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BOSTON MARATHON 2025

Wai Ming Siu

Bib: 18573•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Top 23%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:56
Rank: #16774
Start → 5K
24:56 | 8:02/mi
10K· 6.21 mi
49:35
Rank: #16332 (+442)
5K → 10K
24:39 | 7:56/mi
15K· 9.32 mi
1:14:22
Rank: #16156 (+176)
10K → 15K
24:47 | 7:59/mi
20K· 12.43 mi
1:39:26
Rank: #15928 (+228)
15K → 20K
25:04 | 8:04/mi
Half· 13.11 mi
1:44:53
Rank: #15920 (+8)
20K → Half
5:27 | 7:59/mi
25K· 15.53 mi
2:04:45
Rank: #15801 (+119)
Half → 25K
19:52 | 8:12/mi
30K· 18.64 mi
2:31:09
Rank: #15563 (+238)
25K → 30K
26:24 | 8:30/mi
20M
2:42:51
Rank: #15438 (+125)
30K → 20M
11:42 | 8:37/mi
21M
2:51:56
Rank: #15307 (+131)
20M → 21M
9:05 | 9:05/mi
35K· 21.75 mi
2:58:10
Rank: #15232 (+75)
21M → 35K
6:14 | 8:20/mi
23M
3:08:33
Rank: #15001 (+231)
35K → 23M
10:23 | 8:18/mi
24M
3:16:42
Rank: #14855 (+146)
23M → 24M
8:09 | 8:09/mi
40K· 24.85 mi
3:23:46
Rank: #14729 (+126)
24M → 40K
7:04 | 8:16/mi
25.2M
3:26:52
Rank: #14655 (+74)
40K → 25.2M
3:06 | 8:59/mi
Finish· 26.22 mi
3:34:38
Rank: #14466 (+189)
25.2M → Finish
7:46 | 7:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:53
Pace8:00 /mi
2nd Half
Distance13.11 mi
Time1:49:45
Pace8:22 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2124:568:0224:56
8:02
-
10K
6.21 mi11:41:0049:357:5924:39
7:56
-0:06
15K
9.32 mi12:05:471:14:227:5924:47
7:59
+0:03
20K
12.43 mi12:30:511:39:268:0025:04
8:04
+0:05
Half
13.11 mi12:36:181:44:538:005:27
7:59
-0:05
25K
15.53 mi12:56:102:04:458:0219:52
8:12
+0:13
30K
18.64 mi13:22:342:31:098:0726:24
8:30
+0:18
20M
20.00 mi13:34:162:42:518:0911:42
8:37
+0:07
21M
21.00 mi13:43:212:51:568:119:05
9:05
+0:28
35K
21.75 mi13:49:352:58:108:126:14
8:20
-0:45
23M
23.00 mi13:59:583:08:338:1210:23
8:18
-0:02
24M
24.00 mi14:08:073:16:428:128:09
8:09
-0:09
40K
24.85 mi14:15:113:23:468:127:04
8:16
+0:07
25.2M
25.20 mi14:18:173:26:528:133:06
8:59
+0:43
Finish
26.22 mi14:26:033:34:388:127:46
7:37
-1:22

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

7:37 /mi

Average Pace

8:12 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:21

77% of race

Time at Steady Pace

41:12

19% of race

Time at Slower Pace

9:05

4% of race

Average Pace: 8:11 /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 mi11:16:2124:568:0224:56
8:02
#16774
10K
6.21 mi11:41:0049:357:5924:39
7:56
#16332
15K
9.32 mi12:05:471:14:227:5924:47
7:59
#16156
20K
12.43 mi12:30:511:39:268:0025:04
8:04
#15928
Half
13.11 mi12:36:181:44:538:005:27
7:59
#15920
25K
15.53 mi12:56:102:04:458:0219:52
8:12
#15801
30K
18.64 mi13:22:342:31:098:0726:24
8:30
#15563
20M
20.00 mi13:34:162:42:518:0911:42
8:37
#15438
21M
21.00 mi13:43:212:51:568:119:05
9:05
#15307
35K
21.75 mi13:49:352:58:108:126:14
8:20
#15232
23M
23.00 mi13:59:583:08:338:1210:23
8:18
#15001
24M
24.00 mi14:08:073:16:428:128:09
8:09
#14855
40K
24.85 mi14:15:113:23:468:127:04
8:16
#14729
25.2M
25.20 mi14:18:173:26:528:133:06
8:59
#14655
Finish
26.22 mi14:26:033:34:388:127:46
7:37
#14466
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi16774111041110415854(Top 56%)10737(Top 67%)10737(Top 853%)
10K6.21 mi3.10 mi16332+44210945+15910945+15915930(Top 56%)10800(Top 67%)10800(Top 858%)
15K9.32 mi3.11 mi16156+17610876+6910876+6915854(Top 56%)10737(Top 67%)10737(Top 853%)
20K12.43 mi3.11 mi15928+22810777+9910777+9915393(Top 54%)10492(Top 65%)10492(Top 833%)
Half13.11 mi0.68 mi15920+810770+710770+715738(Top 55%)10656(Top 66%)10656(Top 846%)
25K15.53 mi2.42 mi15801+11910699+7110699+7115259(Top 54%)10337(Top 64%)10337(Top 821%)
30K18.64 mi3.11 mi15563+23810541+15810541+15814720(Top 52%)9929(Top 62%)9929(Top 789%)
20M20.00 mi1.36 mi15438+12510449+9210449+9214477(Top 51%)9672(Top 60%)9672(Top 768%)
21M21.00 mi1.00 mi15307+13110367+8210367+8213978(Top 49%)9319(Top 58%)9319(Top 740%)
35K21.75 mi0.75 mi15232+7510319+4810319+4814441(Top 51%)9473(Top 59%)9473(Top 752%)
23M23.00 mi1.25 mi15001+23110191+12810191+12811998(Top 42%)8236(Top 51%)8236(Top 654%)
24M24.00 mi1.00 mi14855+14610091+10010091+10012237(Top 43%)8293(Top 51%)8293(Top 659%)
40K24.85 mi0.85 mi14729+12610006+8510006+8511954(Top 42%)8035(Top 50%)8035(Top 638%)
25.2M25.20 mi0.35 mi14655+749968+389968+3811732(Top 41%)7866(Top 49%)7866(Top 625%)
Finish26.22 mi1.02 mi14466+1899852+1169852+11610108(Top 36%)7045(Top 44%)7045(Top 560%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21stories
+97ft-345ft

Overall

15854

Males

10737

M60-64

10737

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

15930

Males

10800

M60-64

10800

10K→15K

6.2 - 9.3 mi

Top 56%
×3stories
+67ft-78ft

Overall

15854

Males

10737

M60-64

10737

15K→20K

9.3 - 12.4 mi

Top 54%
×5stories
+106ft-86ft

Overall

15393

Males

10492

M60-64

10492

20K→Half

12.4 - 13.1 mi

Top 55%
×2stories
+19ft-37ft

Overall

15738

Males

10656

M60-64

10656

Half→25K

13.1 - 15.5 mi

Top 54%
×4stories
+66ft-88ft

Overall

15259

Males

10337

M60-64

10337

25K→30K

15.5 - 18.6 mi

Top 52%
×9stories
+181ft-148ft

Overall

14720

Males

9929

M60-64

9929

30K→20M

18.6 - 20.0 mi

Top 51%
×5stories
+64ft-50ft

Overall

14477

Males

9672

M60-64

9672

20M→21M

20.0 - 21.0 mi

Top 49%
×8stories
+106ft-24ft

Overall

13978

Males

9319

M60-64

9319

21M→35K

21.0 - 21.8 mi

Top 51%
×7stories
+17ft-86ft

Overall

14441

Males

9473

M60-64

9473

35K→23M

21.8 - 23.0 mi

Top 42%
×5stories
+23ft-63ft

Overall

11998

Males

8236

M60-64

8236

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

12237

Males

8293

M60-64

8293

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11954

Males

8035

M60-64

8035

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

11732

Males

7866

M60-64

7866

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2stories
+22ft-21ft

Overall

10108

Males

7045

M60-64

7045

Passing Analysis

Category:
Athletes Passed
3062
Passed By
754
Net Change
+2308
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16774
5K → 10K561119+442#16774#16332
10K → 15K300124+176#16332#16156
15K → 20K31688+228#16156#15928
20K → Half3628+8#15928#15920
Half → 25K228109+119#15920#15801
25K → 30K346108+238#15801#15563
30K → 20M17550+125#15563#15438
20M → 21M16736+131#15438#15307
21M → 35K10631+75#15307#15232
35K → 23M24413+231#15232#15001
23M → 24M16317+146#15001#14855
24M → 40K13913+126#14855#14729
40K → 25.2M839+74#14729#14655
25.2M → Finish1989+189#14655#14466
TOTALS3062754+2308
📊

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