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BOSTON MARATHON 2024

David Lam

Bib: 3531•M

CA

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 11%
Gender (Male)
#0 / 14578
Top 18%
Division (M18-39)
#0 / 4849
Top 38%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:43
Rank: #2355
Start → 5K
19:43 | 6:21/mi
10K· 6.21 mi
39:49
Rank: #2569 (-214)
5K → 10K
20:06 | 6:28/mi
15K· 9.32 mi
1:00:07
Rank: #2657 (-88)
10K → 15K
20:18 | 6:32/mi
20K· 12.43 mi
1:21:04
Rank: #2821 (-164)
15K → 20K
20:57 | 6:45/mi
Half· 13.11 mi
1:25:29
Rank: #2788 (+33)
20K → Half
4:25 | 6:28/mi
25K· 15.53 mi
1:42:06
Rank: #2823 (-35)
Half → 25K
16:37 | 6:51/mi
30K· 18.64 mi
2:04:16
Rank: #2864 (-41)
25K → 30K
22:10 | 7:08/mi
20M
2:14:07
Rank: #2880 (-16)
30K → 20M
9:51 | 7:15/mi
21M
2:22:08
Rank: #2931 (-51)
20M → 21M
8:01 | 8:01/mi
35K· 21.75 mi
2:27:59
Rank: #3073 (-142)
21M → 35K
5:51 | 7:49/mi
23M
2:36:58
Rank: #2990 (+83)
35K → 23M
8:59 | 7:10/mi
24M
2:44:06
Rank: #2966 (+24)
23M → 24M
7:08 | 7:08/mi
40K· 24.85 mi
2:50:05
Rank: #2878 (+88)
24M → 40K
5:59 | 7:00/mi
25.2M
2:52:44
Rank: #2833 (+45)
40K → 25.2M
2:39 | 7:41/mi
Finish· 26.22 mi
2:59:36
Rank: #2805 (+28)
25.2M → Finish
6:52 | 6:44/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:29
Pace6:31 /mi
2nd Half
Distance13.11 mi
Time1:34:07
Pace7:11 /mi
📊Positive Split: 10.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:0119:436:2119:43
6:21
-
10K
6.21 mi10:42:0739:496:2420:06
6:28
+0:07
15K
9.32 mi11:02:251:00:076:2720:18
6:32
+0:04
20K
12.43 mi11:23:221:21:046:3120:57
6:45
+0:13
Half
13.11 mi11:27:471:25:296:314:25
6:28
-0:17
25K
15.53 mi11:44:241:42:066:3416:37
6:51
+0:23
30K
18.64 mi12:06:342:04:166:4022:10
7:08
+0:17
20M
20.00 mi12:16:252:14:076:429:51
7:15
+0:07
21M
21.00 mi12:24:262:22:086:468:01
8:01
+0:46
35K
21.75 mi12:30:172:27:596:485:51
7:49
-0:12
23M
23.00 mi12:39:162:36:586:498:59
7:10
-0:39
24M
24.00 mi12:46:242:44:066:507:08
7:08
-0:02
40K
24.85 mi12:52:232:50:056:515:59
7:00
-0:08
25.2M
25.20 mi12:55:022:52:446:512:39
7:41
+0:41
Finish
26.22 mi13:01:542:59:366:516:52
6:44
-0:57

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

6:21 /mi

Average Pace

6:51 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:21

51% of race

Time at Steady Pace

1:00:53

34% of race

Time at Slower Pace

26:22

15% 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 mi10:22:0119:436:2119:43
6:21
#2355
10K
6.21 mi10:42:0739:496:2420:06
6:28
#2569
15K
9.32 mi11:02:251:00:076:2720:18
6:32
#2657
20K
12.43 mi11:23:221:21:046:3120:57
6:45
#2821
Half
13.11 mi11:27:471:25:296:314:25
6:28
#2788
25K
15.53 mi11:44:241:42:066:3416:37
6:51
#2823
30K
18.64 mi12:06:342:04:166:4022:10
7:08
#2864
20M
20.00 mi12:16:252:14:076:429:51
7:15
#2880
21M
21.00 mi12:24:262:22:086:468:01
8:01
#2931
35K
21.75 mi12:30:172:27:596:485:51
7:49
#3073
23M
23.00 mi12:39:162:36:586:498:59
7:10
#2990
24M
24.00 mi12:46:242:44:066:507:08
7:08
#2966
40K
24.85 mi12:52:232:50:056:515:59
7:00
#2878
25.2M
25.20 mi12:55:022:52:446:512:39
7:41
#2833
Finish
26.22 mi13:01:542:59:366:516:52
6:44
#2805
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2355227422742895(Top 11%)2763(Top 19%)2763(Top 57%)
10K6.21 mi3.10 mi2569-2142471-1972471-1972811(Top 11%)2688(Top 18%)2688(Top 55%)
15K9.32 mi3.11 mi2657-882552-812552-812895(Top 11%)2763(Top 19%)2763(Top 57%)
20K12.43 mi3.11 mi2821-1642700-1482700-1483465(Top 14%)3274(Top 22%)3274(Top 68%)
Half13.11 mi0.68 mi2788+332665+352665+352484(Top 10%)2379(Top 16%)2379(Top 49%)
25K15.53 mi2.42 mi2823-352692-272692-273497(Top 14%)3264(Top 22%)3264(Top 67%)
30K18.64 mi3.11 mi2864-412722-302722-303487(Top 14%)3189(Top 22%)3189(Top 66%)
20M20.00 mi1.36 mi2880-162728-62728-63324(Top 13%)3009(Top 21%)3009(Top 62%)
21M21.00 mi1.00 mi2931-512773-452773-454210(Top 16%)3585(Top 25%)3585(Top 74%)
35K21.75 mi0.75 mi3073-1422897-1242897-1246644(Top 26%)5030(Top 35%)5030(Top 104%)
23M23.00 mi1.25 mi2990+832811+862811+862489(Top 10%)2240(Top 15%)2240(Top 46%)
24M24.00 mi1.00 mi2966+242783+282783+282762(Top 11%)2434(Top 17%)2434(Top 50%)
40K24.85 mi0.85 mi2878+882697+862697+861844(Top 7%)1668(Top 11%)1668(Top 34%)
25.2M25.20 mi0.35 mi2833+452651+462651+461878(Top 7%)1669(Top 11%)1669(Top 34%)
Finish26.22 mi1.02 mi2805+282620+312620+312124(Top 8%)1850(Top 13%)1850(Top 38%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

2895

Males

2763

M18-39

2763

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

2811

Males

2688

M18-39

2688

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

2895

Males

2763

M18-39

2763

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3465

Males

3274

M18-39

3274

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2484

Males

2379

M18-39

2379

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3497

Males

3264

M18-39

3264

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3487

Males

3189

M18-39

3189

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3324

Males

3009

M18-39

3009

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4210

Males

3585

M18-39

3585

21M→35K

21.0 - 21.8 mi

Top 26%
×7stories
+17ft-86ft

Overall

6644

Males

5030

M18-39

5030

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2489

Males

2240

M18-39

2240

23M→24M

23.0 - 24.0 mi

Top 11%
×6stories
+12ft-82ft

Overall

2762

Males

2434

M18-39

2434

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1844

Males

1668

M18-39

1668

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1878

Males

1669

M18-39

1669

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2124

Males

1850

M18-39

1850

Passing Analysis

Category:
Athletes Passed
958
Passed By
1408
Net Change
-450
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2355
5K → 10K57271-214#2355#2569
10K → 15K57145-88#2569#2657
15K → 20K54218-164#2657#2821
20K → Half4411+33#2821#2788
Half → 25K76111-35#2788#2823
25K → 30K140181-41#2823#2864
30K → 20M7389-16#2864#2880
20M → 21M54105-51#2880#2931
21M → 35K23165-142#2931#3073
35K → 23M11330+83#3073#2990
23M → 24M5733+24#2990#2966
24M → 40K9810+88#2966#2878
40K → 25.2M549+45#2878#2833
25.2M → Finish5830+28#2833#2805
TOTALS9581408-450
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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