058#19272
20K → Half2471-47#19272#19319
Half → 25K142229-87#19319#19406
25K → 30K193262-69#19406#19475
30K → 20M81153-72#19475#19547
20M → 21M90128-38#19547#19585
21M → 35K3669-33#19585#19618
35K → 23M67130-63#19618#19681
23M → 24M38159-121#19681#19802
24M → 40K6556+9#19802#19793
40K → 25.2M1164-53#19793#19846
25.2M → Finish31137-106#19846#19952
TOTALS15332114-581
📊

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