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BOSTON MARATHON 2025

Hongzhi Cai

Bib: 29219•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:56
Rank: #22370
Start → 5K
27:56 | 8:59/mi
10K· 6.21 mi
55:43
Rank: #22286 (+84)
5K → 10K
27:47 | 8:57/mi
15K· 9.32 mi
1:23:49
Rank: #22236 (+50)
10K → 15K
28:06 | 9:03/mi
20K· 12.43 mi
1:52:35
Rank: #22202 (+34)
15K → 20K
28:46 | 9:16/mi
Half· 13.11 mi
1:58:40
Rank: #22146 (+56)
20K → Half
6:05 | 8:55/mi
25K· 15.53 mi
2:21:09
Rank: #21957 (+189)
Half → 25K
22:29 | 9:16/mi
30K· 18.64 mi
2:51:54
Rank: #21862 (+95)
25K → 30K
30:45 | 9:54/mi
20M
3:05:18
Rank: #21738 (+124)
30K → 20M
13:24 | 9:52/mi
21M
3:16:06
Rank: #21676 (+62)
20M → 21M
10:48 | 10:48/mi
35K· 21.75 mi
3:23:01
Rank: #21600 (+76)
21M → 35K
6:55 | 9:15/mi
23M
3:35:34
Rank: #21520 (+80)
35K → 23M
12:33 | 10:01/mi
24M
3:44:55
Rank: #21396 (+124)
23M → 24M
9:21 | 9:21/mi
40K· 24.85 mi
3:53:18
Rank: #21326 (+70)
24M → 40K
8:23 | 9:48/mi
25.2M
3:56:58
Rank: #21295 (+31)
40K → 25.2M
3:40 | 10:38/mi
Finish· 26.22 mi
4:06:32
Rank: #21272 (+23)
25.2M → Finish
9:34 | 9:23/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:40
Pace9:03 /mi
2nd Half
Distance13.11 mi
Time2:07:52
Pace9:45 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:1527:568:5927:56
8:59
-
10K
6.21 mi12:13:0255:438:5827:47
8:57
-0:02
15K
9.32 mi12:41:081:23:499:0028:06
9:03
+0:06
20K
12.43 mi13:09:541:52:359:0428:46
9:16
+0:13
Half
13.11 mi13:15:591:58:409:036:05
8:55
-0:21
25K
15.53 mi13:38:282:21:099:0522:29
9:16
+0:21
30K
18.64 mi14:09:132:51:549:1330:45
9:54
+0:38
20M
20.00 mi14:22:373:05:189:1613:24
9:52
-0:02
21M
21.00 mi14:33:253:16:069:2010:48
10:48
+0:56
35K
21.75 mi14:40:203:23:019:206:55
9:15
-1:33
23M
23.00 mi14:52:533:35:349:2212:33
10:01
+0:46
24M
24.00 mi15:02:143:44:559:229:21
9:21
-0:40
40K
24.85 mi15:10:373:53:189:238:23
9:48
+0:27
25.2M
25.20 mi15:14:173:56:589:243:40
10:38
+0:50
Finish
26.22 mi15:23:514:06:329:259:34
9:23
-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

8:55 /mi

Average Pace

9:25 /mi

Slowest Pace

10:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:54

36% of race

Time at Steady Pace

1:17:05

31% of race

Time at Slower Pace

1:19:33

32% of race

Average Pace: 9:24 /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 mi11:45:1527:568:5927:56
8:59
#22370
10K
6.21 mi12:13:0255:438:5827:47
8:57
#22286
15K
9.32 mi12:41:081:23:499:0028:06
9:03
#22236
20K
12.43 mi13:09:541:52:359:0428:46
9:16
#22202
Half
13.11 mi13:15:591:58:409:036:05
8:55
#22146
25K
15.53 mi13:38:282:21:099:0522:29
9:16
#21957
30K
18.64 mi14:09:132:51:549:1330:45
9:54
#21862
20M
20.00 mi14:22:373:05:189:1613:24
9:52
#21738
21M
21.00 mi14:33:253:16:069:2010:48
10:48
#21676
35K
21.75 mi14:40:203:23:019:206:55
9:15
#21600
23M
23.00 mi14:52:533:35:349:2212:33
10:01
#21520
24M
24.00 mi15:02:143:44:559:229:21
9:21
#21396
40K
24.85 mi15:10:373:53:189:238:23
9:48
#21326
25.2M
25.20 mi15:14:173:56:589:243:40
10:38
#21295
Finish
26.22 mi15:23:514:06:329:259:34
9:23
#21272
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi22370134681346822225(Top 78%)13486(Top 84%)13486(Top 1071%)
10K6.21 mi3.10 mi22286+8413449+1913449+1922123(Top 78%)13395(Top 83%)13395(Top 1064%)
15K9.32 mi3.11 mi22236+5013458-913458-922225(Top 78%)13486(Top 84%)13486(Top 1071%)
20K12.43 mi3.11 mi22202+3413437+2113437+2122112(Top 78%)13405(Top 83%)13405(Top 1065%)
Half13.11 mi0.68 mi22146+5613410+2713410+2721452(Top 76%)13108(Top 81%)13108(Top 1041%)
25K15.53 mi2.42 mi21957+18913319+9113319+9121069(Top 74%)12879(Top 80%)12879(Top 1023%)
30K18.64 mi3.11 mi21862+9513256+6313256+6321293(Top 75%)12844(Top 80%)12844(Top 1020%)
20M20.00 mi1.36 mi21738+12413189+6713189+6720487(Top 72%)12365(Top 77%)12365(Top 982%)
21M21.00 mi1.00 mi21676+6213130+5913130+5920832(Top 73%)12414(Top 77%)12414(Top 986%)
35K21.75 mi0.75 mi21600+7613087+4313087+4319343(Top 68%)11669(Top 72%)11669(Top 927%)
23M23.00 mi1.25 mi21520+8013019+6813019+6820569(Top 72%)12187(Top 76%)12187(Top 968%)
24M24.00 mi1.00 mi21396+12412952+6712952+6719029(Top 67%)11431(Top 71%)11431(Top 908%)
40K24.85 mi0.85 mi21326+7012894+5812894+5819822(Top 70%)11721(Top 73%)11721(Top 931%)
25.2M25.20 mi0.35 mi21295+3112870+2412870+2419476(Top 69%)11550(Top 72%)11550(Top 917%)
Finish26.22 mi1.02 mi21272+2312844+2612844+2620738(Top 73%)12165(Top 76%)12165(Top 966%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21stories
+97ft-345ft

Overall

22225

Males

13486

M60-64

13486

5K→10K

3.1 - 6.2 mi

Top 78%
×5stories
+79ft-138ft

Overall

22123

Males

13395

M60-64

13395

10K→15K

6.2 - 9.3 mi

Top 78%
×3stories
+67ft-78ft

Overall

22225

Males

13486

M60-64

13486

15K→20K

9.3 - 12.4 mi

Top 78%
×5stories
+106ft-86ft

Overall

22112

Males

13405

M60-64

13405

20K→Half

12.4 - 13.1 mi

Top 76%
×2stories
+19ft-37ft

Overall

21452

Males

13108

M60-64

13108

Half→25K

13.1 - 15.5 mi

Top 74%
×4stories
+66ft-88ft

Overall

21069

Males

12879

M60-64

12879

25K→30K

15.5 - 18.6 mi

Top 75%
×9stories
+181ft-148ft

Overall

21293

Males

12844

M60-64

12844

30K→20M

18.6 - 20.0 mi

Top 72%
×5stories
+64ft-50ft

Overall

20487

Males

12365

M60-64

12365

20M→21M

20.0 - 21.0 mi

Top 73%
×8stories
+106ft-24ft

Overall

20832

Males

12414

M60-64

12414

21M→35K

21.0 - 21.8 mi

Top 68%
×7stories
+17ft-86ft

Overall

19343

Males

11669

M60-64

11669

35K→23M

21.8 - 23.0 mi

Top 72%
×5stories
+23ft-63ft

Overall

20569

Males

12187

M60-64

12187

23M→24M

23.0 - 24.0 mi

Top 67%
×6stories
+12ft-82ft

Overall

19029

Males

11431

M60-64

11431

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

19822

Males

11721

M60-64

11721

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19476

Males

11550

M60-64

11550

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

20738

Males

12165

M60-64

12165

Passing Analysis

Category:
Athletes Passed
2041
Passed By
943
Net Change
+1098
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22370
5K → 10K297213+84#22370#22286
10K → 15K209159+50#22286#22236
15K → 20K197163+34#22236#22202
20K → Half648+56#22202#22146
Half → 25K24152+189#22146#21957
25K → 30K240145+95#21957#21862
30K → 20M15632+124#21862#21738
20M → 21M11452+62#21738#21676
21M → 35K859+76#21676#21600
35K → 23M12242+80#21600#21520
23M → 24M1295+124#21520#21396
24M → 40K8616+70#21396#21326
40K → 25.2M4312+31#21326#21295
25.2M → Finish5835+23#21295#21272
TOTALS2041943+1098
📊

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