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BOSTON MARATHON 2025

Ngai Kwan

Bib: 11966•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 33%
Gender (Male)
#0 / 16105
Top 46%
Masters (Masters Men)
#0 / 10463
Top 34%
Division (M45-49)
#0 / 2386
Top 49%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:37
Rank: #7489
Start → 5K
21:37 | 6:57/mi
10K· 6.21 mi
43:16
Rank: #7614 (-125)
5K → 10K
21:39 | 6:58/mi
15K· 9.32 mi
1:05:12
Rank: #7725 (-111)
10K → 15K
21:56 | 7:04/mi
20K· 12.43 mi
1:27:56
Rank: #8006 (-281)
15K → 20K
22:44 | 7:19/mi
Half· 13.11 mi
1:32:49
Rank: #8027 (-21)
20K → Half
4:53 | 7:09/mi
25K· 15.53 mi
1:50:41
Rank: #8105 (-78)
Half → 25K
17:52 | 7:22/mi
30K· 18.64 mi
2:14:36
Rank: #8187 (-82)
25K → 30K
23:55 | 7:42/mi
20M
2:25:12
Rank: #8219 (-32)
30K → 20M
10:36 | 7:48/mi
21M
2:33:50
Rank: #8343 (-124)
20M → 21M
8:38 | 8:38/mi
35K· 21.75 mi
2:39:26
Rank: #8318 (+25)
21M → 35K
5:36 | 7:29/mi
23M
2:49:28
Rank: #8362 (-44)
35K → 23M
10:02 | 8:01/mi
24M
2:57:39
Rank: #8544 (-182)
23M → 24M
8:11 | 8:11/mi
40K· 24.85 mi
3:05:09
Rank: #8802 (-258)
24M → 40K
7:30 | 8:46/mi
25.2M
3:08:38
Rank: #8971 (-169)
40K → 25.2M
3:29 | 10:06/mi
Finish· 26.22 mi
3:17:22
Rank: #9319 (-348)
25.2M → Finish
8:44 | 8:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:49
Pace7:05 /mi
2nd Half
Distance13.11 mi
Time1:44:33
Pace7:59 /mi
📊Positive Split: 12.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:4821:376:5721:37
6:57
-
10K
6.21 mi11:10:2743:166:5821:39
6:58
+0:01
15K
9.32 mi11:32:231:05:127:0021:56
7:04
+0:06
20K
12.43 mi11:55:071:27:567:0522:44
7:19
+0:15
Half
13.11 mi12:00:001:32:497:054:53
7:09
-0:10
25K
15.53 mi12:17:521:50:417:0817:52
7:22
+0:13
30K
18.64 mi12:41:472:14:367:1323:55
7:42
+0:20
20M
20.00 mi12:52:232:25:127:1610:36
7:48
+0:06
21M
21.00 mi13:01:012:33:507:208:38
8:38
+0:50
35K
21.75 mi13:06:372:39:267:205:36
7:29
-1:09
23M
23.00 mi13:16:392:49:287:2210:02
8:01
+0:32
24M
24.00 mi13:24:502:57:397:248:11
8:11
+0:10
40K
24.85 mi13:32:203:05:097:277:30
8:46
+0:35
25.2M
25.20 mi13:35:493:08:387:293:29
10:06
+1:20
Finish
26.22 mi13:44:333:17:227:328:44
8:34
-1:32

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

6:57 /mi

Average Pace

7:32 /mi

Slowest Pace

10:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:10:05

36% of race

Time at Steady Pace

1:30:45

46% of race

Time at Slower Pace

36:32

19% of race

Average Pace: 7:32 /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 mi10:48:4821:376:5721:37
6:57
#7489
10K
6.21 mi11:10:2743:166:5821:39
6:58
#7614
15K
9.32 mi11:32:231:05:127:0021:56
7:04
#7725
20K
12.43 mi11:55:071:27:567:0522:44
7:19
#8006
Half
13.11 mi12:00:001:32:497:054:53
7:09
#8027
25K
15.53 mi12:17:521:50:417:0817:52
7:22
#8105
30K
18.64 mi12:41:472:14:367:1323:55
7:42
#8187
20M
20.00 mi12:52:232:25:127:1610:36
7:48
#8219
21M
21.00 mi13:01:012:33:507:208:38
8:38
#8343
35K
21.75 mi13:06:372:39:267:205:36
7:29
#8318
23M
23.00 mi13:16:392:49:287:2210:02
8:01
#8362
24M
24.00 mi13:24:502:57:397:248:11
8:11
#8544
40K
24.85 mi13:32:203:05:097:277:30
8:46
#8802
25.2M
25.20 mi13:35:493:08:387:293:29
10:06
#8971
Finish
26.22 mi13:44:333:17:227:328:44
8:34
#9319
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi7489666466648036(Top 28%)6966(Top 43%)6966(Top 292%)
10K6.21 mi3.10 mi7614-1256732-686732-687717(Top 27%)6790(Top 42%)6790(Top 285%)
15K9.32 mi3.11 mi7725-1116798-666798-668036(Top 28%)6966(Top 43%)6966(Top 292%)
20K12.43 mi3.11 mi8006-2816957-1596957-1599176(Top 32%)7548(Top 47%)7548(Top 316%)
Half13.11 mi0.68 mi8027-216973-166973-168719(Top 31%)7331(Top 46%)7331(Top 307%)
25K15.53 mi2.42 mi8105-786990-176990-178886(Top 31%)7275(Top 45%)7275(Top 305%)
30K18.64 mi3.11 mi8187-826983+76983+79177(Top 32%)7239(Top 45%)7239(Top 303%)
20M20.00 mi1.36 mi8219-326981+26981+29018(Top 32%)7005(Top 43%)7005(Top 294%)
21M21.00 mi1.00 mi8343-1247020-397020-3911261(Top 40%)8005(Top 50%)8005(Top 335%)
35K21.75 mi0.75 mi8318+256983+376983+378502(Top 30%)6594(Top 41%)6594(Top 276%)
23M23.00 mi1.25 mi8362-446964+196964+1910093(Top 36%)7278(Top 45%)7278(Top 305%)
24M24.00 mi1.00 mi8544-1827041-777041-7712424(Top 44%)8375(Top 52%)8375(Top 351%)
40K24.85 mi0.85 mi8802-2587147-1067147-10614985(Top 53%)9428(Top 59%)9428(Top 395%)
25.2M25.20 mi0.35 mi8971-1697234-877234-8717382(Top 61%)10522(Top 65%)10522(Top 441%)
Finish26.22 mi1.02 mi9319-3487393-1597393-15916631(Top 59%)10205(Top 63%)10205(Top 428%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

8036

Males

6966

M45-49

6966

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

7717

Males

6790

M45-49

6790

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

8036

Males

6966

M45-49

6966

15K→20K

9.3 - 12.4 mi

Top 32%
×5stories
+106ft-86ft

Overall

9176

Males

7548

M45-49

7548

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8719

Males

7331

M45-49

7331

Half→25K

13.1 - 15.5 mi

Top 31%
×4stories
+66ft-88ft

Overall

8886

Males

7275

M45-49

7275

25K→30K

15.5 - 18.6 mi

Top 32%
×9stories
+181ft-148ft

Overall

9177

Males

7239

M45-49

7239

30K→20M

18.6 - 20.0 mi

Top 32%
×5stories
+64ft-50ft

Overall

9018

Males

7005

M45-49

7005

20M→21M

20.0 - 21.0 mi

Top 40%
×8stories
+106ft-24ft

Overall

11261

Males

8005

M45-49

8005

21M→35K

21.0 - 21.8 mi

Top 30%
×7stories
+17ft-86ft

Overall

8502

Males

6594

M45-49

6594

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

10093

Males

7278

M45-49

7278

23M→24M

23.0 - 24.0 mi

Top 44%
×6stories
+12ft-82ft

Overall

12424

Males

8375

M45-49

8375

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

14985

Males

9428

M45-49

9428

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

17382

Males

10522

M45-49

10522

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2stories
+22ft-21ft

Overall

16631

Males

10205

M45-49

10205

Passing Analysis

Category:
Athletes Passed
1013
Passed By
2843
Net Change
-1830
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7489
5K → 10K150275-125#7489#7614
10K → 15K94205-111#7614#7725
15K → 20K64345-281#7725#8006
20K → Half2243-21#8006#8027
Half → 25K108186-78#8027#8105
25K → 30K162244-82#8105#8187
30K → 20M99131-32#8187#8219
20M → 21M55179-124#8219#8343
21M → 35K7348+25#8343#8318
35K → 23M98142-44#8318#8362
23M → 24M31213-182#8362#8544
24M → 40K34292-258#8544#8802
40K → 25.2M9178-169#8802#8971
25.2M → Finish14362-348#8971#9319
TOTALS10132843-1830
📊

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