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BOSTON MARATHON 2023

Bryan Lau

Bib: 26744•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
33:09
Rank: #25116
Start → 5K
33:09 | 10:40/mi
10K· 6.21 mi
1:06:23
Rank: #25061 (+55)
5K → 10K
33:14 | 10:42/mi
15K· 9.32 mi
1:38:44
Rank: #24788 (+273)
10K → 15K
32:21 | 10:25/mi
20K· 12.43 mi
2:10:53
Rank: #24475 (+313)
15K → 20K
32:09 | 10:21/mi
Half· 13.11 mi
2:17:57
Rank: #24439 (+36)
20K → Half
7:04 | 10:21/mi
25K· 15.53 mi
2:44:05
Rank: #24296 (+143)
Half → 25K
26:08 | 10:47/mi
30K· 18.64 mi
3:19:07
Rank: #24138 (+158)
25K → 30K
35:02 | 11:17/mi
20M
3:34:18
Rank: #24052 (+86)
30K → 20M
15:11 | 11:10/mi
21M
3:46:47
Rank: #24042 (+10)
20M → 21M
12:29 | 12:29/mi
35K· 21.75 mi
3:55:15
Rank: #24035 (+7)
21M → 35K
8:28 | 11:19/mi
23M
4:10:06
Rank: #24022 (+13)
35K → 23M
14:51 | 11:52/mi
24M
4:21:23
Rank: #24007 (+15)
23M → 24M
11:17 | 11:17/mi
40K· 24.85 mi
4:31:39
Rank: #24012 (-5)
24M → 40K
10:16 | 12:00/mi
25.2M
4:36:02
Rank: #24012
40K → 25.2M
4:23 | 12:43/mi
Finish· 26.22 mi
4:47:15
Rank: #24009 (+3)
25.2M → Finish
11:13 | 11:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:17:57
Pace10:31 /mi
2nd Half
Distance13.11 mi
Time2:29:18
Pace11:23 /mi
📊Positive Split: 8.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:0033:0910:4033:09
10:40
-
10K
6.21 mi12:23:141:06:2310:4133:14
10:42
+0:02
15K
9.32 mi12:55:351:38:4410:3632:21
10:25
-0:17
20K
12.43 mi13:27:442:10:5310:3232:09
10:21
-0:04
Half
13.11 mi13:34:482:17:5710:317:04
10:21
0:00
25K
15.53 mi14:00:562:44:0510:3426:08
10:47
+0:26
30K
18.64 mi14:35:583:19:0710:4135:02
11:17
+0:30
20M
20.00 mi14:51:093:34:1810:4315:11
11:10
-0:07
21M
21.00 mi15:03:383:46:4710:4812:29
12:29
+1:19
35K
21.75 mi15:12:063:55:1510:498:28
11:19
-1:10
23M
23.00 mi15:26:574:10:0610:5214:51
11:52
+0:33
24M
24.00 mi15:38:144:21:2310:5311:17
11:17
-0:35
40K
24.85 mi15:48:304:31:3910:5610:16
12:00
+0:43
25.2M
25.20 mi15:52:534:36:0210:574:23
12:43
+0:43
Finish
26.22 mi16:04:064:47:1510:5811:13
11:00
-1:43

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

10:21 /mi

Average Pace

10:58 /mi

Slowest Pace

12:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:05

57% of race

Time at Steady Pace

1:21:11

28% of race

Time at Slower Pace

41:59

15% of race

Average Pace: 10:57 /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 mi11:50:0033:0910:4033:09
10:40
#25116
10K
6.21 mi12:23:141:06:2310:4133:14
10:42
#25061
15K
9.32 mi12:55:351:38:4410:3632:21
10:25
#24788
20K
12.43 mi13:27:442:10:5310:3232:09
10:21
#24475
Half
13.11 mi13:34:482:17:5710:317:04
10:21
#24439
25K
15.53 mi14:00:562:44:0510:3426:08
10:47
#24296
30K
18.64 mi14:35:583:19:0710:4135:02
11:17
#24138
20M
20.00 mi14:51:093:34:1810:4315:11
11:10
#24052
21M
21.00 mi15:03:383:46:4710:4812:29
12:29
#24042
35K
21.75 mi15:12:063:55:1510:498:28
11:19
#24035
23M
23.00 mi15:26:574:10:0610:5214:51
11:52
#24022
24M
24.00 mi15:38:144:21:2310:5311:17
11:17
#24007
40K
24.85 mi15:48:304:31:3910:5610:16
12:00
#24012
25.2M
25.20 mi15:52:534:36:0210:574:23
12:43
#24012
Finish
26.22 mi16:04:064:47:1510:5811:13
11:00
#24009
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi25116145961459624298(Top 91%)14222(Top 94%)14222(Top 269%)
10K6.21 mi3.10 mi25061+5514571+2514571+2525013(Top 94%)14543(Top 96%)14543(Top 275%)
15K9.32 mi3.11 mi24788+27314436+13514436+13524298(Top 91%)14222(Top 94%)14222(Top 269%)
20K12.43 mi3.11 mi24475+31314295+14114295+14123565(Top 89%)13873(Top 91%)13873(Top 262%)
Half13.11 mi0.68 mi24439+3614275+2014275+2023922(Top 90%)14030(Top 92%)14030(Top 265%)
25K15.53 mi2.42 mi24296+14314201+7414201+7423635(Top 89%)13863(Top 91%)13863(Top 262%)
30K18.64 mi3.11 mi24138+15814117+8414117+8423535(Top 88%)13763(Top 91%)13763(Top 260%)
20M20.00 mi1.36 mi24052+8614068+4914068+4922977(Top 86%)13458(Top 89%)13458(Top 255%)
21M21.00 mi1.00 mi24042+1014056+1214056+1223437(Top 88%)13639(Top 90%)13639(Top 258%)
35K21.75 mi0.75 mi24035+714050+614050+623822(Top 89%)13753(Top 91%)13753(Top 260%)
23M23.00 mi1.25 mi24022+1314028+2214028+2223799(Top 89%)13773(Top 91%)13773(Top 261%)
24M24.00 mi1.00 mi24007+1514016+1214016+1223557(Top 88%)13613(Top 90%)13613(Top 258%)
40K24.85 mi0.85 mi24012-514011+514011+523901(Top 90%)13748(Top 91%)13748(Top 260%)
25.2M25.20 mi0.35 mi2401214010+114010+123589(Top 89%)13591(Top 90%)13591(Top 257%)
Finish26.22 mi1.02 mi24009+314005+514005+523981(Top 90%)13808(Top 91%)13808(Top 261%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21stories
+97ft-345ft

Overall

24298

Males

14222

M18-39

14222

5K→10K

3.1 - 6.2 mi

Top 94%
×5stories
+79ft-138ft

Overall

25013

Males

14543

M18-39

14543

10K→15K

6.2 - 9.3 mi

Top 91%
×3stories
+67ft-78ft

Overall

24298

Males

14222

M18-39

14222

15K→20K

9.3 - 12.4 mi

Top 89%
×5stories
+106ft-86ft

Overall

23565

Males

13873

M18-39

13873

20K→Half

12.4 - 13.1 mi

Top 90%
×2stories
+19ft-37ft

Overall

23922

Males

14030

M18-39

14030

Half→25K

13.1 - 15.5 mi

Top 89%
×4stories
+66ft-88ft

Overall

23635

Males

13863

M18-39

13863

25K→30K

15.5 - 18.6 mi

Top 88%
×9stories
+181ft-148ft

Overall

23535

Males

13763

M18-39

13763

30K→20M

18.6 - 20.0 mi

Top 86%
×5stories
+64ft-50ft

Overall

22977

Males

13458

M18-39

13458

20M→21M

20.0 - 21.0 mi

Top 88%
×8stories
+106ft-24ft

Overall

23437

Males

13639

M18-39

13639

21M→35K

21.0 - 21.8 mi

Top 89%
×7stories
+17ft-86ft

Overall

23822

Males

13753

M18-39

13753

35K→23M

21.8 - 23.0 mi

Top 89%
×5stories
+23ft-63ft

Overall

23799

Males

13773

M18-39

13773

23M→24M

23.0 - 24.0 mi

Top 88%
×6stories
+12ft-82ft

Overall

23557

Males

13613

M18-39

13613

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

23901

Males

13748

M18-39

13748

40K→25.2M

24.9 - 25.2 mi

Top 89%
×1story
+13ft-16ft

Overall

23589

Males

13591

M18-39

13591

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2stories
+22ft-21ft

Overall

23981

Males

13808

M18-39

13808

Passing Analysis

Category:
Athletes Passed
1528
Passed By
421
Net Change
+1107
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25116
5K → 10K201146+55#25116#25061
10K → 15K29522+273#25061#24788
15K → 20K3207+313#24788#24475
20K → Half426+36#24475#24439
Half → 25K16219+143#24439#24296
25K → 30K20244+158#24296#24138
30K → 20M9812+86#24138#24052
20M → 21M4939+10#24052#24042
21M → 35K2316+7#24042#24035
35K → 23M4229+13#24035#24022
23M → 24M2813+15#24022#24007
24M → 40K2732-5#24007#24012
40K → 25.2M10100#24012#24012
25.2M → Finish2926+3#24012#24009
TOTALS1528421+1107
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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