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BOSTON MARATHON 2024

Chao Lung Chou

Bib: 7291•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 38%
Gender (Male)
#0 / 14578
Top 49%
Masters (Masters Men)
#0 / 9729
Top 39%
Division (M40-44)
#0 / 2009
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:25
Rank: #3807
Start → 5K
20:25 | 6:34/mi
10K· 6.21 mi
42:13
Rank: #5375 (-1568)
5K → 10K
21:48 | 7:01/mi
15K· 9.32 mi
1:04:17
Rank: #5922 (-547)
10K → 15K
22:04 | 7:06/mi
20K· 12.43 mi
1:27:18
Rank: #6340 (-418)
15K → 20K
23:01 | 7:25/mi
Half· 13.11 mi
1:32:17
Rank: #6380 (-40)
20K → Half
4:59 | 7:18/mi
25K· 15.53 mi
1:50:58
Rank: #6600 (-220)
Half → 25K
18:41 | 7:42/mi
30K· 18.64 mi
2:16:04
Rank: #6807 (-207)
25K → 30K
25:06 | 8:05/mi
20M
2:27:31
Rank: #6907 (-100)
30K → 20M
11:27 | 8:26/mi
21M
2:37:22
Rank: #7188 (-281)
20M → 21M
9:51 | 9:51/mi
35K· 21.75 mi
2:43:57
Rank: #7343 (-155)
21M → 35K
6:35 | 8:48/mi
23M
2:56:54
Rank: #7985 (-642)
35K → 23M
12:57 | 10:21/mi
24M
3:07:39
Rank: #8644 (-659)
23M → 24M
10:45 | 10:45/mi
40K· 24.85 mi
3:16:55
Rank: #9163 (-519)
24M → 40K
9:16 | 10:50/mi
25.2M
3:20:55
Rank: #9354 (-191)
40K → 25.2M
4:00 | 11:36/mi
Finish· 26.22 mi
3:30:09
Rank: #9601 (-247)
25.2M → Finish
9:14 | 9:04/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:17
Pace7:02 /mi
2nd Half
Distance13.11 mi
Time1:57:52
Pace8:59 /mi
📊Positive Split: 27.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:4920:256:3420:25
6:34
-
10K
6.21 mi10:48:3742:136:4821:48
7:01
+0:27
15K
9.32 mi11:10:411:04:176:5422:04
7:06
+0:05
20K
12.43 mi11:33:421:27:187:0123:01
7:25
+0:19
Half
13.11 mi11:38:411:32:177:024:59
7:18
-0:07
25K
15.53 mi11:57:221:50:587:0918:41
7:42
+0:24
30K
18.64 mi12:22:282:16:047:1825:06
8:05
+0:23
20M
20.00 mi12:33:552:27:317:2311:27
8:26
+0:21
21M
21.00 mi12:43:462:37:227:309:51
9:51
+1:25
35K
21.75 mi12:50:212:43:577:326:35
8:48
-1:03
23M
23.00 mi13:03:182:56:547:4112:57
10:21
+1:33
24M
24.00 mi13:14:033:07:397:4910:45
10:45
+0:24
40K
24.85 mi13:23:193:16:557:559:16
10:50
+0:05
25.2M
25.20 mi13:27:193:20:557:584:00
11:36
+0:46
Finish
26.22 mi13:36:333:30:098:019:14
9:04
-2:32

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

6:34 /mi

Average Pace

8:01 /mi

Slowest Pace

11:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:17

44% of race

Time at Steady Pace

1:11:03

34% of race

Time at Slower Pace

46:49

22% of race

Average Pace: 8:01 /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 mi10:26:4920:256:3420:25
6:34
#3807
10K
6.21 mi10:48:3742:136:4821:48
7:01
#5375
15K
9.32 mi11:10:411:04:176:5422:04
7:06
#5922
20K
12.43 mi11:33:421:27:187:0123:01
7:25
#6340
Half
13.11 mi11:38:411:32:177:024:59
7:18
#6380
25K
15.53 mi11:57:221:50:587:0918:41
7:42
#6600
30K
18.64 mi12:22:282:16:047:1825:06
8:05
#6807
20M
20.00 mi12:33:552:27:317:2311:27
8:26
#6907
21M
21.00 mi12:43:462:37:227:309:51
9:51
#7188
35K
21.75 mi12:50:212:43:577:326:35
8:48
#7343
23M
23.00 mi13:03:182:56:547:4112:57
10:21
#7985
24M
24.00 mi13:14:033:07:397:4910:45
10:45
#8644
40K
24.85 mi13:23:193:16:557:559:16
10:50
#9163
25.2M
25.20 mi13:27:193:20:557:584:00
11:36
#9354
Finish
26.22 mi13:36:333:30:098:019:14
9:04
#9601
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi3807360936096810(Top 27%)5942(Top 41%)5942(Top 296%)
10K6.21 mi3.10 mi5375-15684947-13384947-13386780(Top 27%)5967(Top 41%)5967(Top 297%)
15K9.32 mi3.11 mi5922-5475366-4195366-4196810(Top 27%)5942(Top 41%)5942(Top 296%)
20K12.43 mi3.11 mi6340-4185642-2765642-2767688(Top 30%)6414(Top 44%)6414(Top 319%)
Half13.11 mi0.68 mi6380-405660-185660-187694(Top 30%)6440(Top 44%)6440(Top 321%)
25K15.53 mi2.42 mi6600-2205787-1275787-1278308(Top 33%)6604(Top 45%)6604(Top 329%)
30K18.64 mi3.11 mi6807-2075864-775864-778326(Top 33%)6406(Top 44%)6406(Top 319%)
20M20.00 mi1.36 mi6907-1005897-335897-339030(Top 35%)6542(Top 45%)6542(Top 326%)
21M21.00 mi1.00 mi7188-2816029-1326029-13212312(Top 48%)7861(Top 54%)7861(Top 391%)
35K21.75 mi0.75 mi7343-1556088-596088-5912301(Top 48%)7829(Top 54%)7829(Top 390%)
23M23.00 mi1.25 mi7985-6426390-3026390-30216540(Top 65%)9824(Top 67%)9824(Top 489%)
24M24.00 mi1.00 mi8644-6596711-3216711-32118540(Top 73%)10771(Top 74%)10771(Top 536%)
40K24.85 mi0.85 mi9163-5196939-2286939-22817642(Top 69%)10260(Top 70%)10260(Top 511%)
25.2M25.20 mi0.35 mi9354-1917017-787017-7816268(Top 64%)9552(Top 66%)9552(Top 475%)
Finish26.22 mi1.02 mi9601-2477111-947111-9414470(Top 57%)8724(Top 60%)8724(Top 434%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21stories
+97ft-345ft

Overall

6810

Males

5942

M40-44

5942

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

6780

Males

5967

M40-44

5967

10K→15K

6.2 - 9.3 mi

Top 27%
×3stories
+67ft-78ft

Overall

6810

Males

5942

M40-44

5942

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

7688

Males

6414

M40-44

6414

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

7694

Males

6440

M40-44

6440

Half→25K

13.1 - 15.5 mi

Top 33%
×4stories
+66ft-88ft

Overall

8308

Males

6604

M40-44

6604

25K→30K

15.5 - 18.6 mi

Top 33%
×9stories
+181ft-148ft

Overall

8326

Males

6406

M40-44

6406

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9030

Males

6542

M40-44

6542

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

12312

Males

7861

M40-44

7861

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

12301

Males

7829

M40-44

7829

35K→23M

21.8 - 23.0 mi

Top 65%
×5stories
+23ft-63ft

Overall

16540

Males

9824

M40-44

9824

23M→24M

23.0 - 24.0 mi

Top 73%
×6stories
+12ft-82ft

Overall

18540

Males

10771

M40-44

10771

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

17642

Males

10260

M40-44

10260

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

16268

Males

9552

M40-44

9552

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2stories
+22ft-21ft

Overall

14470

Males

8724

M40-44

8724

Passing Analysis

Category:
Athletes Passed
661
Passed By
6455
Net Change
-5794
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3807
5K → 10K111579-1568#3807#5375
10K → 15K33580-547#5375#5922
15K → 20K62480-418#5922#6340
20K → Half2161-40#6340#6380
Half → 25K87307-220#6380#6600
25K → 30K147354-207#6600#6807
30K → 20M97197-100#6807#6907
20M → 21M47328-281#6907#7188
21M → 35K51206-155#7188#7343
35K → 23M32674-642#7343#7985
23M → 24M10669-659#7985#8644
24M → 40K20539-519#8644#9163
40K → 25.2M12203-191#9163#9354
25.2M → Finish31278-247#9354#9601
TOTALS6616455-5794
📊

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