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BOSTON MARATHON 2024

Thomas Cai Jinzhan

Bib: 28183•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Male)
#0 / 14578
Masters (Masters Men)
#0 / 9729
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
27:48
Rank: #19856
Start → 5K
27:48 | 8:57/mi
10K· 6.21 mi
54:47
Rank: #19126 (+730)
5K → 10K
26:59 | 8:41/mi
15K· 9.32 mi
1:23:01
Rank: #19171 (-45)
10K → 15K
28:14 | 9:05/mi
20K· 12.43 mi
1:54:10
Rank: #19696 (-525)
15K → 20K
31:09 | 10:02/mi
Half· 13.11 mi
2:01:10
Rank: #19886 (-190)
20K → Half
7:00 | 10:16/mi
25K· 15.53 mi
2:27:44
Rank: #20170 (-284)
Half → 25K
26:34 | 10:57/mi
30K· 18.64 mi
3:07:19
Rank: #20884 (-714)
25K → 30K
39:35 | 12:44/mi
20M
3:25:02
Rank: #21084 (-200)
30K → 20M
17:43 | 13:02/mi
21M
3:38:35
Rank: #21148 (-64)
20M → 21M
13:33 | 13:33/mi
35K· 21.75 mi
3:47:44
Rank: #21180 (-32)
21M → 35K
9:09 | 12:14/mi
23M
4:05:12
Rank: #21411 (-231)
35K → 23M
17:28 | 13:57/mi
24M
4:18:47
Rank: #21549 (-138)
23M → 24M
13:35 | 13:35/mi
40K· 24.85 mi
4:30:29
Rank: #21639 (-90)
24M → 40K
11:42 | 13:41/mi
25.2M
4:35:39
Rank: #21658 (-19)
40K → 25.2M
5:10 | 14:59/mi
Finish· 26.22 mi
4:46:21
Rank: #21605 (+53)
25.2M → Finish
10:42 | 10:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:10
Pace9:15 /mi
2nd Half
Distance13.11 mi
Time2:45:11
Pace12:36 /mi
📊Positive Split: 36.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:0827:488:5727:48
8:57
-
10K
6.21 mi12:15:0754:478:4926:59
8:41
-0:16
15K
9.32 mi12:43:211:23:018:5428:14
9:05
+0:24
20K
12.43 mi13:14:301:54:109:1131:09
10:02
+0:57
Half
13.11 mi13:21:302:01:109:157:00
10:16
+0:14
25K
15.53 mi13:48:042:27:449:3126:34
10:57
+0:41
30K
18.64 mi14:27:393:07:1910:0339:35
12:44
+1:47
20M
20.00 mi14:45:223:25:0210:1517:43
13:02
+0:18
21M
21.00 mi14:58:553:38:3510:2513:33
13:33
+0:31
35K
21.75 mi15:08:043:47:4410:289:09
12:14
-1:19
23M
23.00 mi15:25:324:05:1210:4017:28
13:57
+1:43
24M
24.00 mi15:39:074:18:4710:4713:35
13:35
-0:22
40K
24.85 mi15:50:494:30:2910:5311:42
13:41
+0:06
25.2M
25.20 mi15:55:594:35:3910:565:10
14:59
+1:18
Finish
26.22 mi16:06:414:46:2110:5610:42
10:30
-4:29

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

8:41 /mi

Average Pace

10:56 /mi

Slowest Pace

14:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:38:26

55% of race

Time at Steady Pace

1:06:27

23% of race

Time at Slower Pace

1:01:28

21% of race

Average Pace: 10:55 /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 mi11:48:0827:488:5727:48
8:57
#19856
10K
6.21 mi12:15:0754:478:4926:59
8:41
#19126
15K
9.32 mi12:43:211:23:018:5428:14
9:05
#19171
20K
12.43 mi13:14:301:54:109:1131:09
10:02
#19696
Half
13.11 mi13:21:302:01:109:157:00
10:16
#19886
25K
15.53 mi13:48:042:27:449:3126:34
10:57
#20170
30K
18.64 mi14:27:393:07:1910:0339:35
12:44
#20884
20M
20.00 mi14:45:223:25:0210:1517:43
13:02
#21084
21M
21.00 mi14:58:553:38:3510:2513:33
13:33
#21148
35K
21.75 mi15:08:043:47:4410:289:09
12:14
#21180
23M
23.00 mi15:25:324:05:1210:4017:28
13:57
#21411
24M
24.00 mi15:39:074:18:4710:4713:35
13:35
#21549
40K
24.85 mi15:50:494:30:2910:5311:42
13:41
#21639
25.2M
25.20 mi15:55:594:35:3910:565:10
14:59
#21658
Finish
26.22 mi16:06:414:46:2110:5610:42
10:30
#21605
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi19856120071200719266(Top 75%)11833(Top 81%)11833(Top 589%)
10K6.21 mi3.10 mi19126+73011692+31511692+31518282(Top 72%)11359(Top 78%)11359(Top 565%)
15K9.32 mi3.11 mi19171-4511736-4411736-4419266(Top 75%)11833(Top 81%)11833(Top 589%)
20K12.43 mi3.11 mi19696-52511995-25911995-25920639(Top 81%)12441(Top 85%)12441(Top 619%)
Half13.11 mi0.68 mi19886-19012075-8012075-8022118(Top 87%)13047(Top 89%)13047(Top 649%)
25K15.53 mi2.42 mi20170-28412208-13312208-13321416(Top 84%)12675(Top 87%)12675(Top 631%)
30K18.64 mi3.11 mi20884-71412469-26112469-26122955(Top 90%)13277(Top 91%)13277(Top 661%)
20M20.00 mi1.36 mi21084-20012534-6512534-6522898(Top 90%)13147(Top 90%)13147(Top 654%)
21M21.00 mi1.00 mi21148-6412539-512539-521657(Top 85%)12481(Top 86%)12481(Top 621%)
35K21.75 mi0.75 mi21180-3212534+512534+522178(Top 87%)12691(Top 87%)12691(Top 632%)
23M23.00 mi1.25 mi21411-23112615-8112615-8123715(Top 93%)13499(Top 93%)13499(Top 672%)
24M24.00 mi1.00 mi21549-13812663-4812663-4823769(Top 93%)13468(Top 92%)13468(Top 670%)
40K24.85 mi0.85 mi21639-9012687-2412687-2423248(Top 91%)13156(Top 90%)13156(Top 655%)
25.2M25.20 mi0.35 mi21658-1912688-112688-122993(Top 90%)13024(Top 89%)13024(Top 648%)
Finish26.22 mi1.02 mi21605+5312649+3912649+3920014(Top 78%)11489(Top 79%)11489(Top 572%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21stories
+97ft-345ft

Overall

19266

Males

11833

M40-44

11833

5K→10K

3.1 - 6.2 mi

Top 72%
×5stories
+79ft-138ft

Overall

18282

Males

11359

M40-44

11359

10K→15K

6.2 - 9.3 mi

Top 75%
×3stories
+67ft-78ft

Overall

19266

Males

11833

M40-44

11833

15K→20K

9.3 - 12.4 mi

Top 81%
×5stories
+106ft-86ft

Overall

20639

Males

12441

M40-44

12441

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

22118

Males

13047

M40-44

13047

Half→25K

13.1 - 15.5 mi

Top 84%
×4stories
+66ft-88ft

Overall

21416

Males

12675

M40-44

12675

25K→30K

15.5 - 18.6 mi

Top 90%
×9stories
+181ft-148ft

Overall

22955

Males

13277

M40-44

13277

30K→20M

18.6 - 20.0 mi

Top 90%
×5stories
+64ft-50ft

Overall

22898

Males

13147

M40-44

13147

20M→21M

20.0 - 21.0 mi

Top 85%
×8stories
+106ft-24ft

Overall

21657

Males

12481

M40-44

12481

21M→35K

21.0 - 21.8 mi

Top 87%
×7stories
+17ft-86ft

Overall

22178

Males

12691

M40-44

12691

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

23715

Males

13499

M40-44

13499

23M→24M

23.0 - 24.0 mi

Top 93%
×6stories
+12ft-82ft

Overall

23769

Males

13468

M40-44

13468

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

23248

Males

13156

M40-44

13156

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

22993

Males

13024

M40-44

13024

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2stories
+22ft-21ft

Overall

20014

Males

11489

M40-44

11489

Passing Analysis

Category:
Athletes Passed
1503
Passed By
3252
Net Change
-1749
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19856
5K → 10K78454+730#19856#19126
10K → 15K206251-45#19126#19171
15K → 20K106631-525#19171#19696
20K → Half7197-190#19696#19886
Half → 25K80364-284#19886#20170
25K → 30K39753-714#20170#20884
30K → 20M25225-200#20884#21084
20M → 21M53117-64#21084#21148
21M → 35K4173-32#21148#21180
35K → 23M21252-231#21180#21411
23M → 24M28166-138#21411#21549
24M → 40K24114-90#21549#21639
40K → 25.2M1332-19#21639#21658
25.2M → Finish7623+53#21658#21605
TOTALS15033252-1749
📊

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