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BOSTON MARATHON 2023

Le Zhou

Bib: 29217•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:30
Rank: #15512
Start → 5K
25:30 | 8:12/mi
10K· 6.21 mi
50:33
Rank: #15336 (+176)
5K → 10K
25:03 | 8:04/mi
15K· 9.32 mi
1:15:47
Rank: #15341 (-5)
10K → 15K
25:14 | 8:07/mi
20K· 12.43 mi
1:41:06
Rank: #15130 (+211)
15K → 20K
25:19 | 8:09/mi
Half· 13.11 mi
1:46:33
Rank: #15071 (+59)
20K → Half
5:27 | 7:59/mi
25K· 15.53 mi
2:06:22
Rank: #14875 (+196)
Half → 25K
19:49 | 8:10/mi
30K· 18.64 mi
2:32:57
Rank: #14855 (+20)
25K → 30K
26:35 | 8:33/mi
20M
2:44:55
Rank: #14878 (-23)
30K → 20M
11:58 | 8:48/mi
21M
2:54:16
Rank: #14880 (-2)
20M → 21M
9:21 | 9:21/mi
35K· 21.75 mi
3:00:44
Rank: #14920 (-40)
21M → 35K
6:28 | 8:39/mi
23M
3:11:49
Rank: #14925 (-5)
35K → 23M
11:05 | 8:51/mi
24M
3:20:09
Rank: #14835 (+90)
23M → 24M
8:20 | 8:20/mi
40K· 24.85 mi
3:27:13
Rank: #14698 (+137)
24M → 40K
7:04 | 8:16/mi
25.2M
3:30:24
Rank: #14669 (+29)
40K → 25.2M
3:11 | 9:14/mi
Finish· 26.22 mi
3:38:32
Rank: #14565 (+104)
25.2M → Finish
8:08 | 7:59/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:33
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time1:51:59
Pace8:33 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:0925:308:1225:30
8:12
-
10K
6.21 mi12:08:1250:338:0825:03
8:04
-0:08
15K
9.32 mi12:33:261:15:478:0825:14
8:07
+0:03
20K
12.43 mi12:58:451:41:068:0825:19
8:09
+0:02
Half
13.11 mi13:04:121:46:338:085:27
7:59
-0:10
25K
15.53 mi13:24:012:06:228:0819:49
8:10
+0:11
30K
18.64 mi13:50:362:32:578:1226:35
8:33
+0:23
20M
20.00 mi14:02:342:44:558:1511:58
8:48
+0:15
21M
21.00 mi14:11:552:54:168:189:21
9:21
+0:33
35K
21.75 mi14:18:233:00:448:196:28
8:39
-0:42
23M
23.00 mi14:29:283:11:498:2011:05
8:51
+0:12
24M
24.00 mi14:37:483:20:098:208:20
8:20
-0:31
40K
24.85 mi14:44:523:27:138:207:04
8:16
-0:04
25.2M
25.20 mi14:48:033:30:248:213:11
9:14
+0:58
Finish
26.22 mi14:56:113:38:328:208:08
7:59
-1:15

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

7:59 /mi

Average Pace

8:20 /mi

Slowest Pace

9:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:02:57

84% of race

Time at Steady Pace

35:35

16% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:20 /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 mi11:43:0925:308:1225:30
8:12
#15512
10K
6.21 mi12:08:1250:338:0825:03
8:04
#15336
15K
9.32 mi12:33:261:15:478:0825:14
8:07
#15341
20K
12.43 mi12:58:451:41:068:0825:19
8:09
#15130
Half
13.11 mi13:04:121:46:338:085:27
7:59
#15071
25K
15.53 mi13:24:012:06:228:0819:49
8:10
#14875
30K
18.64 mi13:50:362:32:578:1226:35
8:33
#14855
20M
20.00 mi14:02:342:44:558:1511:58
8:48
#14878
21M
21.00 mi14:11:552:54:168:189:21
9:21
#14880
35K
21.75 mi14:18:233:00:448:196:28
8:39
#14920
23M
23.00 mi14:29:283:11:498:2011:05
8:51
#14925
24M
24.00 mi14:37:483:20:098:208:20
8:20
#14835
40K
24.85 mi14:44:523:27:138:207:04
8:16
#14698
25.2M
25.20 mi14:48:033:30:248:213:11
9:14
#14669
Finish
26.22 mi14:56:113:38:328:208:08
7:59
#14565
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi15512105171051715297(Top 57%)10429(Top 69%)10429(Top 463%)
10K6.21 mi3.10 mi15336+17610454+6310454+6315253(Top 57%)10403(Top 69%)10403(Top 462%)
15K9.32 mi3.11 mi15341-510442+1210442+1215297(Top 57%)10429(Top 69%)10429(Top 463%)
20K12.43 mi3.11 mi15130+21110344+9810344+9814575(Top 55%)10110(Top 67%)10110(Top 449%)
Half13.11 mi0.68 mi15071+5910321+2310321+2314230(Top 53%)10002(Top 66%)10002(Top 444%)
25K15.53 mi2.42 mi14875+19610223+9810223+9814040(Top 53%)9773(Top 64%)9773(Top 434%)
30K18.64 mi3.11 mi14855+2010186+3710186+3714648(Top 55%)9912(Top 65%)9912(Top 440%)
20M20.00 mi1.36 mi14878-2310167+1910167+1915440(Top 58%)10181(Top 67%)10181(Top 452%)
21M21.00 mi1.00 mi14880-210143+2410143+2415238(Top 57%)10031(Top 66%)10031(Top 445%)
35K21.75 mi0.75 mi14920-4010139+410139+416057(Top 60%)10307(Top 68%)10307(Top 458%)
23M23.00 mi1.25 mi14925-510118+2110118+2115265(Top 57%)9922(Top 65%)9922(Top 441%)
24M24.00 mi1.00 mi14835+9010065+5310065+5313422(Top 50%)9064(Top 60%)9064(Top 402%)
40K24.85 mi0.85 mi14698+1379980+859980+8511787(Top 44%)8228(Top 54%)8228(Top 365%)
25.2M25.20 mi0.35 mi14669+299958+229958+2213754(Top 52%)9122(Top 60%)9122(Top 405%)
Finish26.22 mi1.02 mi14565+1049910+489910+4811980(Top 45%)8278(Top 55%)8278(Top 368%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21stories
+97ft-345ft

Overall

15297

Males

10429

M45-49

10429

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

15253

Males

10403

M45-49

10403

10K→15K

6.2 - 9.3 mi

Top 57%
×3stories
+67ft-78ft

Overall

15297

Males

10429

M45-49

10429

15K→20K

9.3 - 12.4 mi

Top 55%
×5stories
+106ft-86ft

Overall

14575

Males

10110

M45-49

10110

20K→Half

12.4 - 13.1 mi

Top 53%
×2stories
+19ft-37ft

Overall

14230

Males

10002

M45-49

10002

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

14040

Males

9773

M45-49

9773

25K→30K

15.5 - 18.6 mi

Top 55%
×9stories
+181ft-148ft

Overall

14648

Males

9912

M45-49

9912

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

15440

Males

10181

M45-49

10181

20M→21M

20.0 - 21.0 mi

Top 57%
×8stories
+106ft-24ft

Overall

15238

Males

10031

M45-49

10031

21M→35K

21.0 - 21.8 mi

Top 60%
×7stories
+17ft-86ft

Overall

16057

Males

10307

M45-49

10307

35K→23M

21.8 - 23.0 mi

Top 57%
×5stories
+23ft-63ft

Overall

15265

Males

9922

M45-49

9922

23M→24M

23.0 - 24.0 mi

Top 50%
×6stories
+12ft-82ft

Overall

13422

Males

9064

M45-49

9064

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11787

Males

8228

M45-49

8228

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

13754

Males

9122

M45-49

9122

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2stories
+22ft-21ft

Overall

11980

Males

8278

M45-49

8278

Passing Analysis

Category:
Athletes Passed
2041
Passed By
1094
Net Change
+947
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15512
5K → 10K400224+176#15512#15336
10K → 15K180185-5#15336#15341
15K → 20K28574+211#15341#15130
20K → Half7415+59#15130#15071
Half → 25K23842+196#15071#14875
25K → 30K180160+20#14875#14855
30K → 20M7295-23#14855#14878
20M → 21M7981-2#14878#14880
21M → 35K3777-40#14880#14920
35K → 23M8085-5#14920#14925
23M → 24M11020+90#14925#14835
24M → 40K1469+137#14835#14698
40K → 25.2M378+29#14698#14669
25.2M → Finish12319+104#14669#14565
TOTALS20411094+947
📊

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