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BOSTON MARATHON 2025

Yung Lauw

Bib: 10564•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 (M45-49)
#0 / 2386
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
6:51/mi
21:18
↑ 97↓ 3451.5%
10K· 6.21 mi
6:51/mi
42:34
↑ 79↓ 1380.4%
15K· 9.32 mi
7:01/mi
1:04:21
↑ 67↓ 78
20K· 12.43 mi
7:23/mi
1:27:17
↑ 106↓ 860.1%
Half· 13.11 mi
7:21/mi
1:32:18
↑ 19↓ 370.5%
25K· 15.53 mi
7:30/mi
1:50:30
↑ 66↓ 880.2%
30K· 18.64 mi
8:01/mi
2:15:24
↑ 181↓ 1480.2%
20M
8:40/mi
2:27:11
↑ 64↓ 500.2%
21M
8:48/mi
2:35:59
↑ 106↓ 241.6%
35K· 21.75 mi
8:03/mi
2:42:00
↑ 17↓ 861.7%
23M
8:16/mi
2:52:21
↑ 23↓ 630.6%
24M
8:13/mi
3:00:34
↓ 821.3%
40K· 24.85 mi
8:22/mi
3:07:43
↓ 200.3%
25.2M
9:20/mi
3:10:56
↑ 13↓ 160.2%
Finish· 26.22 mi
8:16/mi
3:19:21
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:18
Pace7:02 /mi
2nd Half
Distance13.11 mi
Time1:47:03
Pace8:10 /mi
📊Positive Split: 16.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:4921:186:5121:18
6:51
-
10K
6.21 mi11:09:0542:346:5121:16
6:51
0:00
15K
9.32 mi11:30:521:04:216:5421:47
7:01
+0:10
20K
12.43 mi11:53:481:27:177:0122:56
7:23
+0:22
Half
13.11 mi11:58:491:32:187:025:01
7:21
-0:02
25K
15.53 mi12:17:011:50:307:0718:12
7:30
+0:09
30K
18.64 mi12:41:552:15:247:1624:54
8:01
+0:31
20M
20.00 mi12:53:422:27:117:2211:47
8:40
+0:39
21M
21.00 mi13:02:302:35:597:268:48
8:48
+0:08
35K
21.75 mi13:08:312:42:007:276:01
8:03
-0:45
23M
23.00 mi13:18:522:52:217:3010:21
8:16
+0:13
24M
24.00 mi13:27:053:00:347:318:13
8:13
-0:03
40K
24.85 mi13:34:143:07:437:337:09
8:22
+0:09
25.2M
25.20 mi13:37:273:10:567:353:13
9:20
+0:58
Finish
26.22 mi13:45:523:19:217:378:25
8:16
-1:04

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

6:51 /mi

Average Pace

7:37 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:30

55% of race

Time at Steady Pace

1:05:03

33% of race

Time at Slower Pace

23:48

12% of race

Average Pace: 7:36 /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 mi10:47:4921:186:5121:18
6:51
#6747
10K
6.21 mi11:09:0542:346:5121:16
6:51
#6762
15K
9.32 mi11:30:521:04:216:5421:47
7:01
#7104
20K
12.43 mi11:53:481:27:177:0122:56
7:23
#7647
Half
13.11 mi11:58:491:32:187:025:01
7:21
#7759
25K
15.53 mi12:17:011:50:307:0718:12
7:30
#8020
30K
18.64 mi12:41:552:15:247:1624:54
8:01
#8544
20M
20.00 mi12:53:422:27:117:2211:47
8:40
#9036
21M
21.00 mi13:02:302:35:597:268:48
8:48
#9215
35K
21.75 mi13:08:312:42:007:276:01
8:03
#9328
23M
23.00 mi13:18:522:52:217:3010:21
8:16
#9443
24M
24.00 mi13:27:053:00:347:318:13
8:13
#9592
40K
24.85 mi13:34:143:07:437:337:09
8:22
#9682
25.2M
25.20 mi13:37:273:10:567:353:13
9:20
#9741
Finish
26.22 mi13:45:523:19:217:378:25
8:16
#9945
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi6747611561157703(Top 27%)6750(Top 42%)6750(Top 283%)
10K6.21 mi3.10 mi6762-156109+66109+66837(Top 24%)6153(Top 38%)6153(Top 258%)
15K9.32 mi3.11 mi7104-3426364-2556364-2557703(Top 27%)6750(Top 42%)6750(Top 283%)
20K12.43 mi3.11 mi7647-5436730-3666730-3669727(Top 34%)7866(Top 49%)7866(Top 330%)
Half13.11 mi0.68 mi7759-1126802-726802-7210426(Top 37%)8239(Top 51%)8239(Top 345%)
25K15.53 mi2.42 mi8020-2616939-1376939-13710005(Top 35%)7876(Top 49%)7876(Top 330%)
30K18.64 mi3.11 mi8544-5247204-2657204-26511467(Top 40%)8417(Top 52%)8417(Top 353%)
20M20.00 mi1.36 mi9036-4927458-2547458-25414847(Top 52%)9835(Top 61%)9835(Top 412%)
21M21.00 mi1.00 mi9215-1797522-647522-6412262(Top 43%)8487(Top 53%)8487(Top 356%)
35K21.75 mi0.75 mi9328-1137562-407562-4012487(Top 44%)8548(Top 53%)8548(Top 358%)
23M23.00 mi1.25 mi9443-1157591-297591-2911791(Top 42%)8128(Top 50%)8128(Top 341%)
24M24.00 mi1.00 mi9592-1497623-327623-3212650(Top 45%)8476(Top 53%)8476(Top 355%)
40K24.85 mi0.85 mi9682-907639-167639-1612503(Top 44%)8273(Top 51%)8273(Top 347%)
25.2M25.20 mi0.35 mi9741-597649-107649-1013517(Top 48%)8687(Top 54%)8687(Top 364%)
Finish26.22 mi1.02 mi9945-2047725-767725-7614633(Top 52%)9305(Top 58%)9305(Top 390%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21story building
+97ft-345ft

Overall

7703

Males

6750

M45-49

6750

5K→10K

3.1 - 6.2 mi

Top 24%
×5story building
+79ft-138ft

Overall

6837

Males

6153

M45-49

6153

10K→15K

6.2 - 9.3 mi

Top 27%
×3story building
+67ft-78ft

Overall

7703

Males

6750

M45-49

6750

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9727

Males

7866

M45-49

7866

20K→Half

12.4 - 13.1 mi

Top 37%
×2story building
+19ft-37ft

Overall

10426

Males

8239

M45-49

8239

Half→25K

13.1 - 15.5 mi

Top 35%
×4story building
+66ft-88ft

Overall

10005

Males

7876

M45-49

7876

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

11467

Males

8417

M45-49

8417

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

14847

Males

9835

M45-49

9835

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

12262

Males

8487

M45-49

8487

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

12487

Males

8548

M45-49

8548

35K→23M

21.8 - 23.0 mi

Top 42%
×5story building
+23ft-63ft

Overall

11791

Males

8128

M45-49

8128

23M→24M

23.0 - 24.0 mi

Top 45%
×6story building
+12ft-82ft

Overall

12650

Males

8476

M45-49

8476

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

12503

Males

8273

M45-49

8273

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

13517

Males

8687

M45-49

8687

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

14633

Males

9305

M45-49

9305

Passing Analysis

Category:
Athletes Passed
751
Passed By
3949
Net Change
-3198
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6747
5K → 10K191206-15#6747#6762
10K → 15K59401-342#6762#7104
15K → 20K36579-543#7104#7647
20K → Half3115-112#7647#7759
Half → 25K57318-261#7759#8020
25K → 30K87611-524#8020#8544
30K → 20M23515-492#8544#9036
20M → 21M49228-179#9036#9215
21M → 35K30143-113#9215#9328
35K → 23M82197-115#9328#9443
23M → 24M42191-149#9443#9592
24M → 40K46136-90#9592#9682
40K → 25.2M2483-59#9682#9741
25.2M → Finish22226-204#9741#9945
TOTALS7513949-3198
📊

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