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BOSTON MARATHON 2025

William Ng

Bib: 9420•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 19%
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
20:58
Rank: #5890
Start → 5K
20:58 | 6:45/mi
10K· 6.21 mi
41:35
Rank: #5291 (+599)
5K → 10K
20:37 | 6:38/mi
15K· 9.32 mi
1:02:32
Rank: #5337 (-46)
10K → 15K
20:57 | 6:45/mi
20K· 12.43 mi
1:23:47
Rank: #5401 (-64)
15K → 20K
21:15 | 6:50/mi
Half· 13.11 mi
1:28:23
Rank: #5403 (-2)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:45:06
Rank: #5413 (-10)
Half → 25K
16:43 | 6:54/mi
30K· 18.64 mi
2:07:22
Rank: #5447 (-34)
25K → 30K
22:16 | 7:10/mi
20M
2:17:22
Rank: #5519 (-72)
30K → 20M
10:00 | 7:22/mi
21M
2:25:16
Rank: #5565 (-46)
20M → 21M
7:54 | 7:54/mi
35K· 21.75 mi
2:30:25
Rank: #5505 (+60)
21M → 35K
5:09 | 6:53/mi
23M
2:39:39
Rank: #5452 (+53)
35K → 23M
9:14 | 7:22/mi
24M
2:46:52
Rank: #5426 (+26)
23M → 24M
7:13 | 7:13/mi
40K· 24.85 mi
2:53:19
Rank: #5420 (+6)
24M → 40K
6:27 | 7:33/mi
25.2M
2:56:14
Rank: #5426 (-6)
40K → 25.2M
2:55 | 8:27/mi
Finish· 26.22 mi
3:04:02
Rank: #5536 (-110)
25.2M → Finish
7:48 | 7:39/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:23
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:35:39
Pace7:18 /mi
📊Positive Split: 8.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:3820:586:4520:58
6:45
-
10K
6.21 mi11:07:1541:356:4220:37
6:38
-0:07
15K
9.32 mi11:28:121:02:326:4320:57
6:45
+0:07
20K
12.43 mi11:49:271:23:476:4521:15
6:50
+0:05
Half
13.11 mi11:54:031:28:236:454:36
6:45
-0:05
25K
15.53 mi12:10:461:45:066:4616:43
6:54
+0:09
30K
18.64 mi12:33:022:07:226:5022:16
7:10
+0:16
20M
20.00 mi12:43:022:17:226:5210:00
7:22
+0:12
21M
21.00 mi12:50:562:25:166:557:54
7:54
+0:32
35K
21.75 mi12:56:052:30:256:555:09
6:53
-1:01
23M
23.00 mi13:05:192:39:396:569:14
7:22
+0:29
24M
24.00 mi13:12:322:46:526:577:13
7:13
-0:09
40K
24.85 mi13:18:592:53:196:586:27
7:33
+0:20
25.2M
25.20 mi13:21:542:56:147:002:55
8:27
+0:54
Finish
26.22 mi13:29:423:04:027:017:48
7:39
-0:48

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

6:38 /mi

Average Pace

7:01 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:15

60% of race

Time at Steady Pace

48:43

26% of race

Time at Slower Pace

25:04

14% of race

Average Pace: 7:01 /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 mi10:46:3820:586:4520:58
6:45
#5890
10K
6.21 mi11:07:1541:356:4220:37
6:38
#5291
15K
9.32 mi11:28:121:02:326:4320:57
6:45
#5337
20K
12.43 mi11:49:271:23:476:4521:15
6:50
#5401
Half
13.11 mi11:54:031:28:236:454:36
6:45
#5403
25K
15.53 mi12:10:461:45:066:4616:43
6:54
#5413
30K
18.64 mi12:33:022:07:226:5022:16
7:10
#5447
20M
20.00 mi12:43:022:17:226:5210:00
7:22
#5519
21M
21.00 mi12:50:562:25:166:557:54
7:54
#5565
35K
21.75 mi12:56:052:30:256:555:09
6:53
#5505
23M
23.00 mi13:05:192:39:396:569:14
7:22
#5452
24M
24.00 mi13:12:322:46:526:577:13
7:13
#5426
40K
24.85 mi13:18:592:53:196:586:27
7:33
#5420
25.2M
25.20 mi13:21:542:56:147:002:55
8:27
#5426
Finish
26.22 mi13:29:423:04:027:017:48
7:39
#5536
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5890542554255510(Top 19%)5056(Top 31%)5056(Top 225%)
10K6.21 mi3.10 mi5291+5994910+5154910+5154759(Top 17%)4456(Top 28%)4456(Top 198%)
15K9.32 mi3.11 mi5337-464952-424952-425510(Top 19%)5056(Top 31%)5056(Top 225%)
20K12.43 mi3.11 mi5401-644992-404992-405692(Top 20%)5190(Top 32%)5190(Top 231%)
Half13.11 mi0.68 mi5403-24993-14993-15658(Top 20%)5178(Top 32%)5178(Top 230%)
25K15.53 mi2.42 mi5413-104984+94984+95638(Top 20%)5112(Top 32%)5112(Top 228%)
30K18.64 mi3.11 mi5447-344996-124996-125716(Top 20%)5106(Top 32%)5106(Top 227%)
20M20.00 mi1.36 mi5519-725046-505046-506130(Top 22%)5286(Top 33%)5286(Top 235%)
21M21.00 mi1.00 mi5565-465075-295075-296769(Top 24%)5540(Top 34%)5540(Top 247%)
35K21.75 mi0.75 mi5505+605015+605015+604650(Top 16%)4128(Top 26%)4128(Top 184%)
23M23.00 mi1.25 mi5452+534960+554960+555885(Top 21%)4899(Top 30%)4899(Top 218%)
24M24.00 mi1.00 mi5426+264927+334927+335919(Top 21%)4867(Top 30%)4867(Top 217%)
40K24.85 mi0.85 mi5420+64906+214906+217023(Top 25%)5441(Top 34%)5441(Top 242%)
25.2M25.20 mi0.35 mi5426-64902+44902+48471(Top 30%)6156(Top 38%)6156(Top 274%)
Finish26.22 mi1.02 mi5536-1104973-714973-7110299(Top 36%)7129(Top 44%)7129(Top 317%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5510

Males

5056

M40-44

5056

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4759

Males

4456

M40-44

4456

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5510

Males

5056

M40-44

5056

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5692

Males

5190

M40-44

5190

20K→Half

12.4 - 13.1 mi

Top 20%
×2stories
+19ft-37ft

Overall

5658

Males

5178

M40-44

5178

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5638

Males

5112

M40-44

5112

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5716

Males

5106

M40-44

5106

30K→20M

18.6 - 20.0 mi

Top 22%
×5stories
+64ft-50ft

Overall

6130

Males

5286

M40-44

5286

20M→21M

20.0 - 21.0 mi

Top 24%
×8stories
+106ft-24ft

Overall

6769

Males

5540

M40-44

5540

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4650

Males

4128

M40-44

4128

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5885

Males

4899

M40-44

4899

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

5919

Males

4867

M40-44

4867

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

7023

Males

5441

M40-44

5441

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

8471

Males

6156

M40-44

6156

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2stories
+22ft-21ft

Overall

10299

Males

7129

M40-44

7129

Passing Analysis

Category:
Athletes Passed
1574
Passed By
1220
Net Change
+354
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5890
5K → 10K62627+599#5890#5291
10K → 15K104150-46#5291#5337
15K → 20K96160-64#5337#5401
20K → Half2628-2#5401#5403
Half → 25K115125-10#5403#5413
25K → 30K165199-34#5413#5447
30K → 20M56128-72#5447#5519
20M → 21M4894-46#5519#5565
21M → 35K7717+60#5565#5505
35K → 23M10754+53#5505#5452
23M → 24M5933+26#5452#5426
24M → 40K5145+6#5426#5420
40K → 25.2M2329-6#5420#5426
25.2M → Finish21131-110#5426#5536
TOTALS15741220+354
📊

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