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BOSTON MARATHON 2023

Zhen-Cheng Zhang

Bib: 2310•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 18%
Gender (Male)
#0 / 15176
Top 29%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:24
Rank: #2657
Start → 5K
20:24 | 6:34/mi
10K· 6.21 mi
40:25
Rank: #2530 (+127)
5K → 10K
20:01 | 6:27/mi
15K· 9.32 mi
1:00:51
Rank: #2695 (-165)
10K → 15K
20:26 | 6:35/mi
20K· 12.43 mi
1:21:33
Rank: #2816 (-121)
15K → 20K
20:42 | 6:40/mi
Half· 13.11 mi
1:26:02
Rank: #2829 (-13)
20K → Half
4:29 | 6:34/mi
25K· 15.53 mi
1:42:40
Rank: #3061 (-232)
Half → 25K
16:38 | 6:52/mi
30K· 18.64 mi
2:05:09
Rank: #3561 (-500)
25K → 30K
22:29 | 7:14/mi
20M
2:15:03
Rank: #3719 (-158)
30K → 20M
9:54 | 7:17/mi
21M
2:22:44
Rank: #3834 (-115)
20M → 21M
7:41 | 7:41/mi
35K· 21.75 mi
2:28:04
Rank: #3944 (-110)
21M → 35K
5:20 | 7:08/mi
23M
2:37:33
Rank: #4188 (-244)
35K → 23M
9:29 | 7:34/mi
24M
2:45:26
Rank: #4509 (-321)
23M → 24M
7:53 | 7:53/mi
40K· 24.85 mi
2:52:00
Rank: #4601 (-92)
24M → 40K
6:34 | 7:41/mi
25.2M
2:54:52
Rank: #4644 (-43)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
3:02:18
Rank: #4682 (-38)
25.2M → Finish
7:26 | 7:18/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:02
Pace6:34 /mi
2nd Half
Distance13.11 mi
Time1:36:16
Pace7:21 /mi
📊Positive Split: 11.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:1620:246:3420:24
6:34
-
10K
6.21 mi10:41:1740:256:3020:01
6:27
-0:07
15K
9.32 mi11:01:431:00:516:3220:26
6:35
+0:08
20K
12.43 mi11:22:251:21:336:3420:42
6:40
+0:05
Half
13.11 mi11:26:541:26:026:344:29
6:34
-0:06
25K
15.53 mi11:43:321:42:406:3716:38
6:52
+0:18
30K
18.64 mi12:06:012:05:096:4322:29
7:14
+0:22
20M
20.00 mi12:15:552:15:036:459:54
7:17
+0:03
21M
21.00 mi12:23:362:22:446:487:41
7:41
+0:24
35K
21.75 mi12:28:562:28:046:485:20
7:08
-0:33
23M
23.00 mi12:38:252:37:336:519:29
7:34
+0:26
24M
24.00 mi12:46:182:45:266:547:53
7:53
+0:19
40K
24.85 mi12:52:522:52:006:556:34
7:41
-0:12
25.2M
25.20 mi12:55:442:54:526:562:52
8:19
+0:38
Finish
26.22 mi13:03:103:02:186:577:26
7:18
-1:01

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

6:27 /mi

Average Pace

6:57 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:40

56% of race

Time at Steady Pace

45:09

25% of race

Time at Slower Pace

34:29

19% of race

Average Pace: 6:57 /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 mi10:21:1620:246:3420:24
6:34
#2657
10K
6.21 mi10:41:1740:256:3020:01
6:27
#2530
15K
9.32 mi11:01:431:00:516:3220:26
6:35
#2695
20K
12.43 mi11:22:251:21:336:3420:42
6:40
#2816
Half
13.11 mi11:26:541:26:026:344:29
6:34
#2829
25K
15.53 mi11:43:321:42:406:3716:38
6:52
#3061
30K
18.64 mi12:06:012:05:096:4322:29
7:14
#3561
20M
20.00 mi12:15:552:15:036:459:54
7:17
#3719
21M
21.00 mi12:23:362:22:446:487:41
7:41
#3834
35K
21.75 mi12:28:562:28:046:485:20
7:08
#3944
23M
23.00 mi12:38:252:37:336:519:29
7:34
#4188
24M
24.00 mi12:46:182:45:266:547:53
7:53
#4509
40K
24.85 mi12:52:522:52:006:556:34
7:41
#4601
25.2M
25.20 mi12:55:442:54:526:562:52
8:19
#4644
Finish
26.22 mi13:03:103:02:186:577:26
7:18
#4682
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2657253125313118(Top 12%)2972(Top 20%)2972(Top 56%)
10K6.21 mi3.10 mi2530+1272413+1182413+1182464(Top 9%)2357(Top 16%)2357(Top 45%)
15K9.32 mi3.11 mi2695-1652574-1612574-1613118(Top 12%)2972(Top 20%)2972(Top 56%)
20K12.43 mi3.11 mi2816-1212690-1162690-1163292(Top 12%)3126(Top 21%)3126(Top 59%)
Half13.11 mi0.68 mi2829-132705-152705-153278(Top 12%)3128(Top 21%)3128(Top 59%)
25K15.53 mi2.42 mi3061-2322919-2142919-2144663(Top 18%)4338(Top 29%)4338(Top 82%)
30K18.64 mi3.11 mi3561-5003371-4523371-4525677(Top 21%)5128(Top 34%)5128(Top 97%)
20M20.00 mi1.36 mi3719-1583510-1393510-1395535(Top 21%)4947(Top 33%)4947(Top 94%)
21M21.00 mi1.00 mi3834-1153611-1013611-1015502(Top 21%)4828(Top 32%)4828(Top 91%)
35K21.75 mi0.75 mi3944-1103709-983709-986030(Top 23%)5238(Top 35%)5238(Top 99%)
23M23.00 mi1.25 mi4188-2443922-2133922-2136852(Top 26%)5717(Top 38%)5717(Top 108%)
24M24.00 mi1.00 mi4509-3214205-2834205-28310352(Top 39%)7561(Top 50%)7561(Top 143%)
40K24.85 mi0.85 mi4601-924279-744279-747781(Top 29%)6095(Top 40%)6095(Top 115%)
25.2M25.20 mi0.35 mi4644-434310-314310-318255(Top 31%)6287(Top 41%)6287(Top 119%)
Finish26.22 mi1.02 mi4682-384330-204330-207045(Top 26%)5584(Top 37%)5584(Top 106%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3118

Males

2972

M18-39

2972

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2464

Males

2357

M18-39

2357

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3118

Males

2972

M18-39

2972

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3292

Males

3126

M18-39

3126

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3278

Males

3128

M18-39

3128

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

4663

Males

4338

M18-39

4338

25K→30K

15.5 - 18.6 mi

Top 21%
×9stories
+181ft-148ft

Overall

5677

Males

5128

M18-39

5128

30K→20M

18.6 - 20.0 mi

Top 21%
×5stories
+64ft-50ft

Overall

5535

Males

4947

M18-39

4947

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

5502

Males

4828

M18-39

4828

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

6030

Males

5238

M18-39

5238

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

6852

Males

5717

M18-39

5717

23M→24M

23.0 - 24.0 mi

Top 39%
×6stories
+12ft-82ft

Overall

10352

Males

7561

M18-39

7561

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

7781

Males

6095

M18-39

6095

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8255

Males

6287

M18-39

6287

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

7045

Males

5584

M18-39

5584

Passing Analysis

Category:
Athletes Passed
489
Passed By
2514
Net Change
-2025
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2657
5K → 10K22598+127#2657#2530
10K → 15K19184-165#2530#2695
15K → 20K37158-121#2695#2816
20K → Half1427-13#2816#2829
Half → 25K16248-232#2829#3061
25K → 30K12512-500#3061#3561
30K → 20M24182-158#3561#3719
20M → 21M33148-115#3719#3834
21M → 35K13123-110#3834#3944
35K → 23M18262-244#3944#4188
23M → 24M7328-321#4188#4509
24M → 40K26118-92#4509#4601
40K → 25.2M851-43#4601#4644
25.2M → Finish3775-38#4644#4682
TOTALS4892514-2025
📊

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