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BOSTON MARATHON 2023

Wai Leung Lam

Bib: 9026•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 15%
Gender (Male)
#0 / 15176
Top 25%
Masters (Masters Men)
#0 / 9891
Top 12%
Division (M45-49)
#0 / 2252
Top 14%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:45
Rank: #3477
Start → 5K
20:45 | 6:41/mi
10K· 6.21 mi
41:28
Rank: #3729 (-252)
5K → 10K
20:43 | 6:40/mi
15K· 9.32 mi
1:02:06
Rank: #3652 (+77)
10K → 15K
20:38 | 6:38/mi
20K· 12.43 mi
1:23:01
Rank: #3690 (-38)
15K → 20K
20:55 | 6:44/mi
Half· 13.11 mi
1:27:37
Rank: #3730 (-40)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:44:06
Rank: #3785 (-55)
Half → 25K
16:29 | 6:48/mi
30K· 18.64 mi
2:05:48
Rank: #3840 (-55)
25K → 30K
21:42 | 6:59/mi
20M
2:15:20
Rank: #3843 (-3)
30K → 20M
9:32 | 7:01/mi
21M
2:22:51
Rank: #3886 (-43)
20M → 21M
7:31 | 7:31/mi
35K· 21.75 mi
2:27:56
Rank: #3897 (-11)
21M → 35K
5:05 | 6:48/mi
23M
2:36:51
Rank: #3919 (-22)
35K → 23M
8:55 | 7:07/mi
24M
2:43:46
Rank: #3951 (-32)
23M → 24M
6:55 | 6:55/mi
40K· 24.85 mi
2:49:54
Rank: #3993 (-42)
24M → 40K
6:08 | 7:10/mi
25.2M
2:52:31
Rank: #3998 (-5)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
2:59:32
Rank: #4051 (-53)
25.2M → Finish
7:01 | 6:53/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:37
Pace6:41 /mi
2nd Half
Distance13.11 mi
Time1:31:55
Pace7:01 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:5820:456:4120:45
6:41
-
10K
6.21 mi11:06:4141:286:4020:43
6:40
-0:01
15K
9.32 mi11:27:191:02:066:4020:38
6:38
-0:02
20K
12.43 mi11:48:141:23:016:4120:55
6:44
+0:06
Half
13.11 mi11:52:501:27:376:414:36
6:45
+0:01
25K
15.53 mi12:09:191:44:066:4216:29
6:48
+0:03
30K
18.64 mi12:31:012:05:486:4521:42
6:59
+0:11
20M
20.00 mi12:40:332:15:206:469:32
7:01
+0:02
21M
21.00 mi12:48:042:22:516:487:31
7:31
+0:30
35K
21.75 mi12:53:092:27:566:485:05
6:48
-0:43
23M
23.00 mi13:02:042:36:516:498:55
7:07
+0:19
24M
24.00 mi13:08:592:43:466:496:55
6:55
-0:12
40K
24.85 mi13:15:072:49:546:506:08
7:10
+0:15
25.2M
25.20 mi13:17:442:52:316:512:37
7:35
+0:25
Finish
26.22 mi13:24:452:59:326:517:01
6:53
-0:42

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

6:38 /mi

Average Pace

6:51 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:24

94% of race

Time at Steady Pace

10:08

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:51 /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 mi10:45:5820:456:4120:45
6:41
#3477
10K
6.21 mi11:06:4141:286:4020:43
6:40
#3729
15K
9.32 mi11:27:191:02:066:4020:38
6:38
#3652
20K
12.43 mi11:48:141:23:016:4120:55
6:44
#3690
Half
13.11 mi11:52:501:27:376:414:36
6:45
#3730
25K
15.53 mi12:09:191:44:066:4216:29
6:48
#3785
30K
18.64 mi12:31:012:05:486:4521:42
6:59
#3840
20M
20.00 mi12:40:332:15:206:469:32
7:01
#3843
21M
21.00 mi12:48:042:22:516:487:31
7:31
#3886
35K
21.75 mi12:53:092:27:566:485:05
6:48
#3897
23M
23.00 mi13:02:042:36:516:498:55
7:07
#3919
24M
24.00 mi13:08:592:43:466:496:55
6:55
#3951
40K
24.85 mi13:15:072:49:546:506:08
7:10
#3993
25.2M
25.20 mi13:17:442:52:316:512:37
7:35
#3998
Finish
26.22 mi13:24:452:59:326:517:01
6:53
#4051
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi3477327832783631(Top 14%)3426(Top 23%)3426(Top 152%)
10K6.21 mi3.10 mi3729-2523518-2403518-2404036(Top 15%)3795(Top 25%)3795(Top 169%)
15K9.32 mi3.11 mi3652+773450+683450+683631(Top 14%)3426(Top 23%)3426(Top 152%)
20K12.43 mi3.11 mi3690-383491-413491-413824(Top 14%)3606(Top 24%)3606(Top 160%)
Half13.11 mi0.68 mi3730-403526-353526-354697(Top 18%)4359(Top 29%)4359(Top 194%)
25K15.53 mi2.42 mi3785-553576-503576-504129(Top 16%)3869(Top 25%)3869(Top 172%)
30K18.64 mi3.11 mi3840-553622-463622-464243(Top 16%)3953(Top 26%)3953(Top 176%)
20M20.00 mi1.36 mi3843-33621+13621+14112(Top 15%)3802(Top 25%)3802(Top 169%)
21M21.00 mi1.00 mi3886-433658-373658-374640(Top 17%)4206(Top 28%)4206(Top 187%)
35K21.75 mi0.75 mi3897-113664-63664-64154(Top 16%)3804(Top 25%)3804(Top 169%)
23M23.00 mi1.25 mi3919-223681-173681-174393(Top 17%)4002(Top 26%)4002(Top 178%)
24M24.00 mi1.00 mi3951-323702-213702-214251(Top 16%)3863(Top 25%)3863(Top 172%)
40K24.85 mi0.85 mi3993-423739-373739-374719(Top 18%)4146(Top 27%)4146(Top 184%)
25.2M25.20 mi0.35 mi3998-53744-53744-54281(Top 16%)3751(Top 25%)3751(Top 167%)
Finish26.22 mi1.02 mi4051-533790-463790-464533(Top 17%)3941(Top 26%)3941(Top 175%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3631

Males

3426

M45-49

3426

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

4036

Males

3795

M45-49

3795

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3631

Males

3426

M45-49

3426

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3824

Males

3606

M45-49

3606

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

4697

Males

4359

M45-49

4359

Half→25K

13.1 - 15.5 mi

Top 16%
×4stories
+66ft-88ft

Overall

4129

Males

3869

M45-49

3869

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4243

Males

3953

M45-49

3953

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

4112

Males

3802

M45-49

3802

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4640

Males

4206

M45-49

4206

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4154

Males

3804

M45-49

3804

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4393

Males

4002

M45-49

4002

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4251

Males

3863

M45-49

3863

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4719

Males

4146

M45-49

4146

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4281

Males

3751

M45-49

3751

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4533

Males

3941

M45-49

3941

Passing Analysis

Category:
Athletes Passed
823
Passed By
1397
Net Change
-574
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3477
5K → 10K114366-252#3477#3729
10K → 15K14972+77#3729#3652
15K → 20K80118-38#3652#3690
20K → Half646-40#3690#3730
Half → 25K64119-55#3730#3785
25K → 30K91146-55#3785#3840
30K → 20M5962-3#3840#3843
20M → 21M5396-43#3843#3886
21M → 35K2940-11#3886#3897
35K → 23M4769-22#3897#3919
23M → 24M4274-32#3919#3951
24M → 40K3577-42#3951#3993
40K → 25.2M2227-5#3993#3998
25.2M → Finish3285-53#3998#4051
TOTALS8231397-574
📊

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