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BOSTON MARATHON 2023

Vincent Lau

Bib: 13062•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 47%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
7:44/mi
24:03
↑ 97↓ 3451.5%
10K· 6.21 mi
7:40/mi
47:53
↑ 79↓ 1380.4%
15K· 9.32 mi
7:48/mi
1:12:06
↑ 67↓ 78
20K· 12.43 mi
7:58/mi
1:36:51
↑ 106↓ 860.1%
Half· 13.11 mi
7:52/mi
1:42:13
↑ 19↓ 370.5%
25K· 15.53 mi
8:05/mi
2:01:50
↑ 66↓ 880.2%
30K· 18.64 mi
8:27/mi
2:28:05
↑ 181↓ 1480.2%
20M
8:28/mi
2:39:36
↑ 64↓ 500.2%
21M
8:57/mi
2:48:33
↑ 106↓ 241.6%
35K· 21.75 mi
8:04/mi
2:54:35
↑ 17↓ 861.7%
23M
8:17/mi
3:04:57
↑ 23↓ 630.6%
24M
8:18/mi
3:13:15
↓ 821.3%
40K· 24.85 mi
8:03/mi
3:20:08
↓ 200.3%
25.2M
8:59/mi
3:23:14
↑ 13↓ 160.2%
Finish· 26.22 mi
7:53/mi
3:31:16
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:13
Pace7:48 /mi
2nd Half
Distance13.11 mi
Time1:49:03
Pace8:19 /mi
📊Positive Split: 6.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:2024:037:4424:03
7:44
-
10K
6.21 mi11:16:1047:537:4223:50
7:40
-0:04
15K
9.32 mi11:40:231:12:067:4424:13
7:48
+0:08
20K
12.43 mi12:05:081:36:517:4824:45
7:58
+0:10
Half
13.11 mi12:10:301:42:137:485:22
7:52
-0:06
25K
15.53 mi12:30:072:01:507:5119:37
8:05
+0:13
30K
18.64 mi12:56:222:28:057:5726:15
8:27
+0:22
20M
20.00 mi13:07:532:39:367:5911:31
8:28
+0:01
21M
21.00 mi13:16:502:48:338:028:57
8:57
+0:29
35K
21.75 mi13:22:522:54:358:026:02
8:04
-0:53
23M
23.00 mi13:33:143:04:578:0210:22
8:17
+0:13
24M
24.00 mi13:41:323:13:158:038:18
8:18
+0:01
40K
24.85 mi13:48:253:20:088:036:53
8:03
-0:15
25.2M
25.20 mi13:51:313:23:148:043:06
8:59
+0:56
Finish
26.22 mi13:59:333:31:168:048:02
7:53
-1:06

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

7:40 /mi

Average Pace

8:04 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:41:27

76% of race

Time at Steady Pace

49:49

24% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:03 /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 mi10:52:2024:037:4424:03
7:44
#11821
10K
6.21 mi11:16:1047:537:4223:50
7:40
#11868
15K
9.32 mi11:40:231:12:067:4424:13
7:48
#12110
20K
12.43 mi12:05:081:36:517:4824:45
7:58
#12337
Half
13.11 mi12:10:301:42:137:485:22
7:52
#12376
25K
15.53 mi12:30:072:01:507:5119:37
8:05
#12533
30K
18.64 mi12:56:222:28:057:5726:15
8:27
#12847
20M
20.00 mi13:07:532:39:367:5911:31
8:28
#12881
21M
21.00 mi13:16:502:48:338:028:57
8:57
#12865
35K
21.75 mi13:22:522:54:358:026:02
8:04
#12841
23M
23.00 mi13:33:143:04:578:0210:22
8:17
#12768
24M
24.00 mi13:41:323:13:158:038:18
8:18
#12780
40K
24.85 mi13:48:253:20:088:036:53
8:03
#12682
25.2M
25.20 mi13:51:313:23:148:043:06
8:59
#12675
Finish
26.22 mi13:59:333:31:168:048:02
7:53
#12616
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi118219044904412677(Top 48%)9381(Top 62%)9381(Top 417%)
10K6.21 mi3.10 mi11868-479053-99053-911985(Top 45%)9106(Top 60%)9106(Top 404%)
15K9.32 mi3.11 mi12110-2429136-839136-8312677(Top 48%)9381(Top 62%)9381(Top 417%)
20K12.43 mi3.11 mi12337-2279209-739209-7313135(Top 49%)9498(Top 63%)9498(Top 422%)
Half13.11 mi0.68 mi12376-399224-159224-1513248(Top 50%)9578(Top 63%)9578(Top 425%)
25K15.53 mi2.42 mi12533-1579269-459269-4513428(Top 50%)9533(Top 63%)9533(Top 423%)
30K18.64 mi3.11 mi12847-3149369-1009369-10013977(Top 53%)9637(Top 64%)9637(Top 428%)
20M20.00 mi1.36 mi12881-349364+59364+513465(Top 51%)9336(Top 62%)9336(Top 415%)
21M21.00 mi1.00 mi12865+169337+279337+2713098(Top 49%)9080(Top 60%)9080(Top 403%)
35K21.75 mi0.75 mi12841+249312+259312+2512546(Top 47%)8797(Top 58%)8797(Top 391%)
23M23.00 mi1.25 mi12768+739261+519261+5111733(Top 44%)8351(Top 55%)8351(Top 371%)
24M24.00 mi1.00 mi12780-129242+199242+1913231(Top 50%)8965(Top 59%)8965(Top 398%)
40K24.85 mi0.85 mi12682+989185+579185+5710367(Top 39%)7534(Top 50%)7534(Top 335%)
25.2M25.20 mi0.35 mi12675+79174+119174+1112404(Top 47%)8467(Top 56%)8467(Top 376%)
Finish26.22 mi1.02 mi12616+599127+479127+4711271(Top 42%)7928(Top 52%)7928(Top 352%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21story building
+97ft-345ft

Overall

12677

Males

9381

M45-49

9381

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

11985

Males

9106

M45-49

9106

10K→15K

6.2 - 9.3 mi

Top 48%
×3story building
+67ft-78ft

Overall

12677

Males

9381

M45-49

9381

15K→20K

9.3 - 12.4 mi

Top 49%
×5story building
+106ft-86ft

Overall

13135

Males

9498

M45-49

9498

20K→Half

12.4 - 13.1 mi

Top 50%
×2story building
+19ft-37ft

Overall

13248

Males

9578

M45-49

9578

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

13428

Males

9533

M45-49

9533

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

13977

Males

9637

M45-49

9637

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

13465

Males

9336

M45-49

9336

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

13098

Males

9080

M45-49

9080

21M→35K

21.0 - 21.8 mi

Top 47%
×7story building
+17ft-86ft

Overall

12546

Males

8797

M45-49

8797

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

11733

Males

8351

M45-49

8351

23M→24M

23.0 - 24.0 mi

Top 50%
×6story building
+12ft-82ft

Overall

13231

Males

8965

M45-49

8965

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10367

Males

7534

M45-49

7534

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12404

Males

8467

M45-49

8467

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11271

Males

7928

M45-49

7928

Passing Analysis

Category:
Athletes Passed
1368
Passed By
2163
Net Change
-795
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11821
5K → 10K278325-47#11821#11868
10K → 15K115357-242#11868#12110
15K → 20K104331-227#12110#12337
20K → Half1857-39#12337#12376
Half → 25K79236-157#12376#12533
25K → 30K96410-314#12533#12847
30K → 20M88122-34#12847#12881
20M → 21M10286+16#12881#12865
21M → 35K6642+24#12865#12841
35K → 23M11542+73#12841#12768
23M → 24M6577-12#12768#12780
24M → 40K11416+98#12780#12682
40K → 25.2M3023+7#12682#12675
25.2M → Finish9839+59#12675#12616
TOTALS13682163-795
📊

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