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BOSTON MARATHON 2023

Chengliang Zhang

Bib: 3016•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 22%
Masters (Masters Men)
#0 / 9891
Top 9%
Division (M45-49)
#0 / 2252
Top 11%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:02
Rank: #4349
Start → 5K
21:02 | 6:46/mi
10K· 6.21 mi
41:45
Rank: #4180 (+169)
5K → 10K
20:43 | 6:40/mi
15K· 9.32 mi
1:02:37
Rank: #4188 (-8)
10K → 15K
20:52 | 6:43/mi
20K· 12.43 mi
1:23:34
Rank: #4112 (+76)
15K → 20K
20:57 | 6:45/mi
Half· 13.11 mi
1:28:09
Rank: #4118 (-6)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:44:29
Rank: #4020 (+98)
Half → 25K
16:20 | 6:44/mi
30K· 18.64 mi
2:05:49
Rank: #3847 (+173)
25K → 30K
21:20 | 6:52/mi
20M
2:15:08
Rank: #3750 (+97)
30K → 20M
9:19 | 6:51/mi
21M
2:22:25
Rank: #3715 (+35)
20M → 21M
7:17 | 7:17/mi
35K· 21.75 mi
2:27:23
Rank: #3673 (+42)
21M → 35K
4:58 | 6:38/mi
23M
2:36:06
Rank: #3618 (+55)
35K → 23M
8:43 | 6:58/mi
24M
2:42:48
Rank: #3581 (+37)
23M → 24M
6:42 | 6:42/mi
40K· 24.85 mi
2:48:45
Rank: #3556 (+25)
24M → 40K
5:57 | 6:58/mi
25.2M
2:51:18
Rank: #3547 (+9)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
2:58:09
Rank: #3544 (+3)
25.2M → Finish
6:51 | 6:43/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:09
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:30:00
Pace6:52 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:0221:026:4621:02
6:46
-
10K
6.21 mi10:44:4541:456:4320:43
6:40
-0:06
15K
9.32 mi11:05:371:02:376:4320:52
6:43
+0:03
20K
12.43 mi11:26:341:23:346:4320:57
6:45
+0:02
Half
13.11 mi11:31:091:28:096:434:35
6:43
-0:02
25K
15.53 mi11:47:291:44:296:4416:20
6:44
+0:01
30K
18.64 mi12:08:492:05:496:4521:20
6:52
+0:08
20M
20.00 mi12:18:082:15:086:459:19
6:51
-0:01
21M
21.00 mi12:25:252:22:256:477:17
7:17
+0:26
35K
21.75 mi12:30:232:27:236:474:58
6:38
-0:39
23M
23.00 mi12:39:062:36:066:478:43
6:58
+0:20
24M
24.00 mi12:45:482:42:486:476:42
6:42
-0:16
40K
24.85 mi12:51:452:48:456:475:57
6:58
+0:16
25.2M
25.20 mi12:54:182:51:186:482:33
7:24
+0:26
Finish
26.22 mi13:01:092:58:096:486:51
6:43
-0:41

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

6:38 /mi

Average Pace

6:48 /mi

Slowest Pace

7:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:55:36

99% of race

Time at Steady Pace

2:33

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:48 /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 mi10:24:0221:026:4621:02
6:46
#4349
10K
6.21 mi10:44:4541:456:4320:43
6:40
#4180
15K
9.32 mi11:05:371:02:376:4320:52
6:43
#4188
20K
12.43 mi11:26:341:23:346:4320:57
6:45
#4112
Half
13.11 mi11:31:091:28:096:434:35
6:43
#4118
25K
15.53 mi11:47:291:44:296:4416:20
6:44
#4020
30K
18.64 mi12:08:492:05:496:4521:20
6:52
#3847
20M
20.00 mi12:18:082:15:086:459:19
6:51
#3750
21M
21.00 mi12:25:252:22:256:477:17
7:17
#3715
35K
21.75 mi12:30:232:27:236:474:58
6:38
#3673
23M
23.00 mi12:39:062:36:066:478:43
6:58
#3618
24M
24.00 mi12:45:482:42:486:476:42
6:42
#3581
40K
24.85 mi12:51:452:48:456:475:57
6:58
#3556
25.2M
25.20 mi12:54:182:51:186:482:33
7:24
#3547
Finish
26.22 mi13:01:092:58:096:486:51
6:43
#3544
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi4349406040604271(Top 16%)4001(Top 26%)4001(Top 178%)
10K6.21 mi3.10 mi4180+1693918+1423918+1424029(Top 15%)3788(Top 25%)3788(Top 168%)
15K9.32 mi3.11 mi4188-83927-93927-94271(Top 16%)4001(Top 26%)4001(Top 178%)
20K12.43 mi3.11 mi4112+763859+683859+683913(Top 15%)3687(Top 24%)3687(Top 164%)
Half13.11 mi0.68 mi4118-63863-43863-44443(Top 17%)4135(Top 27%)4135(Top 184%)
25K15.53 mi2.42 mi4020+983782+813782+813643(Top 14%)3432(Top 23%)3432(Top 152%)
30K18.64 mi3.11 mi3847+1733627+1553627+1553435(Top 13%)3231(Top 21%)3231(Top 143%)
20M20.00 mi1.36 mi3750+973540+873540+873165(Top 12%)2971(Top 20%)2971(Top 132%)
21M21.00 mi1.00 mi3715+353506+343506+343517(Top 13%)3268(Top 22%)3268(Top 145%)
35K21.75 mi0.75 mi3673+423466+403466+403225(Top 12%)3010(Top 20%)3010(Top 134%)
23M23.00 mi1.25 mi3618+553417+493417+493574(Top 13%)3313(Top 22%)3313(Top 147%)
24M24.00 mi1.00 mi3581+373382+353382+353112(Top 12%)2887(Top 19%)2887(Top 128%)
40K24.85 mi0.85 mi3556+253357+253357+253611(Top 14%)3275(Top 22%)3275(Top 145%)
25.2M25.20 mi0.35 mi3547+93348+93348+93380(Top 13%)3063(Top 20%)3063(Top 136%)
Finish26.22 mi1.02 mi3544+33337+113337+113618(Top 14%)3232(Top 21%)3232(Top 144%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4271

Males

4001

M45-49

4001

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

4029

Males

3788

M45-49

3788

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4271

Males

4001

M45-49

4001

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

3913

Males

3687

M45-49

3687

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4443

Males

4135

M45-49

4135

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3643

Males

3432

M45-49

3432

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3435

Males

3231

M45-49

3231

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3165

Males

2971

M45-49

2971

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3517

Males

3268

M45-49

3268

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3225

Males

3010

M45-49

3010

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3574

Males

3313

M45-49

3313

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3112

Males

2887

M45-49

2887

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3611

Males

3275

M45-49

3275

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3380

Males

3063

M45-49

3063

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

3618

Males

3232

M45-49

3232

Passing Analysis

Category:
Athletes Passed
1447
Passed By
642
Net Change
+805
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4349
5K → 10K307138+169#4349#4180
10K → 15K129137-8#4180#4188
15K → 20K13357+76#4188#4112
20K → Half2026-6#4112#4118
Half → 25K12628+98#4118#4020
25K → 30K20936+173#4020#3847
30K → 20M11013+97#3847#3750
20M → 21M7641+35#3750#3715
21M → 35K497+42#3715#3673
35K → 23M9035+55#3673#3618
23M → 24M6427+37#3618#3581
24M → 40K5429+25#3581#3556
40K → 25.2M2213+9#3556#3547
25.2M → Finish5855+3#3547#3544
TOTALS1447642+805
📊

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