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BOSTON MARATHON 2024

Zhaolin Cheng

Bib: 8021•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 22%
Gender (Male)
#0 / 14578
Top 33%
Masters (Masters Men)
#0 / 9729
Top 22%
Division (M45-49)
#0 / 2218
Top 31%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:01
Rank: #5367
Start → 5K
6:46/mi
21:01 split
10K· 6.21 mi
42:03
Rank: #5137 (+230)
5K → 10K
6:46/mi
21:02 split
15K· 9.32 mi
1:03:01
Rank: #4834 (+303)
10K → 15K
6:45/mi
20:58 split
20K· 12.43 mi
1:24:19
Rank: #4618 (+216)
15K → 20K
6:51/mi
21:18 split
Half· 13.11 mi
1:28:57
Rank: #4599 (+19)
20K → Half
6:47/mi
4:38 split
25K· 15.53 mi
1:45:56
Rank: #4500 (+99)
Half → 25K
7:00/mi
16:59 split
30K· 18.64 mi
2:09:31
Rank: #4718 (-218)
25K → 30K
7:35/mi
23:35 split
20M
2:21:01
Rank: #4961 (-243)
30K → 20M
8:28/mi
11:30 split
21M
2:30:00
Rank: #5086 (-125)
20M → 21M
8:59/mi
8:59 split
35K· 21.75 mi
2:36:05
Rank: #5134 (-48)
21M → 35K
8:08/mi
6:05 split
23M
2:47:08
Rank: #5323 (-189)
35K → 23M
8:50/mi
11:03 split
24M
2:56:01
Rank: #5507 (-184)
23M → 24M
8:53/mi
8:53 split
40K· 24.85 mi
3:03:24
Rank: #5575 (-68)
24M → 40K
8:38/mi
7:23 split
25.2M
3:06:39
Rank: #5595 (-20)
40K → 25.2M
9:25/mi
3:15 split
Finish· 26.22 mi
3:15:07
Rank: #5720 (-125)
25.2M → Finish
8:19/mi
8:28 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:57
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:46:10
Pace8:06 /mi
📊Positive Split: 19.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:2321:016:4621:01
6:46
-
10K
6.21 mi11:07:2542:036:4621:02
6:46
0:00
15K
9.32 mi11:28:231:03:016:4620:58
6:45
-0:01
20K
12.43 mi11:49:411:24:196:4721:18
6:51
+0:06
Half
13.11 mi11:54:191:28:576:474:38
6:47
-0:04
25K
15.53 mi12:11:181:45:566:4916:59
7:00
+0:13
30K
18.64 mi12:34:532:09:316:5723:35
7:35
+0:35
20M
20.00 mi12:46:232:21:017:0311:30
8:28
+0:53
21M
21.00 mi12:55:222:30:007:098:59
8:59
+0:31
35K
21.75 mi13:01:272:36:057:116:05
8:08
-0:51
23M
23.00 mi13:12:302:47:087:1611:03
8:50
+0:42
24M
24.00 mi13:21:232:56:017:208:53
8:53
+0:03
40K
24.85 mi13:28:463:03:247:237:23
8:38
-0:15
25.2M
25.20 mi13:32:013:06:397:243:15
9:25
+0:47
Finish
26.22 mi13:40:293:15:077:278:28
8:19
-1:06

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

6:45 /mi

Average Pace

7:27 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:31

66% of race

Time at Steady Pace

26:03

13% of race

Time at Slower Pace

39:33

20% of race

Average Pace: 7:26 /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 mi10:46:2321:016:4621:01
6:46
#5367
10K
6.21 mi11:07:2542:036:4621:02
6:46
#5137
15K
9.32 mi11:28:231:03:016:4620:58
6:45
#4834
20K
12.43 mi11:49:411:24:196:4721:18
6:51
#4618
Half
13.11 mi11:54:191:28:576:474:38
6:47
#4599
25K
15.53 mi12:11:181:45:566:4916:59
7:00
#4500
30K
18.64 mi12:34:532:09:316:5723:35
7:35
#4718
20M
20.00 mi12:46:232:21:017:0311:30
8:28
#4961
21M
21.00 mi12:55:222:30:007:098:59
8:59
#5086
35K
21.75 mi13:01:272:36:057:116:05
8:08
#5134
23M
23.00 mi13:12:302:47:087:1611:03
8:50
#5323
24M
24.00 mi13:21:232:56:017:208:53
8:53
#5507
40K
24.85 mi13:28:463:03:247:237:23
8:38
#5575
25.2M
25.20 mi13:32:013:06:397:243:15
9:25
#5595
Finish
26.22 mi13:40:293:15:077:278:28
8:19
#5720
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi5367494049404296(Top 17%)4018(Top 28%)4018(Top 181%)
10K6.21 mi3.10 mi5137+2304753+1874753+1874917(Top 19%)4560(Top 31%)4560(Top 206%)
15K9.32 mi3.11 mi4834+3034491+2624491+2624296(Top 17%)4018(Top 28%)4018(Top 181%)
20K12.43 mi3.11 mi4618+2164294+1974294+1974310(Top 17%)4000(Top 27%)4000(Top 180%)
Half13.11 mi0.68 mi4599+194275+194275+194473(Top 18%)4139(Top 28%)4139(Top 187%)
25K15.53 mi2.42 mi4500+994185+904185+904372(Top 17%)4008(Top 27%)4008(Top 181%)
30K18.64 mi3.11 mi4718-2184334-1494334-1495570(Top 22%)4726(Top 32%)4726(Top 213%)
20M20.00 mi1.36 mi4961-2434515-1814515-1819218(Top 36%)6626(Top 45%)6626(Top 299%)
21M21.00 mi1.00 mi5086-1254572-574572-578483(Top 33%)6026(Top 41%)6026(Top 272%)
35K21.75 mi0.75 mi5134-484594-224594-228531(Top 33%)6019(Top 41%)6019(Top 271%)
23M23.00 mi1.25 mi5323-1894692-984692-9810216(Top 40%)6675(Top 46%)6675(Top 301%)
24M24.00 mi1.00 mi5507-1844803-1114803-11111530(Top 45%)7316(Top 50%)7316(Top 330%)
40K24.85 mi0.85 mi5575-684823-204823-209015(Top 35%)5894(Top 40%)5894(Top 266%)
25.2M25.20 mi0.35 mi5595-204813+104813+108352(Top 33%)5495(Top 38%)5495(Top 248%)
Finish26.22 mi1.02 mi5720-1254872-594872-5910354(Top 41%)6649(Top 46%)6649(Top 300%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21story building
+97ft-345ft

Overall

4296

Males

4018

M45-49

4018

5K→10K

3.1 - 6.2 mi

Top 19%
×5story building
+79ft-138ft

Overall

4917

Males

4560

M45-49

4560

10K→15K

6.2 - 9.3 mi

Top 17%
×3story building
+67ft-78ft

Overall

4296

Males

4018

M45-49

4018

15K→20K

9.3 - 12.4 mi

Top 17%
×5story building
+106ft-86ft

Overall

4310

Males

4000

M45-49

4000

20K→Half

12.4 - 13.1 mi

Top 18%
×2story building
+19ft-37ft

Overall

4473

Males

4139

M45-49

4139

Half→25K

13.1 - 15.5 mi

Top 17%
×4story building
+66ft-88ft

Overall

4372

Males

4008

M45-49

4008

25K→30K

15.5 - 18.6 mi

Top 22%
×9story building
+181ft-148ft

Overall

5570

Males

4726

M45-49

4726

30K→20M

18.6 - 20.0 mi

Top 36%
×5story building
+64ft-50ft

Overall

9218

Males

6626

M45-49

6626

20M→21M

20.0 - 21.0 mi

Top 33%
×8story building
+106ft-24ft

Overall

8483

Males

6026

M45-49

6026

21M→35K

21.0 - 21.8 mi

Top 33%
×7story building
+17ft-86ft

Overall

8531

Males

6019

M45-49

6019

35K→23M

21.8 - 23.0 mi

Top 40%
×5story building
+23ft-63ft

Overall

10216

Males

6675

M45-49

6675

23M→24M

23.0 - 24.0 mi

Top 45%
×6story building
+12ft-82ft

Overall

11530

Males

7316

M45-49

7316

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9015

Males

5894

M45-49

5894

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8352

Males

5495

M45-49

5495

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

10354

Males

6649

M45-49

6649

Passing Analysis

Category:
Athletes Passed
1637
Passed By
1990
Net Change
-353
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5367
5K → 10K31686+230#5367#5137
10K → 15K33431+303#5137#4834
15K → 20K26852+216#4834#4618
20K → Half3819+19#4618#4599
Half → 25K201102+99#4599#4500
25K → 30K135353-218#4500#4718
30K → 20M39282-243#4718#4961
20M → 21M60185-125#4961#5086
21M → 35K4189-48#5086#5134
35K → 23M53242-189#5134#5323
23M → 24M39223-184#5323#5507
24M → 40K54122-68#5507#5575
40K → 25.2M2747-20#5575#5595
25.2M → Finish32157-125#5595#5720
TOTALS16371990-353
📊

Passing Visuals

Category:
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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