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BOSTON MARATHON 2025

Yu Leung Lok

Bib: 12961•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 35%
Gender (Male)
#0 / 16105
Top 48%
Masters (Masters Men)
#0 / 10463
Top 37%
Division (M50-54)
#0 / 1996
Top 38%
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
7:02/mi
21:50
↑ 97↓ 3451.5%
10K· 6.21 mi
7:13/mi
44:15
↑ 79↓ 1380.4%
15K· 9.32 mi
7:08/mi
1:06:26
↑ 67↓ 78
20K· 12.43 mi
7:16/mi
1:29:00
↑ 106↓ 860.1%
Half· 13.11 mi
7:18/mi
1:33:59
↑ 19↓ 370.5%
25K· 15.53 mi
7:33/mi
1:52:17
↑ 66↓ 880.2%
30K· 18.64 mi
7:54/mi
2:16:50
↑ 181↓ 1480.2%
20M
8:01/mi
2:27:44
↑ 64↓ 500.2%
21M
8:13/mi
2:35:57
↑ 106↓ 241.6%
35K· 21.75 mi
7:36/mi
2:41:38
↑ 17↓ 861.7%
23M
8:12/mi
2:51:54
↑ 23↓ 630.6%
24M
8:25/mi
3:00:19
↓ 821.3%
40K· 24.85 mi
8:38/mi
3:07:42
↓ 200.3%
25.2M
9:54/mi
3:11:07
↑ 13↓ 160.2%
Finish· 26.22 mi
8:15/mi
3:19:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:59
Pace7:10 /mi
2nd Half
Distance13.11 mi
Time1:45:32
Pace8:03 /mi
📊Positive Split: 12.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:2721:507:0221:50
7:02
-
10K
6.21 mi11:15:5244:157:0722:25
7:13
+0:11
15K
9.32 mi11:38:031:06:267:0822:11
7:08
-0:05
20K
12.43 mi12:00:371:29:007:1022:34
7:16
+0:08
Half
13.11 mi12:05:361:33:597:104:59
7:18
+0:02
25K
15.53 mi12:23:541:52:177:1418:18
7:33
+0:15
30K
18.64 mi12:48:272:16:507:2024:33
7:54
+0:21
20M
20.00 mi12:59:212:27:447:2310:54
8:01
+0:07
21M
21.00 mi13:07:342:35:577:268:13
8:13
+0:12
35K
21.75 mi13:13:152:41:387:265:41
7:36
-0:37
23M
23.00 mi13:23:312:51:547:2810:16
8:12
+0:36
24M
24.00 mi13:31:563:00:197:318:25
8:25
+0:13
40K
24.85 mi13:39:193:07:427:337:23
8:38
+0:13
25.2M
25.20 mi13:42:443:11:077:353:25
9:54
+1:16
Finish
26.22 mi13:51:083:19:317:378:24
8:15
-1:39

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

7:02 /mi

Average Pace

7:37 /mi

Slowest Pace

9:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:59

47% of race

Time at Steady Pace

1:26:19

43% of race

Time at Slower Pace

19:13

10% of race

Average Pace: 7:37 /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 mi10:53:2721:507:0221:50
7:02
#8034
10K
6.21 mi11:15:5244:157:0722:25
7:13
#8794
15K
9.32 mi11:38:031:06:267:0822:11
7:08
#8721
20K
12.43 mi12:00:371:29:007:1022:34
7:16
#8651
Half
13.11 mi12:05:361:33:597:104:59
7:18
#8698
25K
15.53 mi12:23:541:52:177:1418:18
7:33
#8933
30K
18.64 mi12:48:272:16:507:2024:33
7:54
#9202
20M
20.00 mi12:59:212:27:447:2310:54
8:01
#9275
21M
21.00 mi13:07:342:35:577:268:13
8:13
#9205
35K
21.75 mi13:13:152:41:387:265:41
7:36
#9174
23M
23.00 mi13:23:312:51:547:2810:16
8:12
#9269
24M
24.00 mi13:31:563:00:197:318:25
8:25
#9477
40K
24.85 mi13:39:193:07:427:337:23
8:38
#9673
25.2M
25.20 mi13:42:443:11:077:353:25
9:54
#9804
Finish
26.22 mi13:51:083:19:317:378:24
8:15
#10000
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi8034702170218626(Top 30%)7331(Top 46%)7331(Top 367%)
10K6.21 mi3.10 mi8794-7607477-4567477-4569615(Top 34%)7940(Top 49%)7940(Top 398%)
15K9.32 mi3.11 mi8721+737421+567421+568626(Top 30%)7331(Top 46%)7331(Top 367%)
20K12.43 mi3.11 mi8651+707358+637358+638725(Top 31%)7291(Top 45%)7291(Top 365%)
Half13.11 mi0.68 mi8698-477376-187376-189995(Top 35%)8017(Top 50%)8017(Top 402%)
25K15.53 mi2.42 mi8933-2357492-1167492-11610331(Top 36%)8051(Top 50%)8051(Top 403%)
30K18.64 mi3.11 mi9202-2697581-897581-8910629(Top 37%)7989(Top 50%)7989(Top 400%)
20M20.00 mi1.36 mi9275-737589-87589-810561(Top 37%)7814(Top 49%)7814(Top 391%)
21M21.00 mi1.00 mi9205+707516+737516+738676(Top 31%)6640(Top 41%)6640(Top 333%)
35K21.75 mi0.75 mi9174+317478+387478+389302(Top 33%)7008(Top 44%)7008(Top 351%)
23M23.00 mi1.25 mi9269-957488-107488-1011340(Top 40%)7907(Top 49%)7907(Top 396%)
24M24.00 mi1.00 mi9477-2087565-777565-7713958(Top 49%)9108(Top 57%)9108(Top 456%)
40K24.85 mi0.85 mi9673-1967636-717636-7114231(Top 50%)9096(Top 56%)9096(Top 456%)
25.2M25.20 mi0.35 mi9804-1317677-417677-4116517(Top 58%)10110(Top 63%)10110(Top 507%)
Finish26.22 mi1.02 mi10000-1967754-777754-7714514(Top 51%)9255(Top 57%)9255(Top 464%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21story building
+97ft-345ft

Overall

8626

Males

7331

M50-54

7331

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

9615

Males

7940

M50-54

7940

10K→15K

6.2 - 9.3 mi

Top 30%
×3story building
+67ft-78ft

Overall

8626

Males

7331

M50-54

7331

15K→20K

9.3 - 12.4 mi

Top 31%
×5story building
+106ft-86ft

Overall

8725

Males

7291

M50-54

7291

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9995

Males

8017

M50-54

8017

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

10331

Males

8051

M50-54

8051

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

10629

Males

7989

M50-54

7989

30K→20M

18.6 - 20.0 mi

Top 37%
×5story building
+64ft-50ft

Overall

10561

Males

7814

M50-54

7814

20M→21M

20.0 - 21.0 mi

Top 31%
×8story building
+106ft-24ft

Overall

8676

Males

6640

M50-54

6640

21M→35K

21.0 - 21.8 mi

Top 33%
×7story building
+17ft-86ft

Overall

9302

Males

7008

M50-54

7008

35K→23M

21.8 - 23.0 mi

Top 40%
×5story building
+23ft-63ft

Overall

11340

Males

7907

M50-54

7907

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

13958

Males

9108

M50-54

9108

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

14231

Males

9096

M50-54

9096

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16517

Males

10110

M50-54

10110

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2story building
+22ft-21ft

Overall

14514

Males

9255

M50-54

9255

Passing Analysis

Category:
Athletes Passed
1164
Passed By
3129
Net Change
-1966
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8034
5K → 10K33793-760#8034#8794
10K → 15K198125+73#8794#8721
15K → 20K213143+70#8721#8651
20K → Half1865-47#8651#8698
Half → 25K87322-235#8698#8933
25K → 30K149418-269#8933#9202
30K → 20M77150-73#9202#9275
20M → 21M13161+70#9275#9205
21M → 35K6231+31#9205#9174
35K → 23M88183-95#9174#9269
23M → 24M42250-208#9269#9477
24M → 40K31227-196#9477#9673
40K → 25.2M11142-131#9673#9804
25.2M → Finish24219-196#9804#10000
TOTALS11643129-1966
📊

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