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BOSTON MARATHON 2025

Hongtao Zhang

Bib: 12424•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:23
Rank: #12462
Start → 5K
23:23 | 7:32/mi
10K· 6.21 mi
47:33
Rank: #13518 (-1056)
5K → 10K
24:10 | 7:47/mi
15K· 9.32 mi
1:12:20
Rank: #14297 (-779)
10K → 15K
24:47 | 7:59/mi
20K· 12.43 mi
1:38:12
Rank: #15114 (-817)
15K → 20K
25:52 | 8:20/mi
Half· 13.11 mi
1:43:46
Rank: #15224 (-110)
20K → Half
5:34 | 8:10/mi
25K· 15.53 mi
2:04:43
Rank: #15789 (-565)
Half → 25K
20:57 | 8:38/mi
30K· 18.64 mi
2:34:22
Rank: #16722 (-933)
25K → 30K
29:39 | 9:33/mi
20M
2:48:23
Rank: #17258 (-536)
30K → 20M
14:01 | 10:19/mi
21M
2:59:56
Rank: #17813 (-555)
20M → 21M
11:33 | 11:33/mi
35K· 21.75 mi
3:07:59
Rank: #18194 (-381)
21M → 35K
8:03 | 10:46/mi
23M
3:21:47
Rank: #18717 (-523)
35K → 23M
13:48 | 11:01/mi
24M
3:32:31
Rank: #19065 (-348)
23M → 24M
10:44 | 10:44/mi
40K· 24.85 mi
3:41:40
Rank: #19254 (-189)
24M → 40K
9:09 | 10:42/mi
25.2M
3:45:33
Rank: #19299 (-45)
40K → 25.2M
3:53 | 11:16/mi
Finish· 26.22 mi
3:55:37
Rank: #19478 (-179)
25.2M → Finish
10:04 | 9:53/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:46
Pace7:55 /mi
2nd Half
Distance13.11 mi
Time2:11:51
Pace10:03 /mi
📊Positive Split: 27.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:2123:237:3223:23
7:32
-
10K
6.21 mi11:15:3147:337:3924:10
7:47
+0:15
15K
9.32 mi11:40:181:12:207:4624:47
7:59
+0:12
20K
12.43 mi12:06:101:38:127:5425:52
8:20
+0:21
Half
13.11 mi12:11:441:43:467:555:34
8:10
-0:10
25K
15.53 mi12:32:412:04:438:0220:57
8:38
+0:28
30K
18.64 mi13:02:202:34:228:1729:39
9:33
+0:55
20M
20.00 mi13:16:212:48:238:2514:01
10:19
+0:46
21M
21.00 mi13:27:542:59:568:3411:33
11:33
+1:14
35K
21.75 mi13:35:573:07:598:398:03
10:46
-0:47
23M
23.00 mi13:49:453:21:478:4613:48
11:01
+0:15
24M
24.00 mi14:00:293:32:318:5110:44
10:44
-0:17
40K
24.85 mi14:09:383:41:408:559:09
10:42
-0:02
25.2M
25.20 mi14:13:313:45:338:573:53
11:16
+0:34
Finish
26.22 mi14:23:353:55:379:0010:04
9:53
-1:23

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

7:32 /mi

Average Pace

9:00 /mi

Slowest Pace

11:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:43

53% of race

Time at Steady Pace

53:44

23% of race

Time at Slower Pace

57:10

24% of race

Average Pace: 8:59 /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 mi10:51:2123:237:3223:23
7:32
#12462
10K
6.21 mi11:15:3147:337:3924:10
7:47
#13518
15K
9.32 mi11:40:181:12:207:4624:47
7:59
#14297
20K
12.43 mi12:06:101:38:127:5425:52
8:20
#15114
Half
13.11 mi12:11:441:43:467:555:34
8:10
#15224
25K
15.53 mi12:32:412:04:438:0220:57
8:38
#15789
30K
18.64 mi13:02:202:34:228:1729:39
9:33
#16722
20M
20.00 mi13:16:212:48:238:2514:01
10:19
#17258
21M
21.00 mi13:27:542:59:568:3411:33
11:33
#17813
35K
21.75 mi13:35:573:07:598:398:03
10:46
#18194
23M
23.00 mi13:49:453:21:478:4613:48
11:01
#18717
24M
24.00 mi14:00:293:32:318:5110:44
10:44
#19065
40K
24.85 mi14:09:383:41:408:559:09
10:42
#19254
25.2M
25.20 mi14:13:313:45:338:573:53
11:16
#19299
Finish
26.22 mi14:23:353:55:379:0010:04
9:53
#19478
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi124629388938815860(Top 56%)10743(Top 67%)10743(Top 538%)
10K6.21 mi3.10 mi13518-10569826-4389826-43814620(Top 51%)10262(Top 64%)10262(Top 514%)
15K9.32 mi3.11 mi14297-77910121-29510121-29515860(Top 56%)10743(Top 67%)10743(Top 538%)
20K12.43 mi3.11 mi15114-81710430-30910430-30917082(Top 60%)11217(Top 70%)11217(Top 562%)
Half13.11 mi0.68 mi15224-11010472-4210472-4217010(Top 60%)11201(Top 70%)11201(Top 561%)
25K15.53 mi2.42 mi15789-56510696-22410696-22418044(Top 64%)11545(Top 72%)11545(Top 578%)
30K18.64 mi3.11 mi16722-93311024-32811024-32820107(Top 71%)12338(Top 77%)12338(Top 618%)
20M20.00 mi1.36 mi17258-53611208-18411208-18421896(Top 77%)13006(Top 81%)13006(Top 652%)
21M21.00 mi1.00 mi17813-55511433-22511433-22522696(Top 80%)13291(Top 83%)13291(Top 666%)
35K21.75 mi0.75 mi18194-38111573-14011573-14023701(Top 83%)13738(Top 85%)13738(Top 688%)
23M23.00 mi1.25 mi18717-52311774-20111774-20123264(Top 82%)13458(Top 84%)13458(Top 674%)
24M24.00 mi1.00 mi19065-34811909-13511909-13523389(Top 82%)13505(Top 84%)13505(Top 677%)
40K24.85 mi0.85 mi19254-18911960-5111960-5122445(Top 79%)12952(Top 80%)12952(Top 649%)
25.2M25.20 mi0.35 mi19299-4511968-811968-821383(Top 75%)12472(Top 77%)12472(Top 625%)
Finish26.22 mi1.02 mi19478-17912029-6112029-6122542(Top 79%)13046(Top 81%)13046(Top 654%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21stories
+97ft-345ft

Overall

15860

Males

10743

M50-54

10743

5K→10K

3.1 - 6.2 mi

Top 51%
×5stories
+79ft-138ft

Overall

14620

Males

10262

M50-54

10262

10K→15K

6.2 - 9.3 mi

Top 56%
×3stories
+67ft-78ft

Overall

15860

Males

10743

M50-54

10743

15K→20K

9.3 - 12.4 mi

Top 60%
×5stories
+106ft-86ft

Overall

17082

Males

11217

M50-54

11217

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

17010

Males

11201

M50-54

11201

Half→25K

13.1 - 15.5 mi

Top 64%
×4stories
+66ft-88ft

Overall

18044

Males

11545

M50-54

11545

25K→30K

15.5 - 18.6 mi

Top 71%
×9stories
+181ft-148ft

Overall

20107

Males

12338

M50-54

12338

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

21896

Males

13006

M50-54

13006

20M→21M

20.0 - 21.0 mi

Top 80%
×8stories
+106ft-24ft

Overall

22696

Males

13291

M50-54

13291

21M→35K

21.0 - 21.8 mi

Top 83%
×7stories
+17ft-86ft

Overall

23701

Males

13738

M50-54

13738

35K→23M

21.8 - 23.0 mi

Top 82%
×5stories
+23ft-63ft

Overall

23264

Males

13458

M50-54

13458

23M→24M

23.0 - 24.0 mi

Top 82%
×6stories
+12ft-82ft

Overall

23389

Males

13505

M50-54

13505

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

22445

Males

12952

M50-54

12952

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

21383

Males

12472

M50-54

12472

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2stories
+22ft-21ft

Overall

22542

Males

13046

M50-54

13046

Passing Analysis

Category:
Athletes Passed
465
Passed By
7481
Net Change
-7016
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12462
5K → 10K391095-1056#12462#13518
10K → 15K51830-779#13518#14297
15K → 20K72889-817#14297#15114
20K → Half13123-110#15114#15224
Half → 25K59624-565#15224#15789
25K → 30K57990-933#15789#16722
30K → 20M24560-536#16722#17258
20M → 21M25580-555#17258#17813
21M → 35K13394-381#17813#18194
35K → 23M33556-523#18194#18717
23M → 24M7355-348#18717#19065
24M → 40K33222-189#19065#19254
40K → 25.2M1964-45#19254#19299
25.2M → Finish20199-179#19299#19478
TOTALS4657481-7016
📊

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