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BOSTON MARATHON 2025

Kwong Kui Leung

Bib: 7147•M

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:46
Rank: #5319
Start → 5K
20:46 | 6:41/mi
10K· 6.21 mi
41:42
Rank: #5484 (-165)
5K → 10K
20:56 | 6:44/mi
15K· 9.32 mi
1:03:45
Rank: #6573 (-1089)
10K → 15K
22:03 | 7:06/mi
20K· 12.43 mi
1:27:21
Rank: #7688 (-1115)
15K → 20K
23:36 | 7:36/mi
Half· 13.11 mi
1:32:32
Rank: #7878 (-190)
20K → Half
5:11 | 7:36/mi
25K· 15.53 mi
1:54:01
Rank: #9904 (-2026)
Half → 25K
21:29 | 8:52/mi
30K· 18.64 mi
2:21:33
Rank: #11383 (-1479)
25K → 30K
27:32 | 8:52/mi
20M
2:35:29
Rank: #12507 (-1124)
30K → 20M
13:56 | 10:15/mi
21M
2:46:53
Rank: #13461 (-954)
20M → 21M
11:24 | 11:24/mi
35K· 21.75 mi
2:55:09
Rank: #14226 (-765)
21M → 35K
8:16 | 11:02/mi
23M
3:08:58
Rank: #15145 (-919)
35K → 23M
13:49 | 11:02/mi
24M
3:19:16
Rank: #15594 (-449)
23M → 24M
10:18 | 10:18/mi
40K· 24.85 mi
3:27:45
Rank: #15809 (-215)
24M → 40K
8:29 | 9:56/mi
25.2M
3:31:11
Rank: #15813 (-4)
40K → 25.2M
3:26 | 9:56/mi
Finish· 26.22 mi
3:39:31
Rank: #15747 (+66)
25.2M → Finish
8:20 | 8:11/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:32
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time2:06:59
Pace9:41 /mi
📊Positive Split: 37.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:1920:466:4120:46
6:41
-
10K
6.21 mi10:48:1541:426:4320:56
6:44
+0:03
15K
9.32 mi11:10:181:03:456:5022:03
7:06
+0:22
20K
12.43 mi11:33:541:27:217:0223:36
7:36
+0:30
Half
13.11 mi11:39:051:32:327:045:11
7:36
0:00
25K
15.53 mi12:00:341:54:017:2021:29
8:52
+1:16
30K
18.64 mi12:28:062:21:337:3627:32
8:52
0:00
20M
20.00 mi12:42:022:35:297:4613:56
10:15
+1:23
21M
21.00 mi12:53:262:46:537:5711:24
11:24
+1:09
35K
21.75 mi13:01:422:55:098:038:16
11:02
-0:22
23M
23.00 mi13:15:313:08:588:1313:49
11:02
0:00
24M
24.00 mi13:25:493:19:168:1810:18
10:18
-0:44
40K
24.85 mi13:34:183:27:458:228:29
9:56
-0:22
25.2M
25.20 mi13:37:443:31:118:233:26
9:56
0:00
Finish
26.22 mi13:46:043:39:318:238:20
8:11
-1:45

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

6:41 /mi

Average Pace

8:23 /mi

Slowest Pace

11:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:32

42% of race

Time at Steady Pace

57:21

26% of race

Time at Slower Pace

1:09:38

32% of race

Average Pace: 8:22 /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 mi10:27:1920:466:4120:46
6:41
#5319
10K
6.21 mi10:48:1541:426:4320:56
6:44
#5484
15K
9.32 mi11:10:181:03:456:5022:03
7:06
#6573
20K
12.43 mi11:33:541:27:217:0223:36
7:36
#7688
Half
13.11 mi11:39:051:32:327:045:11
7:36
#7878
25K
15.53 mi12:00:341:54:017:2021:29
8:52
#9904
30K
18.64 mi12:28:062:21:337:3627:32
8:52
#11383
20M
20.00 mi12:42:022:35:297:4613:56
10:15
#12507
21M
21.00 mi12:53:262:46:537:5711:24
11:24
#13461
35K
21.75 mi13:01:422:55:098:038:16
11:02
#14226
23M
23.00 mi13:15:313:08:588:1313:49
11:02
#15145
24M
24.00 mi13:25:493:19:168:1810:18
10:18
#15594
40K
24.85 mi13:34:183:27:458:228:29
9:56
#15809
25.2M
25.20 mi13:37:443:31:118:233:26
9:56
#15813
Finish
26.22 mi13:46:043:39:318:238:20
8:11
#15747
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi5319495049508320(Top 29%)7133(Top 44%)7133(Top 299%)
10K6.21 mi3.10 mi5484-1655071-1215071-1215718(Top 20%)5247(Top 33%)5247(Top 220%)
15K9.32 mi3.11 mi6573-10895942-8715942-8718320(Top 29%)7133(Top 44%)7133(Top 299%)
20K12.43 mi3.11 mi7688-11156758-8166758-81611602(Top 41%)8779(Top 55%)8779(Top 368%)
Half13.11 mi0.68 mi7878-1906872-1146872-11412466(Top 44%)9198(Top 57%)9198(Top 385%)
25K15.53 mi2.42 mi9904-20268017-11458017-114519261(Top 68%)12081(Top 75%)12081(Top 506%)
30K18.64 mi3.11 mi11383-14798689-6728689-67216945(Top 60%)10897(Top 68%)10897(Top 457%)
20M20.00 mi1.36 mi12507-11249164-4759164-47521712(Top 76%)12908(Top 80%)12908(Top 541%)
21M21.00 mi1.00 mi13461-9549555-3919555-39122379(Top 79%)13135(Top 82%)13135(Top 551%)
35K21.75 mi0.75 mi14226-7659877-3229877-32224276(Top 85%)14012(Top 87%)14012(Top 587%)
23M23.00 mi1.25 mi15145-91910248-37110248-37123325(Top 82%)13490(Top 84%)13490(Top 565%)
24M24.00 mi1.00 mi15594-44910406-15810406-15822227(Top 78%)12914(Top 80%)12914(Top 541%)
40K24.85 mi0.85 mi15809-21510472-6610472-6620231(Top 71%)11898(Top 74%)11898(Top 499%)
25.2M25.20 mi0.35 mi15813-410460+1210460+1216705(Top 59%)10190(Top 63%)10190(Top 427%)
Finish26.22 mi1.02 mi15747+6610406+5410406+5414114(Top 50%)9073(Top 56%)9073(Top 380%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21stories
+97ft-345ft

Overall

8320

Males

7133

M45-49

7133

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5718

Males

5247

M45-49

5247

10K→15K

6.2 - 9.3 mi

Top 29%
×3stories
+67ft-78ft

Overall

8320

Males

7133

M45-49

7133

15K→20K

9.3 - 12.4 mi

Top 41%
×5stories
+106ft-86ft

Overall

11602

Males

8779

M45-49

8779

20K→Half

12.4 - 13.1 mi

Top 44%
×2stories
+19ft-37ft

Overall

12466

Males

9198

M45-49

9198

Half→25K

13.1 - 15.5 mi

Top 68%
×4stories
+66ft-88ft

Overall

19261

Males

12081

M45-49

12081

25K→30K

15.5 - 18.6 mi

Top 60%
×9stories
+181ft-148ft

Overall

16945

Males

10897

M45-49

10897

30K→20M

18.6 - 20.0 mi

Top 76%
×5stories
+64ft-50ft

Overall

21712

Males

12908

M45-49

12908

20M→21M

20.0 - 21.0 mi

Top 79%
×8stories
+106ft-24ft

Overall

22379

Males

13135

M45-49

13135

21M→35K

21.0 - 21.8 mi

Top 85%
×7stories
+17ft-86ft

Overall

24276

Males

14012

M45-49

14012

35K→23M

21.8 - 23.0 mi

Top 82%
×5stories
+23ft-63ft

Overall

23325

Males

13490

M45-49

13490

23M→24M

23.0 - 24.0 mi

Top 78%
×6stories
+12ft-82ft

Overall

22227

Males

12914

M45-49

12914

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

20231

Males

11898

M45-49

11898

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

16705

Males

10190

M45-49

10190

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

14114

Males

9073

M45-49

9073

Passing Analysis

Category:
Athletes Passed
402
Passed By
10828
Net Change
-10428
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5319
5K → 10K111276-165#5319#5484
10K → 15K201109-1089#5484#6573
15K → 20K121127-1115#6573#7688
20K → Half2192-190#7688#7878
Half → 25K82034-2026#7878#9904
25K → 30K321509-1479#9904#11383
30K → 20M151139-1124#11383#12507
20M → 21M9963-954#12507#13461
21M → 35K3768-765#13461#14226
35K → 23M13932-919#14226#15145
23M → 24M10459-449#15145#15594
24M → 40K33248-215#15594#15809
40K → 25.2M3034-4#15809#15813
25.2M → Finish10438+66#15813#15747
TOTALS40210828-10428
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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