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BOSTON MARATHON 2025

Ho Kwun Tsang

Bib: 14082•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
23:32
Rank: #12891
Start → 5K
23:32 | 7:34/mi
10K· 6.21 mi
47:14
Rank: #13055 (-164)
5K → 10K
23:42 | 7:38/mi
15K· 9.32 mi
1:11:14
Rank: #13249 (-194)
10K → 15K
24:00 | 7:43/mi
20K· 12.43 mi
1:36:07
Rank: #13657 (-408)
15K → 20K
24:53 | 8:01/mi
Half· 13.11 mi
1:42:10
Rank: #14192 (-535)
20K → Half
6:03 | 8:52/mi
25K· 15.53 mi
2:01:46
Rank: #14207 (-15)
Half → 25K
19:36 | 8:05/mi
30K· 18.64 mi
2:28:58
Rank: #14641 (-434)
25K → 30K
27:12 | 8:45/mi
20M
2:41:13
Rank: #14832 (-191)
30K → 20M
12:15 | 9:01/mi
21M
2:51:58
Rank: #15323 (-491)
20M → 21M
10:45 | 10:45/mi
35K· 21.75 mi
3:00:08
Rank: #15846 (-523)
21M → 35K
8:10 | 10:55/mi
23M
3:11:41
Rank: #15915 (-69)
35K → 23M
11:33 | 9:13/mi
24M
3:21:12
Rank: #16100 (-185)
23M → 24M
9:31 | 9:31/mi
40K· 24.85 mi
3:29:27
Rank: #16253 (-153)
24M → 40K
8:15 | 9:39/mi
25.2M
3:33:21
Rank: #16387 (-134)
40K → 25.2M
3:54 | 11:19/mi
Finish· 26.22 mi
3:42:41
Rank: #16541 (-154)
25.2M → Finish
9:20 | 9:10/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:10
Pace7:48 /mi
2nd Half
Distance13.11 mi
Time2:00:31
Pace9:12 /mi
📊Positive Split: 18.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1323:327:3423:32
7:34
-
10K
6.21 mi11:16:5547:147:3623:42
7:38
+0:04
15K
9.32 mi11:40:551:11:147:3924:00
7:43
+0:05
20K
12.43 mi12:05:481:36:077:4424:53
8:01
+0:18
Half
13.11 mi12:11:511:42:107:486:03
8:52
+0:51
25K
15.53 mi12:31:272:01:467:5019:36
8:05
-0:47
30K
18.64 mi12:58:392:28:587:5927:12
8:45
+0:40
20M
20.00 mi13:10:542:41:138:0412:15
9:01
+0:16
21M
21.00 mi13:21:392:51:588:1110:45
10:45
+1:44
35K
21.75 mi13:29:493:00:088:178:10
10:55
+0:10
23M
23.00 mi13:41:223:11:418:2011:33
9:13
-1:42
24M
24.00 mi13:50:533:21:128:239:31
9:31
+0:18
40K
24.85 mi13:59:083:29:278:268:15
9:39
+0:08
25.2M
25.20 mi14:03:023:33:218:283:54
11:19
+1:40
Finish
26.22 mi14:12:223:42:418:309:20
9:10
-2:09

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

7:34 /mi

Average Pace

8:30 /mi

Slowest Pace

11:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:43

52% of race

Time at Steady Pace

1:15:54

34% of race

Time at Slower Pace

31:04

14% of race

Average Pace: 8:30 /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 mi10:53:1323:327:3423:32
7:34
#12891
10K
6.21 mi11:16:5547:147:3623:42
7:38
#13055
15K
9.32 mi11:40:551:11:147:3924:00
7:43
#13249
20K
12.43 mi12:05:481:36:077:4424:53
8:01
#13657
Half
13.11 mi12:11:511:42:107:486:03
8:52
#14192
25K
15.53 mi12:31:272:01:467:5019:36
8:05
#14207
30K
18.64 mi12:58:392:28:587:5927:12
8:45
#14641
20M
20.00 mi13:10:542:41:138:0412:15
9:01
#14832
21M
21.00 mi13:21:392:51:588:1110:45
10:45
#15323
35K
21.75 mi13:29:493:00:088:178:10
10:55
#15846
23M
23.00 mi13:41:223:11:418:2011:33
9:13
#15915
24M
24.00 mi13:50:533:21:128:239:31
9:31
#16100
40K
24.85 mi13:59:083:29:278:268:15
9:39
#16253
25.2M
25.20 mi14:03:023:33:218:283:54
11:19
#16387
Finish
26.22 mi14:12:223:42:418:309:20
9:10
#16541
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi128919598959813734(Top 48%)9837(Top 61%)9837(Top 493%)
10K6.21 mi3.10 mi13055-1649646-489646-4813263(Top 47%)9692(Top 60%)9692(Top 486%)
15K9.32 mi3.11 mi13249-1949670-249670-2413734(Top 48%)9837(Top 61%)9837(Top 493%)
20K12.43 mi3.11 mi13657-4089806-1369806-13615006(Top 53%)10319(Top 64%)10319(Top 517%)
Half13.11 mi0.68 mi14192-53510033-22710033-22721177(Top 75%)12974(Top 81%)12974(Top 650%)
25K15.53 mi2.42 mi14207-1510003+3010003+3014521(Top 51%)9989(Top 62%)9989(Top 500%)
30K18.64 mi3.11 mi14641-43410132-12910132-12916323(Top 57%)10636(Top 66%)10636(Top 533%)
20M20.00 mi1.36 mi14832-19110189-5710189-5716842(Top 59%)10739(Top 67%)10739(Top 538%)
21M21.00 mi1.00 mi15323-49110376-18710376-18720701(Top 73%)12349(Top 77%)12349(Top 619%)
35K21.75 mi0.75 mi15846-52310569-19310569-19324018(Top 85%)13884(Top 86%)13884(Top 696%)
23M23.00 mi1.25 mi15915-6910550+1910550+1917432(Top 61%)10708(Top 66%)10708(Top 536%)
24M24.00 mi1.00 mi16100-18510622-7210622-7219662(Top 69%)11701(Top 73%)11701(Top 586%)
40K24.85 mi0.85 mi16253-15310666-4410666-4419252(Top 68%)11438(Top 71%)11438(Top 573%)
25.2M25.20 mi0.35 mi16387-13410709-4310709-4321500(Top 76%)12523(Top 78%)12523(Top 627%)
Finish26.22 mi1.02 mi16541-15410745-3610745-3619755(Top 70%)11687(Top 73%)11687(Top 586%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21stories
+97ft-345ft

Overall

13734

Males

9837

M50-54

9837

5K→10K

3.1 - 6.2 mi

Top 47%
×5stories
+79ft-138ft

Overall

13263

Males

9692

M50-54

9692

10K→15K

6.2 - 9.3 mi

Top 48%
×3stories
+67ft-78ft

Overall

13734

Males

9837

M50-54

9837

15K→20K

9.3 - 12.4 mi

Top 53%
×5stories
+106ft-86ft

Overall

15006

Males

10319

M50-54

10319

20K→Half

12.4 - 13.1 mi

Top 75%
×2stories
+19ft-37ft

Overall

21177

Males

12974

M50-54

12974

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

14521

Males

9989

M50-54

9989

25K→30K

15.5 - 18.6 mi

Top 57%
×9stories
+181ft-148ft

Overall

16323

Males

10636

M50-54

10636

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

16842

Males

10739

M50-54

10739

20M→21M

20.0 - 21.0 mi

Top 73%
×8stories
+106ft-24ft

Overall

20701

Males

12349

M50-54

12349

21M→35K

21.0 - 21.8 mi

Top 85%
×7stories
+17ft-86ft

Overall

24018

Males

13884

M50-54

13884

35K→23M

21.8 - 23.0 mi

Top 61%
×5stories
+23ft-63ft

Overall

17432

Males

10708

M50-54

10708

23M→24M

23.0 - 24.0 mi

Top 69%
×6stories
+12ft-82ft

Overall

19662

Males

11701

M50-54

11701

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19252

Males

11438

M50-54

11438

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

21500

Males

12523

M50-54

12523

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

19755

Males

11687

M50-54

11687

Passing Analysis

Category:
Athletes Passed
1058
Passed By
4708
Net Change
-3650
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12891
5K → 10K206370-164#12891#13055
10K → 15K135329-194#13055#13249
15K → 20K101509-408#13249#13657
20K → Half0535-535#13657#14192
Half → 25K159174-15#14192#14207
25K → 30K135569-434#14207#14641
30K → 20M83274-191#14641#14832
20M → 21M33524-491#14832#15323
21M → 35K9532-523#15323#15846
35K → 23M94163-69#15846#15915
23M → 24M26211-185#15915#16100
24M → 40K29182-153#16100#16253
40K → 25.2M6140-134#16253#16387
25.2M → Finish42196-154#16387#16541
TOTALS10584708-3650
📊

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