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BOSTON MARATHON 2024

Siu Man Lee

Bib: 4452•M

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 43%
Gender (Male)
#0 / 14578
Division (M18-39)
#0 / 4849
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:28
Rank: #6449
Start → 5K
21:28 | 6:55/mi
10K· 6.21 mi
42:58
Rank: #6274 (+175)
5K → 10K
21:30 | 6:55/mi
15K· 9.32 mi
1:04:52
Rank: #6323 (-49)
10K → 15K
21:54 | 7:03/mi
20K· 12.43 mi
1:27:31
Rank: #6435 (-112)
15K → 20K
22:39 | 7:17/mi
Half· 13.11 mi
1:32:27
Rank: #6458 (-23)
20K → Half
4:56 | 7:14/mi
25K· 15.53 mi
1:51:47
Rank: #6910 (-452)
Half → 25K
19:20 | 7:58/mi
30K· 18.64 mi
2:19:42
Rank: #8113 (-1203)
25K → 30K
27:55 | 8:59/mi
20M
2:32:42
Rank: #8657 (-544)
30K → 20M
13:00 | 9:34/mi
21M
2:43:48
Rank: #9231 (-574)
20M → 21M
11:06 | 11:06/mi
35K· 21.75 mi
2:50:39
Rank: #9396 (-165)
21M → 35K
6:51 | 9:09/mi
23M
3:03:14
Rank: #9896 (-500)
35K → 23M
12:35 | 10:03/mi
24M
3:13:09
Rank: #10217 (-321)
23M → 24M
9:55 | 9:55/mi
40K· 24.85 mi
3:22:00
Rank: #10536 (-319)
24M → 40K
8:51 | 10:21/mi
25.2M
3:26:04
Rank: #10696 (-160)
40K → 25.2M
4:04 | 11:48/mi
Finish· 26.22 mi
3:35:59
Rank: #10990 (-294)
25.2M → Finish
9:55 | 9:44/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:27
Pace7:03 /mi
2nd Half
Distance13.11 mi
Time2:03:32
Pace9:25 /mi
📊Positive Split: 33.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:4421:286:5521:28
6:55
-
10K
6.21 mi10:46:1442:586:5521:30
6:55
0:00
15K
9.32 mi11:08:081:04:526:5821:54
7:03
+0:08
20K
12.43 mi11:30:471:27:317:0322:39
7:17
+0:14
Half
13.11 mi11:35:431:32:277:034:56
7:14
-0:03
25K
15.53 mi11:55:031:51:477:1219:20
7:58
+0:44
30K
18.64 mi12:22:582:19:427:3027:55
8:59
+1:01
20M
20.00 mi12:35:582:32:427:3813:00
9:34
+0:35
21M
21.00 mi12:47:042:43:487:4811:06
11:06
+1:32
35K
21.75 mi12:53:552:50:397:516:51
9:09
-1:57
23M
23.00 mi13:06:303:03:147:5812:35
10:03
+0:54
24M
24.00 mi13:16:253:13:098:039:55
9:55
-0:08
40K
24.85 mi13:25:163:22:008:088:51
10:21
+0:26
25.2M
25.20 mi13:29:203:26:048:114:04
11:48
+1:27
Finish
26.22 mi13:39:153:35:598:159:55
9:44
-2:04

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

6:55 /mi

Average Pace

8:15 /mi

Slowest Pace

11:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:47

52% of race

Time at Steady Pace

1:07:36

31% of race

Time at Slower Pace

36:36

17% of race

Average Pace: 8:14 /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 mi10:24:4421:286:5521:28
6:55
#6449
10K
6.21 mi10:46:1442:586:5521:30
6:55
#6274
15K
9.32 mi11:08:081:04:526:5821:54
7:03
#6323
20K
12.43 mi11:30:471:27:317:0322:39
7:17
#6435
Half
13.11 mi11:35:431:32:277:034:56
7:14
#6458
25K
15.53 mi11:55:031:51:477:1219:20
7:58
#6910
30K
18.64 mi12:22:582:19:427:3027:55
8:59
#8113
20M
20.00 mi12:35:582:32:427:3813:00
9:34
#8657
21M
21.00 mi12:47:042:43:487:4811:06
11:06
#9231
35K
21.75 mi12:53:552:50:397:516:51
9:09
#9396
23M
23.00 mi13:06:303:03:147:5812:35
10:03
#9896
24M
24.00 mi13:16:253:13:098:039:55
9:55
#10217
40K
24.85 mi13:25:163:22:008:088:51
10:21
#10536
25.2M
25.20 mi13:29:203:26:048:114:04
11:48
#10696
Finish
26.22 mi13:39:153:35:598:159:55
9:44
#10990
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6449577257726508(Top 25%)5744(Top 39%)5744(Top 118%)
10K6.21 mi3.10 mi6274+1755631+1415631+1416146(Top 24%)5524(Top 38%)5524(Top 114%)
15K9.32 mi3.11 mi6323-495659-285659-286508(Top 25%)5744(Top 39%)5744(Top 118%)
20K12.43 mi3.11 mi6435-1125709-505709-506925(Top 27%)5944(Top 41%)5944(Top 123%)
Half13.11 mi0.68 mi6458-235716-75716-77186(Top 28%)6128(Top 42%)6128(Top 126%)
25K15.53 mi2.42 mi6910-4525992-2765992-27610018(Top 39%)7504(Top 51%)7504(Top 155%)
30K18.64 mi3.11 mi8113-12036657-6656657-66513145(Top 51%)8757(Top 60%)8757(Top 181%)
20M20.00 mi1.36 mi8657-5446923-2666923-26614776(Top 58%)9200(Top 63%)9200(Top 190%)
21M21.00 mi1.00 mi9231-5747158-2357158-23516583(Top 65%)9902(Top 68%)9902(Top 204%)
35K21.75 mi0.75 mi9396-1657209-517209-5114027(Top 55%)8645(Top 59%)8645(Top 178%)
23M23.00 mi1.25 mi9896-5007391-1827391-18215636(Top 61%)9371(Top 64%)9371(Top 193%)
24M24.00 mi1.00 mi10217-3217514-1237514-12316007(Top 63%)9522(Top 65%)9522(Top 196%)
40K24.85 mi0.85 mi10536-3197620-1067620-10616196(Top 63%)9558(Top 66%)9558(Top 197%)
25.2M25.20 mi0.35 mi10696-1607676-567676-5616771(Top 66%)9808(Top 67%)9808(Top 202%)
Finish26.22 mi1.02 mi10990-2947772-967772-9617447(Top 68%)10166(Top 70%)10166(Top 210%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

6508

Males

5744

M18-39

5744

5K→10K

3.1 - 6.2 mi

Top 24%
×5stories
+79ft-138ft

Overall

6146

Males

5524

M18-39

5524

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

6508

Males

5744

M18-39

5744

15K→20K

9.3 - 12.4 mi

Top 27%
×5stories
+106ft-86ft

Overall

6925

Males

5944

M18-39

5944

20K→Half

12.4 - 13.1 mi

Top 28%
×2stories
+19ft-37ft

Overall

7186

Males

6128

M18-39

6128

Half→25K

13.1 - 15.5 mi

Top 39%
×4stories
+66ft-88ft

Overall

10018

Males

7504

M18-39

7504

25K→30K

15.5 - 18.6 mi

Top 51%
×9stories
+181ft-148ft

Overall

13145

Males

8757

M18-39

8757

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

14776

Males

9200

M18-39

9200

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

16583

Males

9902

M18-39

9902

21M→35K

21.0 - 21.8 mi

Top 55%
×7stories
+17ft-86ft

Overall

14027

Males

8645

M18-39

8645

35K→23M

21.8 - 23.0 mi

Top 61%
×5stories
+23ft-63ft

Overall

15636

Males

9371

M18-39

9371

23M→24M

23.0 - 24.0 mi

Top 63%
×6stories
+12ft-82ft

Overall

16007

Males

9522

M18-39

9522

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

16196

Males

9558

M18-39

9558

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

16771

Males

9808

M18-39

9808

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2stories
+22ft-21ft

Overall

17447

Males

10166

M18-39

10166

Passing Analysis

Category:
Athletes Passed
906*
Passed By
5445
Net Change
-4541
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6449
5K → 10K280105+175#6449#6274
10K → 15K125174-49#6274#6323
15K → 20K132244-112#6323#6435
20K → Half2851-23#6435#6458
Half → 25K50502-452#6458#6910
25K → 30K441247-1203#6910#8113
30K → 20M24568-544#8113#8657
20M → 21M26600-574#8657#9231
21M → 35K37202-165#9231#9396
35K → 23M50549-500#9396#9896
23M → 24M43363-321#9896#10217
24M → 40K30*349-319#10217#10536
40K → 25.2M11171-160#10536#10696
25.2M → Finish26320-294#10696#10990
TOTALS906*5445-4541

* 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