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BOSTON MARATHON 2025

Jianhua Zhang

Bib: 3401•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 50%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:32
Rank: #12890
Start → 5K
23:32 | 7:34/mi
10K· 6.21 mi
49:03
Rank: #15612 (-2722)
5K → 10K
25:31 | 8:13/mi
15K· 9.32 mi
1:13:15
Rank: #15152 (+460)
10K → 15K
24:12 | 7:47/mi
20K· 12.43 mi
1:39:04
Rank: #15717 (-565)
15K → 20K
25:49 | 8:19/mi
Half· 13.11 mi
1:44:32
Rank: #15725 (-8)
20K → Half
5:28 | 8:01/mi
25K· 15.53 mi
2:04:18
Rank: #15548 (+177)
Half → 25K
19:46 | 8:09/mi
30K· 18.64 mi
2:30:59
Rank: #15500 (+48)
25K → 30K
26:41 | 8:35/mi
20M
2:41:54
Rank: #15092 (+408)
30K → 20M
10:55 | 8:02/mi
21M
2:50:40
Rank: #14858 (+234)
20M → 21M
8:46 | 8:46/mi
35K· 21.75 mi
2:56:53
Rank: #14801 (+57)
21M → 35K
6:13 | 8:19/mi
23M
3:07:23
Rank: #14650 (+151)
35K → 23M
10:30 | 8:23/mi
24M
3:15:36
Rank: #14541 (+109)
23M → 24M
8:13 | 8:13/mi
40K· 24.85 mi
3:22:38
Rank: #14395 (+146)
24M → 40K
7:02 | 8:14/mi
25.2M
3:25:45
Rank: #14354 (+41)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
3:33:13
Rank: #14097 (+257)
25.2M → Finish
7:28 | 7:20/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:32
Pace7:58 /mi
2nd Half
Distance13.11 mi
Time1:48:41
Pace8:17 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0223:327:3423:32
7:34
-
10K
6.21 mi11:16:3349:037:5425:31
8:13
+0:39
15K
9.32 mi11:40:451:13:157:5224:12
7:47
-0:26
20K
12.43 mi12:06:341:39:047:5825:49
8:19
+0:32
Half
13.11 mi12:12:021:44:327:585:28
8:01
-0:18
25K
15.53 mi12:31:482:04:188:0019:46
8:09
+0:08
30K
18.64 mi12:58:292:30:598:0626:41
8:35
+0:26
20M
20.00 mi13:09:242:41:548:0610:55
8:02
-0:33
21M
21.00 mi13:18:102:50:408:088:46
8:46
+0:44
35K
21.75 mi13:24:232:56:538:086:13
8:19
-0:27
23M
23.00 mi13:34:533:07:238:0910:30
8:23
+0:04
24M
24.00 mi13:43:063:15:368:098:13
8:13
-0:10
40K
24.85 mi13:50:083:22:388:097:02
8:14
+0:01
25.2M
25.20 mi13:53:153:25:458:103:07
9:02
+0:48
Finish
26.22 mi14:00:433:33:138:087:28
7:20
-1:42

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

7:20 /mi

Average Pace

8:08 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

55:12

26% of race

Time at Steady Pace

1:59:27

56% of race

Time at Slower Pace

38:34

18% of race

Average Pace: 8:08 /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 mi10:51:0223:327:3423:32
7:34
#12890
10K
6.21 mi11:16:3349:037:5425:31
8:13
#15612
15K
9.32 mi11:40:451:13:157:5224:12
7:47
#15152
20K
12.43 mi12:06:341:39:047:5825:49
8:19
#15717
Half
13.11 mi12:12:021:44:327:585:28
8:01
#15725
25K
15.53 mi12:31:482:04:188:0019:46
8:09
#15548
30K
18.64 mi12:58:292:30:598:0626:41
8:35
#15500
20M
20.00 mi13:09:242:41:548:0610:55
8:02
#15092
21M
21.00 mi13:18:102:50:408:088:46
8:46
#14858
35K
21.75 mi13:24:232:56:538:086:13
8:19
#14801
23M
23.00 mi13:34:533:07:238:0910:30
8:23
#14650
24M
24.00 mi13:43:063:15:368:098:13
8:13
#14541
40K
24.85 mi13:50:083:22:388:097:02
8:14
#14395
25.2M
25.20 mi13:53:153:25:458:103:07
9:02
#14354
Finish
26.22 mi14:00:433:33:138:087:28
7:20
#14097
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi128909597959714264(Top 50%)10041(Top 62%)10041(Top 447%)
10K6.21 mi3.10 mi15612-272210662-106510662-106517964(Top 63%)11642(Top 72%)11642(Top 518%)
15K9.32 mi3.11 mi15152+46010458+20410458+20414264(Top 50%)10041(Top 62%)10041(Top 447%)
20K12.43 mi3.11 mi15717-56510678-22010678-22016972(Top 60%)11161(Top 69%)11161(Top 497%)
Half13.11 mi0.68 mi15725-8106781067815923(Top 56%)10726(Top 67%)10726(Top 477%)
25K15.53 mi2.42 mi15548+17710585+9310585+9314978(Top 53%)10211(Top 63%)10211(Top 454%)
30K18.64 mi3.11 mi15500+4810506+7910506+7915305(Top 54%)10186(Top 63%)10186(Top 453%)
20M20.00 mi1.36 mi15092+40810293+21310293+21310669(Top 38%)7877(Top 49%)7877(Top 351%)
21M21.00 mi1.00 mi14858+23410172+12110172+12112076(Top 43%)8411(Top 52%)8411(Top 374%)
35K21.75 mi0.75 mi14801+5710134+3810134+3814272(Top 50%)9402(Top 58%)9402(Top 418%)
23M23.00 mi1.25 mi14650+15110031+10310031+10312580(Top 44%)8511(Top 53%)8511(Top 379%)
24M24.00 mi1.00 mi14541+1099962+699962+6912674(Top 45%)8500(Top 53%)8500(Top 378%)
40K24.85 mi0.85 mi14395+1469862+1009862+10011714(Top 41%)7929(Top 49%)7929(Top 353%)
25.2M25.20 mi0.35 mi14354+419831+319831+3111977(Top 42%)7988(Top 50%)7988(Top 355%)
Finish26.22 mi1.02 mi14097+2579687+1449687+1447964(Top 28%)5898(Top 37%)5898(Top 262%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21stories
+97ft-345ft

Overall

14264

Males

10041

M40-44

10041

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

17964

Males

11642

M40-44

11642

10K→15K

6.2 - 9.3 mi

Top 50%
×3stories
+67ft-78ft

Overall

14264

Males

10041

M40-44

10041

15K→20K

9.3 - 12.4 mi

Top 60%
×5stories
+106ft-86ft

Overall

16972

Males

11161

M40-44

11161

20K→Half

12.4 - 13.1 mi

Top 56%
×2stories
+19ft-37ft

Overall

15923

Males

10726

M40-44

10726

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

14978

Males

10211

M40-44

10211

25K→30K

15.5 - 18.6 mi

Top 54%
×9stories
+181ft-148ft

Overall

15305

Males

10186

M40-44

10186

30K→20M

18.6 - 20.0 mi

Top 38%
×5stories
+64ft-50ft

Overall

10669

Males

7877

M40-44

7877

20M→21M

20.0 - 21.0 mi

Top 43%
×8stories
+106ft-24ft

Overall

12076

Males

8411

M40-44

8411

21M→35K

21.0 - 21.8 mi

Top 50%
×7stories
+17ft-86ft

Overall

14272

Males

9402

M40-44

9402

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

12580

Males

8511

M40-44

8511

23M→24M

23.0 - 24.0 mi

Top 45%
×6stories
+12ft-82ft

Overall

12674

Males

8500

M40-44

8500

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

11714

Males

7929

M40-44

7929

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11977

Males

7988

M40-44

7988

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7964

Males

5898

M40-44

5898

Passing Analysis

Category:
Athletes Passed
2670
Passed By
3877
Net Change
-1207
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12890
5K → 10K122734-2722#12890#15612
10K → 15K49131+460#15612#15152
15K → 20K84649-565#15152#15717
20K → Half2432-8#15717#15725
Half → 25K25881+177#15725#15548
25K → 30K261213+48#15548#15500
30K → 20M4102+408#15500#15092
20M → 21M25319+234#15092#14858
21M → 35K9235+57#14858#14801
35K → 23M18433+151#14801#14650
23M → 24M13223+109#14650#14541
24M → 40K15913+146#14541#14395
40K → 25.2M509+41#14395#14354
25.2M → Finish2603+257#14354#14097
TOTALS26703877-1207
📊

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