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BOSTON MARATHON 2023

Richard Lam

Bib: 7070•M

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 39%
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
23:36
Rank: #10486
Start → 5K
23:36 | 7:36/mi
10K· 6.21 mi
47:20
Rank: #11069 (-583)
5K → 10K
23:44 | 7:38/mi
15K· 9.32 mi
1:11:37
Rank: #11635 (-566)
10K → 15K
24:17 | 7:49/mi
20K· 12.43 mi
1:35:16
Rank: #11235 (+400)
15K → 20K
23:39 | 7:37/mi
Half· 13.11 mi
1:40:24
Rank: #11178 (+57)
20K → Half
5:08 | 7:31/mi
25K· 15.53 mi
1:58:53
Rank: #10926 (+252)
Half → 25K
18:29 | 7:37/mi
30K· 18.64 mi
2:23:16
Rank: #10634 (+292)
25K → 30K
24:23 | 7:51/mi
20M
2:34:07
Rank: #10601 (+33)
30K → 20M
10:51 | 7:59/mi
21M
2:42:27
Rank: #10499 (+102)
20M → 21M
8:20 | 8:20/mi
35K· 21.75 mi
2:48:11
Rank: #10445 (+54)
21M → 35K
5:44 | 7:40/mi
23M
2:58:11
Rank: #10370 (+75)
35K → 23M
10:00 | 7:59/mi
24M
3:05:56
Rank: #10316 (+54)
23M → 24M
7:45 | 7:45/mi
40K· 24.85 mi
3:12:49
Rank: #10298 (+18)
24M → 40K
6:53 | 8:03/mi
25.2M
3:15:48
Rank: #10282 (+16)
40K → 25.2M
2:59 | 8:39/mi
Finish· 26.22 mi
3:24:09
Rank: #10398 (-116)
25.2M → Finish
8:21 | 8:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:24
Pace7:40 /mi
2nd Half
Distance13.11 mi
Time1:43:45
Pace7:55 /mi
📊Positive Split: 3.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:28:1523:367:3623:36
7:36
-
10K
6.21 mi10:51:5947:207:3723:44
7:38
+0:02
15K
9.32 mi11:16:161:11:377:4124:17
7:49
+0:11
20K
12.43 mi11:39:551:35:167:4023:39
7:37
-0:12
Half
13.11 mi11:45:031:40:247:405:08
7:31
-0:06
25K
15.53 mi12:03:321:58:537:3918:29
7:37
+0:06
30K
18.64 mi12:27:552:23:167:4124:23
7:51
+0:14
20M
20.00 mi12:38:462:34:077:4210:51
7:59
+0:08
21M
21.00 mi12:47:062:42:277:448:20
8:20
+0:21
35K
21.75 mi12:52:502:48:117:445:44
7:40
-0:40
23M
23.00 mi13:02:502:58:117:4510:00
7:59
+0:19
24M
24.00 mi13:10:353:05:567:457:45
7:45
-0:14
40K
24.85 mi13:17:283:12:497:456:53
8:03
+0:18
25.2M
25.20 mi13:20:273:15:487:462:59
8:39
+0:36
Finish
26.22 mi13:28:483:24:097:488:21
8:12
-0:27

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

7:31 /mi

Average Pace

7:48 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:50

94% of race

Time at Steady Pace

11:19

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:47 /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 mi10:28:1523:367:3623:36
7:36
#10486
10K
6.21 mi10:51:5947:207:3723:44
7:38
#11069
15K
9.32 mi11:16:161:11:377:4124:17
7:49
#11635
20K
12.43 mi11:39:551:35:167:4023:39
7:37
#11235
Half
13.11 mi11:45:031:40:247:405:08
7:31
#11178
25K
15.53 mi12:03:321:58:537:3918:29
7:37
#10926
30K
18.64 mi12:27:552:23:167:4124:23
7:51
#10634
20M
20.00 mi12:38:462:34:077:4210:51
7:59
#10601
21M
21.00 mi12:47:062:42:277:448:20
8:20
#10499
35K
21.75 mi12:52:502:48:117:445:44
7:40
#10445
23M
23.00 mi13:02:502:58:117:4510:00
7:59
#10370
24M
24.00 mi13:10:353:05:567:457:45
7:45
#10316
40K
24.85 mi13:17:283:12:497:456:53
8:03
#10298
25.2M
25.20 mi13:20:273:15:487:462:59
8:39
#10282
Finish
26.22 mi13:28:483:24:097:488:21
8:12
#10398
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi104868398839812856(Top 48%)9453(Top 62%)9453(Top 179%)
10K6.21 mi3.10 mi11069-5838692-2948692-29411666(Top 44%)8964(Top 59%)8964(Top 170%)
15K9.32 mi3.11 mi11635-5668933-2418933-24112856(Top 48%)9453(Top 62%)9453(Top 179%)
20K12.43 mi3.11 mi11235+4008754+1798754+17910165(Top 38%)8163(Top 54%)8163(Top 154%)
Half13.11 mi0.68 mi11178+578732+228732+2210384(Top 39%)8293(Top 55%)8293(Top 157%)
25K15.53 mi2.42 mi10926+2528596+1368596+1369725(Top 37%)7838(Top 52%)7838(Top 148%)
30K18.64 mi3.11 mi10634+2928398+1988398+1989724(Top 37%)7685(Top 51%)7685(Top 145%)
20M20.00 mi1.36 mi10601+338361+378361+3710140(Top 38%)7828(Top 52%)7828(Top 148%)
21M21.00 mi1.00 mi10499+1028280+818280+819409(Top 35%)7296(Top 48%)7296(Top 138%)
35K21.75 mi0.75 mi10445+548239+418239+419688(Top 36%)7460(Top 49%)7460(Top 141%)
23M23.00 mi1.25 mi10370+758173+668173+669639(Top 36%)7312(Top 48%)7312(Top 138%)
24M24.00 mi1.00 mi10316+548121+528121+529420(Top 35%)7118(Top 47%)7118(Top 135%)
40K24.85 mi0.85 mi10298+188083+388083+3810350(Top 39%)7517(Top 50%)7517(Top 142%)
25.2M25.20 mi0.35 mi10282+168060+238060+2310398(Top 39%)7496(Top 49%)7496(Top 142%)
Finish26.22 mi1.02 mi10398-1168089-298089-2913360(Top 50%)8945(Top 59%)8945(Top 169%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21stories
+97ft-345ft

Overall

12856

Males

9453

M18-39

9453

5K→10K

3.1 - 6.2 mi

Top 44%
×5stories
+79ft-138ft

Overall

11666

Males

8964

M18-39

8964

10K→15K

6.2 - 9.3 mi

Top 48%
×3stories
+67ft-78ft

Overall

12856

Males

9453

M18-39

9453

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10165

Males

8163

M18-39

8163

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

10384

Males

8293

M18-39

8293

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9725

Males

7838

M18-39

7838

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

9724

Males

7685

M18-39

7685

30K→20M

18.6 - 20.0 mi

Top 38%
×5stories
+64ft-50ft

Overall

10140

Males

7828

M18-39

7828

20M→21M

20.0 - 21.0 mi

Top 35%
×8stories
+106ft-24ft

Overall

9409

Males

7296

M18-39

7296

21M→35K

21.0 - 21.8 mi

Top 36%
×7stories
+17ft-86ft

Overall

9688

Males

7460

M18-39

7460

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

9639

Males

7312

M18-39

7312

23M→24M

23.0 - 24.0 mi

Top 35%
×6stories
+12ft-82ft

Overall

9420

Males

7118

M18-39

7118

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10350

Males

7517

M18-39

7517

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

10398

Males

7496

M18-39

7496

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

13360

Males

8945

M18-39

8945

Passing Analysis

Category:
Athletes Passed
1915*
Passed By
1827
Net Change
+88
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10486
5K → 10K104687-583#10486#11069
10K → 15K53619-566#11069#11635
15K → 20K42222+400#11635#11235
20K → Half603+57#11235#11178
Half → 25K26917+252#11178#10926
25K → 30K34048+292#10926#10634
30K → 20M98*65+33#10634#10601
20M → 21M13230+102#10601#10499
21M → 35K7521+54#10499#10445
35K → 23M11338+75#10445#10370
23M → 24M8531+54#10370#10316
24M → 40K7759+18#10316#10298
40K → 25.2M46*30+16#10298#10282
25.2M → Finish41157-116#10282#10398
TOTALS1915*1827+88

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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