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BOSTON MARATHON 2025

Man Kit Lawance Lau

Bib: 29706•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:45/mi
30:18
↑ 97↓ 3451.5%
10K· 6.21 mi
10:10/mi
1:01:53
↑ 79↓ 1380.4%
15K· 9.32 mi
10:22/mi
1:34:07
↑ 67↓ 78
20K· 12.43 mi
11:44/mi
2:10:33
↑ 106↓ 860.1%
Half· 13.11 mi
11:08/mi
2:18:09
↑ 19↓ 370.5%
25K· 15.53 mi
12:30/mi
2:48:28
↑ 66↓ 880.2%
30K· 18.64 mi
13:30/mi
3:30:23
↑ 181↓ 1480.2%
20M
14:57/mi
3:50:42
↑ 64↓ 500.2%
21M
13:27/mi
4:04:09
↑ 106↓ 241.6%
35K· 21.75 mi
11:55/mi
4:13:04
↑ 17↓ 861.7%
23M
13:35/mi
4:30:05
↑ 23↓ 630.6%
24M
12:10/mi
4:42:15
↓ 821.3%
40K· 24.85 mi
12:44/mi
4:53:08
↓ 200.3%
25.2M
14:13/mi
4:58:02
↑ 13↓ 160.2%
Finish· 26.22 mi
11:56/mi
5:10:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:18:09
Pace10:32 /mi
2nd Half
Distance13.11 mi
Time2:52:03
Pace13:07 /mi
📊Positive Split: 24.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:3030:189:4530:18
9:45
-
10K
6.21 mi12:26:051:01:539:5831:35
10:10
+0:25
15K
9.32 mi12:58:191:34:0710:0632:14
10:22
+0:12
20K
12.43 mi13:34:452:10:3310:3036:26
11:44
+1:22
Half
13.11 mi13:42:212:18:0910:327:36
11:08
-0:36
25K
15.53 mi14:12:402:48:2810:5130:19
12:30
+1:22
30K
18.64 mi14:54:353:30:2311:1741:55
13:30
+1:00
20M
20.00 mi15:14:543:50:4211:3220:19
14:57
+1:27
21M
21.00 mi15:28:214:04:0911:3813:27
13:27
-1:30
35K
21.75 mi15:37:164:13:0411:388:55
11:55
-1:32
23M
23.00 mi15:54:174:30:0511:4517:01
13:35
+1:40
24M
24.00 mi16:06:274:42:1511:4612:10
12:10
-1:25
40K
24.85 mi16:17:204:53:0811:4810:53
12:44
+0:34
25.2M
25.20 mi16:22:144:58:0211:504:54
14:13
+1:29
Finish
26.22 mi16:34:245:10:1211:5012:10
11:56
-2:17

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

9:45 /mi

Average Pace

11:50 /mi

Slowest Pace

14:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:43

33% of race

Time at Steady Pace

1:50:53

36% of race

Time at Slower Pace

1:37:36

31% of race

Average Pace: 11:50 /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 mi11:54:3030:189:4530:18
9:45
#24980
10K
6.21 mi12:26:051:01:539:5831:35
10:10
#25339
15K
9.32 mi12:58:191:34:0710:0632:14
10:22
#25522
20K
12.43 mi13:34:452:10:3310:3036:26
11:44
#25980
Half
13.11 mi13:42:212:18:0910:327:36
11:08
#26020
25K
15.53 mi14:12:402:48:2810:5130:19
12:30
#26263
30K
18.64 mi14:54:353:30:2311:1741:55
13:30
#26525
20M
20.00 mi15:14:543:50:4211:3220:19
14:57
#26694
21M
21.00 mi15:28:214:04:0911:3813:27
13:27
#26640
35K
21.75 mi15:37:164:13:0411:388:55
11:55
#26620
23M
23.00 mi15:54:174:30:0511:4517:01
13:35
#26652
24M
24.00 mi16:06:274:42:1511:4612:10
12:10
#26645
40K
24.85 mi16:17:204:53:0811:4810:53
12:44
#26636
25.2M
25.20 mi16:22:144:58:0211:504:54
14:13
#26641
Finish
26.22 mi16:34:245:10:1211:5012:10
11:56
#26650
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi24980147171471725722(Top 91%)15027(Top 93%)15027(Top 912%)
10K6.21 mi3.10 mi25339-35914860-14314860-14325669(Top 90%)14990(Top 93%)14990(Top 910%)
15K9.32 mi3.11 mi25522-18314949-8914949-8925722(Top 91%)15027(Top 93%)15027(Top 912%)
20K12.43 mi3.11 mi25980-45815138-18915138-18926874(Top 95%)15489(Top 96%)15489(Top 940%)
Half13.11 mi0.68 mi26020-4015154-1615154-1626703(Top 94%)15397(Top 96%)15397(Top 934%)
25K15.53 mi2.42 mi26263-24315268-11415268-11426929(Top 95%)15476(Top 96%)15476(Top 939%)
30K18.64 mi3.11 mi26525-26215339-7115339-7127135(Top 96%)15492(Top 96%)15492(Top 940%)
20M20.00 mi1.36 mi26694-16915396-5715396-5727841(Top 98%)15788(Top 98%)15788(Top 958%)
21M21.00 mi1.00 mi26640+5415367+2915367+2925618(Top 90%)14689(Top 91%)14689(Top 891%)
35K21.75 mi0.75 mi26620+2015348+1915348+1925745(Top 91%)14705(Top 91%)14705(Top 892%)
23M23.00 mi1.25 mi26652-3215345+315345+326957(Top 95%)15306(Top 95%)15306(Top 929%)
24M24.00 mi1.00 mi26645+715338+715338+725877(Top 91%)14737(Top 92%)14737(Top 894%)
40K24.85 mi0.85 mi26636+915330+815330+825979(Top 91%)14778(Top 92%)14778(Top 897%)
25.2M25.20 mi0.35 mi26641-515327+315327+326506(Top 93%)15006(Top 93%)15006(Top 911%)
Finish26.22 mi1.02 mi26650-915324+315324+326719(Top 94%)15167(Top 94%)15167(Top 920%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21story building
+97ft-345ft

Overall

25722

Males

15027

M55-59

15027

5K→10K

3.1 - 6.2 mi

Top 90%
×5story building
+79ft-138ft

Overall

25669

Males

14990

M55-59

14990

10K→15K

6.2 - 9.3 mi

Top 91%
×3story building
+67ft-78ft

Overall

25722

Males

15027

M55-59

15027

15K→20K

9.3 - 12.4 mi

Top 95%
×5story building
+106ft-86ft

Overall

26874

Males

15489

M55-59

15489

20K→Half

12.4 - 13.1 mi

Top 94%
×2story building
+19ft-37ft

Overall

26703

Males

15397

M55-59

15397

Half→25K

13.1 - 15.5 mi

Top 95%
×4story building
+66ft-88ft

Overall

26929

Males

15476

M55-59

15476

25K→30K

15.5 - 18.6 mi

Top 96%
×9story building
+181ft-148ft

Overall

27135

Males

15492

M55-59

15492

30K→20M

18.6 - 20.0 mi

Top 98%
×5story building
+64ft-50ft

Overall

27841

Males

15788

M55-59

15788

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

25618

Males

14689

M55-59

14689

21M→35K

21.0 - 21.8 mi

Top 91%
×7story building
+17ft-86ft

Overall

25745

Males

14705

M55-59

14705

35K→23M

21.8 - 23.0 mi

Top 95%
×5story building
+23ft-63ft

Overall

26957

Males

15306

M55-59

15306

23M→24M

23.0 - 24.0 mi

Top 91%
×6story building
+12ft-82ft

Overall

25877

Males

14737

M55-59

14737

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

25979

Males

14778

M55-59

14778

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

26506

Males

15006

M55-59

15006

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2story building
+22ft-21ft

Overall

26719

Males

15167

M55-59

15167

Passing Analysis

Category:
Athletes Passed
481
Passed By
2151
Net Change
-1670
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24980
5K → 10K83442-359#24980#25339
10K → 15K73256-183#25339#25522
15K → 20K35493-458#25522#25980
20K → Half1353-40#25980#26020
Half → 25K19262-243#26020#26263
25K → 30K33295-262#26263#26525
30K → 20M11180-169#26525#26694
20M → 21M6814+54#26694#26640
21M → 35K3515+20#26640#26620
35K → 23M3466-32#26620#26652
23M → 24M2619+7#26652#26645
24M → 40K2819+9#26645#26636
40K → 25.2M813-5#26636#26641
25.2M → Finish1524-9#26641#26650
TOTALS4812151-1670
📊

Passing Visuals

Category:
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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