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BOSTON MARATHON 2025

Chengcheng Zhao

Bib: 4922•M

NJ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 18%
Gender (Male)
#0 / 16105
Top 29%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:22
Rank: #6875
Start → 5K
21:22 | 6:53/mi
10K· 6.21 mi
42:14
Rank: #6253 (+622)
5K → 10K
20:52 | 6:43/mi
15K· 9.32 mi
1:03:03
Rank: #5858 (+395)
10K → 15K
20:49 | 6:42/mi
20K· 12.43 mi
1:27:37
Rank: #7823 (-1965)
15K → 20K
24:34 | 7:54/mi
Half· 13.11 mi
1:31:57
Rank: #7577 (+246)
20K → Half
4:20 | 6:21/mi
25K· 15.53 mi
1:47:59
Rank: #6937 (+640)
Half → 25K
16:02 | 6:37/mi
30K· 18.64 mi
2:09:06
Rank: #6145 (+792)
25K → 30K
21:07 | 6:48/mi
20M
2:18:29
Rank: #5898 (+247)
30K → 20M
9:23 | 6:54/mi
21M
2:25:36
Rank: #5661 (+237)
20M → 21M
7:07 | 7:07/mi
35K· 21.75 mi
2:30:42
Rank: #5589 (+72)
21M → 35K
5:06 | 6:49/mi
23M
2:39:26
Rank: #5395 (+194)
35K → 23M
8:44 | 6:59/mi
24M
2:46:22
Rank: #5305 (+90)
23M → 24M
6:56 | 6:56/mi
40K· 24.85 mi
2:52:22
Rank: #5213 (+92)
24M → 40K
6:00 | 7:01/mi
25.2M
2:55:00
Rank: #5174 (+39)
40K → 25.2M
2:38 | 7:38/mi
Finish· 26.22 mi
3:01:47
Rank: #5064 (+110)
25.2M → Finish
6:47 | 6:39/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:31:57
Pace7:01 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:29:50
Pace6:51 /mi
📊Negative Split: 2.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:0221:226:5321:22
6:53
-
10K
6.21 mi10:46:5442:146:4820:52
6:43
-0:10
15K
9.32 mi11:07:431:03:036:4620:49
6:42
-0:01
20K
12.43 mi11:32:171:27:377:0324:34
7:54
+1:12
Half
13.11 mi11:36:371:31:577:014:20
6:21
-1:33
25K
15.53 mi11:52:391:47:596:5716:02
6:37
+0:16
30K
18.64 mi12:13:462:09:066:5621:07
6:48
+0:11
20M
20.00 mi12:23:092:18:296:559:23
6:54
+0:06
21M
21.00 mi12:30:162:25:366:567:07
7:07
+0:13
35K
21.75 mi12:35:222:30:426:565:06
6:49
-0:18
23M
23.00 mi12:44:062:39:266:568:44
6:59
+0:10
24M
24.00 mi12:51:022:46:226:566:56
6:56
-0:03
40K
24.85 mi12:57:022:52:226:566:00
7:01
+0:05
25.2M
25.20 mi12:59:402:55:006:572:38
7:38
+0:37
Finish
26.22 mi13:06:273:01:476:566:47
6:39
-0:59

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

6:21 /mi

Average Pace

6:56 /mi

Slowest Pace

7:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

27:09

15% of race

Time at Steady Pace

2:00:19

66% of race

Time at Slower Pace

34:19

19% of race

Average Pace: 6:56 /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 mi10:26:0221:226:5321:22
6:53
#6875
10K
6.21 mi10:46:5442:146:4820:52
6:43
#6253
15K
9.32 mi11:07:431:03:036:4620:49
6:42
#5858
20K
12.43 mi11:32:171:27:377:0324:34
7:54
#7823
Half
13.11 mi11:36:371:31:577:014:20
6:21
#7577
25K
15.53 mi11:52:391:47:596:5716:02
6:37
#6937
30K
18.64 mi12:13:462:09:066:5621:07
6:48
#6145
20M
20.00 mi12:23:092:18:296:559:23
6:54
#5898
21M
21.00 mi12:30:162:25:366:567:07
7:07
#5661
35K
21.75 mi12:35:222:30:426:565:06
6:49
#5589
23M
23.00 mi12:44:062:39:266:568:44
6:59
#5395
24M
24.00 mi12:51:022:46:226:566:56
6:56
#5305
40K
24.85 mi12:57:022:52:226:566:00
7:01
#5213
25.2M
25.20 mi12:59:402:55:006:572:38
7:38
#5174
Finish
26.22 mi13:06:273:01:476:566:47
6:39
#5064
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6875621162115062(Top 18%)4697(Top 29%)4697(Top 83%)
10K6.21 mi3.10 mi6253+6225724+4875724+4875478(Top 19%)5053(Top 31%)5053(Top 90%)
15K9.32 mi3.11 mi5858+3955376+3485376+3485062(Top 18%)4697(Top 29%)4697(Top 83%)
20K12.43 mi3.11 mi7823-19656838-14626838-146214126(Top 50%)9915(Top 62%)9915(Top 176%)
Half13.11 mi0.68 mi7577+2466678+1606678+1602803(Top 10%)2679(Top 17%)2679(Top 47%)
25K15.53 mi2.42 mi6937+6406208+4706208+4703544(Top 12%)3341(Top 21%)3341(Top 59%)
30K18.64 mi3.11 mi6145+7925543+6655543+6653429(Top 12%)3195(Top 20%)3195(Top 57%)
20M20.00 mi1.36 mi5898+2475342+2015342+2013551(Top 13%)3273(Top 20%)3273(Top 58%)
21M21.00 mi1.00 mi5661+2375149+1935149+1932763(Top 10%)2566(Top 16%)2566(Top 45%)
35K21.75 mi0.75 mi5589+725083+665083+664198(Top 15%)3751(Top 23%)3751(Top 66%)
23M23.00 mi1.25 mi5395+1944912+1714912+1713612(Top 13%)3268(Top 20%)3268(Top 58%)
24M24.00 mi1.00 mi5305+904829+834829+834251(Top 15%)3732(Top 23%)3732(Top 66%)
40K24.85 mi0.85 mi5213+924741+884741+884003(Top 14%)3491(Top 22%)3491(Top 62%)
25.2M25.20 mi0.35 mi5174+394703+384703+384010(Top 14%)3426(Top 21%)3426(Top 61%)
Finish26.22 mi1.02 mi5064+1104600+1034600+1033636(Top 13%)3162(Top 20%)3162(Top 56%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

5062

Males

4697

M18-39

4697

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5478

Males

5053

M18-39

5053

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

5062

Males

4697

M18-39

4697

15K→20K

9.3 - 12.4 mi

Top 50%
×5stories
+106ft-86ft

Overall

14126

Males

9915

M18-39

9915

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2803

Males

2679

M18-39

2679

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3544

Males

3341

M18-39

3341

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3429

Males

3195

M18-39

3195

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3551

Males

3273

M18-39

3273

20M→21M

20.0 - 21.0 mi

Top 10%
×8stories
+106ft-24ft

Overall

2763

Males

2566

M18-39

2566

21M→35K

21.0 - 21.8 mi

Top 15%
×7stories
+17ft-86ft

Overall

4198

Males

3751

M18-39

3751

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3612

Males

3268

M18-39

3268

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

4251

Males

3732

M18-39

3732

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

4003

Males

3491

M18-39

3491

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

4010

Males

3426

M18-39

3426

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2stories
+22ft-21ft

Overall

3636

Males

3162

M18-39

3162

Passing Analysis

Category:
Athletes Passed
3858
Passed By
2047
Net Change
+1811
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6875
5K → 10K64220+622#6875#6253
10K → 15K41015+395#6253#5858
15K → 20K31968-1965#5858#7823
20K → Half2460+246#7823#7577
Half → 25K6400+640#7577#6937
25K → 30K7920+792#6937#6145
30K → 20M2492+247#6145#5898
20M → 21M2370+237#5898#5661
21M → 35K764+72#5661#5589
35K → 23M2017+194#5589#5395
23M → 24M10414+90#5395#5305
24M → 40K1019+92#5305#5213
40K → 25.2M423+39#5213#5174
25.2M → Finish1155+110#5174#5064
TOTALS38582047+1811
📊

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