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BOSTON MARATHON 2023

Cheng Zhong

Bib: 4248•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 5%
Gender (Male)
#0 / 15176
Top 9%
Masters (Masters Men)
#0 / 9891
Top 2%
Division (M40-44)
#0 / 2241
Top 7%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:07
Rank: #1028
Start → 5K
19:07 | 6:09/mi
10K· 6.21 mi
38:35
Rank: #1227 (-199)
5K → 10K
19:28 | 6:16/mi
15K· 9.32 mi
58:17
Rank: #1393 (-166)
10K → 15K
19:42 | 6:20/mi
20K· 12.43 mi
1:18:13
Rank: #1491 (-98)
15K → 20K
19:56 | 6:25/mi
Half· 13.11 mi
1:22:28
Rank: #1485 (+6)
20K → Half
4:15 | 6:14/mi
25K· 15.53 mi
1:37:54
Rank: #1494 (-9)
Half → 25K
15:26 | 6:22/mi
30K· 18.64 mi
1:58:03
Rank: #1470 (+24)
25K → 30K
20:09 | 6:29/mi
20M
2:06:52
Rank: #1458 (+12)
30K → 20M
8:49 | 6:29/mi
21M
2:13:44
Rank: #1452 (+6)
20M → 21M
6:52 | 6:52/mi
35K· 21.75 mi
2:18:30
Rank: #1459 (-7)
21M → 35K
4:46 | 6:22/mi
23M
2:26:39
Rank: #1436 (+23)
35K → 23M
8:09 | 6:31/mi
24M
2:32:58
Rank: #1412 (+24)
23M → 24M
6:19 | 6:19/mi
40K· 24.85 mi
2:38:34
Rank: #1398 (+14)
24M → 40K
5:36 | 6:33/mi
25.2M
2:41:00
Rank: #1407 (-9)
40K → 25.2M
2:26 | 7:03/mi
Finish· 26.22 mi
2:47:42
Rank: #1432 (-25)
25.2M → Finish
6:42 | 6:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:22:28
Pace6:17 /mi
2nd Half
Distance13.11 mi
Time1:25:14
Pace6:30 /mi
📊Positive Split: 3.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:44:1119:076:0919:07
6:09
-
10K
6.21 mi11:03:3938:356:1319:28
6:16
+0:07
15K
9.32 mi11:23:2158:176:1519:42
6:20
+0:04
20K
12.43 mi11:43:171:18:136:1819:56
6:25
+0:05
Half
13.11 mi11:47:321:22:286:174:15
6:14
-0:11
25K
15.53 mi12:02:581:37:546:1815:26
6:22
+0:08
30K
18.64 mi12:23:071:58:036:2020:09
6:29
+0:07
20M
20.00 mi12:31:562:06:526:218:49
6:29
0:00
21M
21.00 mi12:38:482:13:446:226:52
6:52
+0:23
35K
21.75 mi12:43:342:18:306:224:46
6:22
-0:30
23M
23.00 mi12:51:432:26:396:238:09
6:31
+0:09
24M
24.00 mi12:58:022:32:586:226:19
6:19
-0:12
40K
24.85 mi13:03:382:38:346:235:36
6:33
+0:14
25.2M
25.20 mi13:06:042:41:006:232:26
7:03
+0:30
Finish
26.22 mi13:12:462:47:426:246:42
6:34
-0:29

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

6:09 /mi

Average Pace

6:24 /mi

Slowest Pace

7:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:38:24

94% of race

Time at Steady Pace

9:18

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:24 /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 mi10:44:1119:076:0919:07
6:09
#1028
10K
6.21 mi11:03:3938:356:1319:28
6:16
#1227
15K
9.32 mi11:23:2158:176:1519:42
6:20
#1393
20K
12.43 mi11:43:171:18:136:1819:56
6:25
#1491
Half
13.11 mi11:47:321:22:286:174:15
6:14
#1485
25K
15.53 mi12:02:581:37:546:1815:26
6:22
#1494
30K
18.64 mi12:23:071:58:036:2020:09
6:29
#1470
20M
20.00 mi12:31:562:06:526:218:49
6:29
#1458
21M
21.00 mi12:38:482:13:446:226:52
6:52
#1452
35K
21.75 mi12:43:342:18:306:224:46
6:22
#1459
23M
23.00 mi12:51:432:26:396:238:09
6:31
#1436
24M
24.00 mi12:58:022:32:586:226:19
6:19
#1412
40K
24.85 mi13:03:382:38:346:235:36
6:33
#1398
25.2M
25.20 mi13:06:042:41:006:232:26
7:03
#1407
Finish
26.22 mi13:12:462:47:426:246:42
6:34
#1432
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi10289729721824(Top 7%)1747(Top 12%)1747(Top 78%)
10K6.21 mi3.10 mi1227-1991162-1901162-1901611(Top 6%)1538(Top 10%)1538(Top 69%)
15K9.32 mi3.11 mi1393-1661328-1661328-1661824(Top 7%)1747(Top 12%)1747(Top 78%)
20K12.43 mi3.11 mi1491-981424-961424-961857(Top 7%)1780(Top 12%)1780(Top 79%)
Half13.11 mi0.68 mi1485+61418+61418+61494(Top 6%)1430(Top 9%)1430(Top 64%)
25K15.53 mi2.42 mi1494-91427-91427-91577(Top 6%)1511(Top 10%)1511(Top 67%)
30K18.64 mi3.11 mi1470+241405+221405+221512(Top 6%)1447(Top 10%)1447(Top 65%)
20M20.00 mi1.36 mi1458+121393+121393+121398(Top 5%)1333(Top 9%)1333(Top 59%)
21M21.00 mi1.00 mi1452+61387+61387+61633(Top 6%)1554(Top 10%)1554(Top 69%)
35K21.75 mi0.75 mi1459-71394-71394-71817(Top 7%)1723(Top 11%)1723(Top 77%)
23M23.00 mi1.25 mi1436+231370+241370+241445(Top 5%)1372(Top 9%)1372(Top 61%)
24M24.00 mi1.00 mi1412+241347+231347+231380(Top 5%)1306(Top 9%)1306(Top 58%)
40K24.85 mi0.85 mi1398+141333+141333+141716(Top 6%)1614(Top 11%)1614(Top 72%)
25.2M25.20 mi0.35 mi1407-91341-81341-81887(Top 7%)1770(Top 12%)1770(Top 79%)
Finish26.22 mi1.02 mi1432-251365-241365-242824(Top 11%)2561(Top 17%)2561(Top 114%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21stories
+97ft-345ft

Overall

1824

Males

1747

M40-44

1747

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1611

Males

1538

M40-44

1538

10K→15K

6.2 - 9.3 mi

Top 7%
×3stories
+67ft-78ft

Overall

1824

Males

1747

M40-44

1747

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1857

Males

1780

M40-44

1780

20K→Half

12.4 - 13.1 mi

Top 6%
×2stories
+19ft-37ft

Overall

1494

Males

1430

M40-44

1430

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1577

Males

1511

M40-44

1511

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1512

Males

1447

M40-44

1447

30K→20M

18.6 - 20.0 mi

Top 5%
×5stories
+64ft-50ft

Overall

1398

Males

1333

M40-44

1333

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1633

Males

1554

M40-44

1554

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1817

Males

1723

M40-44

1723

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1445

Males

1372

M40-44

1372

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1380

Males

1306

M40-44

1306

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1716

Males

1614

M40-44

1614

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1887

Males

1770

M40-44

1770

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

2824

Males

2561

M40-44

2561

Passing Analysis

Category:
Athletes Passed
336
Passed By
740
Net Change
-404
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1028
5K → 10K6205-199#1028#1227
10K → 15K11177-166#1227#1393
15K → 20K21119-98#1393#1491
20K → Half137+6#1491#1485
Half → 25K3746-9#1485#1494
25K → 30K6339+24#1494#1470
30K → 20M2816+12#1470#1458
20M → 21M2418+6#1458#1452
21M → 35K1320-7#1452#1459
35K → 23M3714+23#1459#1436
23M → 24M328+24#1436#1412
24M → 40K2713+14#1412#1398
40K → 25.2M716-9#1398#1407
25.2M → Finish1742-25#1407#1432
TOTALS336740-404
📊

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