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BOSTON MARATHON 2023

Zuo Zhang

Bib: 10230•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 38%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 42%
Division (M50-54)
#0 / 2052
Top 42%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:45
Rank: #8256
Start → 5K
22:45 | 7:19/mi
10K· 6.21 mi
46:35
Rank: #9991 (-1735)
5K → 10K
23:50 | 7:40/mi
15K· 9.32 mi
1:10:37
Rank: #10723 (-732)
10K → 15K
24:02 | 7:44/mi
20K· 12.43 mi
1:34:44
Rank: #10897 (-174)
15K → 20K
24:07 | 7:46/mi
Half· 13.11 mi
1:39:56
Rank: #10914 (-17)
20K → Half
5:12 | 7:37/mi
25K· 15.53 mi
1:58:53
Rank: #10923 (-9)
Half → 25K
18:57 | 7:49/mi
30K· 18.64 mi
2:23:06
Rank: #10581 (+342)
25K → 30K
24:13 | 7:48/mi
20M
2:33:46
Rank: #10464 (+117)
30K → 20M
10:40 | 7:51/mi
21M
2:42:52
Rank: #10653 (-189)
20M → 21M
9:06 | 9:06/mi
35K· 21.75 mi
2:48:34
Rank: #10576 (+77)
21M → 35K
5:42 | 7:37/mi
23M
2:58:31
Rank: #10486 (+90)
35K → 23M
9:57 | 7:57/mi
24M
3:06:07
Rank: #10380 (+106)
23M → 24M
7:36 | 7:36/mi
40K· 24.85 mi
3:12:45
Rank: #10275 (+105)
24M → 40K
6:38 | 7:45/mi
25.2M
3:15:39
Rank: #10235 (+40)
40K → 25.2M
2:54 | 8:25/mi
Finish· 26.22 mi
3:23:27
Rank: #10180 (+55)
25.2M → Finish
7:48 | 7:39/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:56
Pace7:37 /mi
2nd Half
Distance13.11 mi
Time1:43:31
Pace7:54 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:37:5022:457:1922:45
7:19
-
10K
6.21 mi12:01:4046:357:3023:50
7:40
+0:21
15K
9.32 mi12:25:421:10:377:3524:02
7:44
+0:04
20K
12.43 mi12:49:491:34:447:3724:07
7:46
+0:02
Half
13.11 mi12:55:011:39:567:375:12
7:37
-0:09
25K
15.53 mi13:13:581:58:537:3918:57
7:49
+0:12
30K
18.64 mi13:38:112:23:067:4124:13
7:48
-0:01
20M
20.00 mi13:48:512:33:467:4110:40
7:51
+0:03
21M
21.00 mi13:57:572:42:527:459:06
9:06
+1:15
35K
21.75 mi14:03:392:48:347:455:42
7:37
-1:29
23M
23.00 mi14:13:362:58:317:469:57
7:57
+0:20
24M
24.00 mi14:21:123:06:077:457:36
7:36
-0:21
40K
24.85 mi14:27:503:12:457:456:38
7:45
+0:09
25.2M
25.20 mi14:30:443:15:397:462:54
8:25
+0:40
Finish
26.22 mi14:38:323:23:277:467:48
7:39
-0:46

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

7:19 /mi

Average Pace

7:46 /mi

Slowest Pace

9:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

22:45

11% of race

Time at Steady Pace

2:48:42

83% of race

Time at Slower Pace

12:00

6% of race

Average Pace: 7:46 /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 mi11:37:5022:457:1922:45
7:19
#8256
10K
6.21 mi12:01:4046:357:3023:50
7:40
#9991
15K
9.32 mi12:25:421:10:377:3524:02
7:44
#10723
20K
12.43 mi12:49:491:34:447:3724:07
7:46
#10897
Half
13.11 mi12:55:011:39:567:375:12
7:37
#10914
25K
15.53 mi13:13:581:58:537:3918:57
7:49
#10923
30K
18.64 mi13:38:112:23:067:4124:13
7:48
#10581
20M
20.00 mi13:48:512:33:467:4110:40
7:51
#10464
21M
21.00 mi13:57:572:42:527:459:06
9:06
#10653
35K
21.75 mi14:03:392:48:347:455:42
7:37
#10576
23M
23.00 mi14:13:362:58:317:469:57
7:57
#10486
24M
24.00 mi14:21:123:06:077:457:36
7:36
#10380
40K
24.85 mi14:27:503:12:457:456:38
7:45
#10275
25.2M
25.20 mi14:30:443:15:397:462:54
8:25
#10235
Finish
26.22 mi14:38:323:23:277:467:48
7:39
#10180
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi82567140714012140(Top 46%)9146(Top 60%)9146(Top 446%)
10K6.21 mi3.10 mi9991-17358142-10028142-100211978(Top 45%)9099(Top 60%)9099(Top 443%)
15K9.32 mi3.11 mi10723-7328526-3848526-38412140(Top 46%)9146(Top 60%)9146(Top 446%)
20K12.43 mi3.11 mi10897-1748595-698595-6911401(Top 43%)8748(Top 58%)8748(Top 426%)
Half13.11 mi0.68 mi10914-178604-98604-911135(Top 42%)8667(Top 57%)8667(Top 422%)
25K15.53 mi2.42 mi10923-98593+118593+1111195(Top 42%)8585(Top 57%)8585(Top 418%)
30K18.64 mi3.11 mi10581+3428372+2218372+2219317(Top 35%)7466(Top 49%)7466(Top 364%)
20M20.00 mi1.36 mi10464+1178299+738299+739215(Top 35%)7319(Top 48%)7319(Top 357%)
21M21.00 mi1.00 mi10653-1898361-628361-6213953(Top 52%)9466(Top 62%)9466(Top 461%)
35K21.75 mi0.75 mi10576+778298+638298+639393(Top 35%)7298(Top 48%)7298(Top 356%)
23M23.00 mi1.25 mi10486+908228+708228+709381(Top 35%)7167(Top 47%)7167(Top 349%)
24M24.00 mi1.00 mi10380+1068150+788150+788400(Top 32%)6562(Top 43%)6562(Top 320%)
40K24.85 mi0.85 mi10275+1058074+768074+768380(Top 31%)6486(Top 43%)6486(Top 316%)
25.2M25.20 mi0.35 mi10235+408039+358039+358936(Top 34%)6709(Top 44%)6709(Top 327%)
Finish26.22 mi1.02 mi10180+557979+607979+609639(Top 36%)7090(Top 47%)7090(Top 346%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21stories
+97ft-345ft

Overall

12140

Males

9146

M50-54

9146

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

11978

Males

9099

M50-54

9099

10K→15K

6.2 - 9.3 mi

Top 46%
×3stories
+67ft-78ft

Overall

12140

Males

9146

M50-54

9146

15K→20K

9.3 - 12.4 mi

Top 43%
×5stories
+106ft-86ft

Overall

11401

Males

8748

M50-54

8748

20K→Half

12.4 - 13.1 mi

Top 42%
×2stories
+19ft-37ft

Overall

11135

Males

8667

M50-54

8667

Half→25K

13.1 - 15.5 mi

Top 42%
×4stories
+66ft-88ft

Overall

11195

Males

8585

M50-54

8585

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9317

Males

7466

M50-54

7466

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9215

Males

7319

M50-54

7319

20M→21M

20.0 - 21.0 mi

Top 52%
×8stories
+106ft-24ft

Overall

13953

Males

9466

M50-54

9466

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

9393

Males

7298

M50-54

7298

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9381

Males

7167

M50-54

7167

23M→24M

23.0 - 24.0 mi

Top 32%
×6stories
+12ft-82ft

Overall

8400

Males

6562

M50-54

6562

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8380

Males

6486

M50-54

6486

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

8936

Males

6709

M50-54

6709

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2stories
+22ft-21ft

Overall

9639

Males

7090

M50-54

7090

Passing Analysis

Category:
Athletes Passed
1481*
Passed By
3403
Net Change
-1924
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8256
5K → 10K131748-1735#8256#9991
10K → 15K34764-732#9991#10723
15K → 20K111285-174#10723#10897
20K → Half2037-17#10897#10914
Half → 25K120129-9#10914#10923
25K → 30K37836+342#10923#10581
30K → 20M137*20+117#10581#10464
20M → 21M35224-189#10464#10653
21M → 35K9720+77#10653#10576
35K → 23M12939+90#10576#10486
23M → 24M12115+106#10486#10380
24M → 40K13025+105#10380#10275
40K → 25.2M57*17+40#10275#10235
25.2M → Finish9944+55#10235#10180
TOTALS1481*3403-1924

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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