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BOSTON MARATHON 2025

Zhen Zhang

Bib: 4454•M

MN

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 19%
Gender (Male)
#0 / 16105
Top 30%
Masters (Masters Men)
#0 / 10463
Top 16%
Division (M40-44)
#0 / 2247
Top 39%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:03
Rank: #6105
Start → 5K
21:03 | 6:47/mi
10K· 6.21 mi
42:06
Rank: #6048 (+57)
5K → 10K
21:03 | 6:47/mi
15K· 9.32 mi
1:02:53
Rank: #5661 (+387)
10K → 15K
20:47 | 6:41/mi
20K· 12.43 mi
1:24:40
Rank: #6046 (-385)
15K → 20K
21:47 | 7:01/mi
Half· 13.11 mi
1:29:18
Rank: #6045 (+1)
20K → Half
4:38 | 6:47/mi
25K· 15.53 mi
1:46:16
Rank: #6074 (-29)
Half → 25K
16:58 | 7:00/mi
30K· 18.64 mi
2:08:22
Rank: #5862 (+212)
25K → 30K
22:06 | 7:07/mi
20M
2:18:17
Rank: #5823 (+39)
30K → 20M
9:55 | 7:18/mi
21M
2:26:23
Rank: #5882 (-59)
20M → 21M
8:06 | 8:06/mi
35K· 21.75 mi
2:31:18
Rank: #5744 (+138)
21M → 35K
4:55 | 6:34/mi
23M
2:39:54
Rank: #5514 (+230)
35K → 23M
8:36 | 6:52/mi
24M
2:46:50
Rank: #5413 (+101)
23M → 24M
6:56 | 6:56/mi
40K· 24.85 mi
2:52:47
Rank: #5301 (+112)
24M → 40K
5:57 | 6:58/mi
25.2M
2:55:32
Rank: #5285 (+16)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
3:03:00
Rank: #5314 (-29)
25.2M → Finish
7:28 | 7:20/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:18
Pace6:49 /mi
2nd Half
Distance13.11 mi
Time1:33:42
Pace7:09 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3721:036:4721:03
6:47
-
10K
6.21 mi10:44:4042:066:4721:03
6:47
0:00
15K
9.32 mi11:05:271:02:536:4520:47
6:41
-0:06
20K
12.43 mi11:27:141:24:406:4921:47
7:01
+0:20
Half
13.11 mi11:31:521:29:186:494:38
6:47
-0:14
25K
15.53 mi11:48:501:46:166:5016:58
7:00
+0:13
30K
18.64 mi12:10:562:08:226:5322:06
7:07
+0:07
20M
20.00 mi12:20:512:18:176:559:55
7:18
+0:11
21M
21.00 mi12:28:572:26:236:588:06
8:06
+0:48
35K
21.75 mi12:33:522:31:186:574:55
6:34
-1:32
23M
23.00 mi12:42:282:39:546:578:36
6:52
+0:18
24M
24.00 mi12:49:242:46:506:576:56
6:56
+0:04
40K
24.85 mi12:55:212:52:476:575:57
6:58
+0:02
25.2M
25.20 mi12:58:062:55:326:582:45
7:58
+1:00
Finish
26.22 mi13:05:343:03:006:597:28
7:20
-0:38

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

6:34 /mi

Average Pace

6:59 /mi

Slowest Pace

8:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

25:42

14% of race

Time at Steady Pace

2:09:04

71% of race

Time at Slower Pace

28:14

15% of race

Average Pace: 6:59 /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 mi10:23:3721:036:4721:03
6:47
#6105
10K
6.21 mi10:44:4042:066:4721:03
6:47
#6048
15K
9.32 mi11:05:271:02:536:4520:47
6:41
#5661
20K
12.43 mi11:27:141:24:406:4921:47
7:01
#6046
Half
13.11 mi11:31:521:29:186:494:38
6:47
#6045
25K
15.53 mi11:48:501:46:166:5016:58
7:00
#6074
30K
18.64 mi12:10:562:08:226:5322:06
7:07
#5862
20M
20.00 mi12:20:512:18:176:559:55
7:18
#5823
21M
21.00 mi12:28:572:26:236:588:06
8:06
#5882
35K
21.75 mi12:33:522:31:186:574:55
6:34
#5744
23M
23.00 mi12:42:282:39:546:578:36
6:52
#5514
24M
24.00 mi12:49:242:46:506:576:56
6:56
#5413
40K
24.85 mi12:55:212:52:476:575:57
6:58
#5301
25.2M
25.20 mi12:58:062:55:326:582:45
7:58
#5285
Finish
26.22 mi13:05:343:03:006:597:28
7:20
#5314
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi6105559955994964(Top 17%)4616(Top 29%)4616(Top 205%)
10K6.21 mi3.10 mi6048+575547+525547+526088(Top 21%)5550(Top 34%)5550(Top 247%)
15K9.32 mi3.11 mi5661+3875216+3315216+3314964(Top 17%)4616(Top 29%)4616(Top 205%)
20K12.43 mi3.11 mi6046-3855520-3045520-3046915(Top 24%)6141(Top 38%)6141(Top 273%)
Half13.11 mi0.68 mi6045+15516+45516+45966(Top 21%)5387(Top 33%)5387(Top 240%)
25K15.53 mi2.42 mi6074-295517-15517-16295(Top 22%)5609(Top 35%)5609(Top 250%)
30K18.64 mi3.11 mi5862+2125330+1875330+1875376(Top 19%)4834(Top 30%)4834(Top 215%)
20M20.00 mi1.36 mi5823+395285+455285+455731(Top 20%)4993(Top 31%)4993(Top 222%)
21M21.00 mi1.00 mi5882-595316-315316-317902(Top 28%)6184(Top 38%)6184(Top 275%)
35K21.75 mi0.75 mi5744+1385205+1115205+1112774(Top 10%)2556(Top 16%)2556(Top 114%)
23M23.00 mi1.25 mi5514+2305005+2005005+2003017(Top 11%)2756(Top 17%)2756(Top 123%)
24M24.00 mi1.00 mi5413+1014917+884917+884218(Top 15%)3700(Top 23%)3700(Top 165%)
40K24.85 mi0.85 mi5301+1124814+1034814+1033624(Top 13%)3194(Top 20%)3194(Top 142%)
25.2M25.20 mi0.35 mi5285+164795+194795+195696(Top 20%)4521(Top 28%)4521(Top 201%)
Finish26.22 mi1.02 mi5314-294799-44799-47901(Top 28%)5836(Top 36%)5836(Top 260%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4964

Males

4616

M40-44

4616

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

6088

Males

5550

M40-44

5550

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4964

Males

4616

M40-44

4616

15K→20K

9.3 - 12.4 mi

Top 24%
×5stories
+106ft-86ft

Overall

6915

Males

6141

M40-44

6141

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5966

Males

5387

M40-44

5387

Half→25K

13.1 - 15.5 mi

Top 22%
×4stories
+66ft-88ft

Overall

6295

Males

5609

M40-44

5609

25K→30K

15.5 - 18.6 mi

Top 19%
×9stories
+181ft-148ft

Overall

5376

Males

4834

M40-44

4834

30K→20M

18.6 - 20.0 mi

Top 20%
×5stories
+64ft-50ft

Overall

5731

Males

4993

M40-44

4993

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

7902

Males

6184

M40-44

6184

21M→35K

21.0 - 21.8 mi

Top 10%
×7stories
+17ft-86ft

Overall

2774

Males

2556

M40-44

2556

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

3017

Males

2756

M40-44

2756

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

4218

Males

3700

M40-44

3700

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3624

Males

3194

M40-44

3194

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5696

Males

4521

M40-44

4521

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7901

Males

5836

M40-44

5836

Passing Analysis

Category:
Athletes Passed
1903
Passed By
1112
Net Change
+791
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6105
5K → 10K207150+57#6105#6048
10K → 15K40518+387#6048#5661
15K → 20K58443-385#5661#6046
20K → Half2120+1#6046#6045
Half → 25K117146-29#6045#6074
25K → 30K29280+212#6074#5862
30K → 20M8950+39#5862#5823
20M → 21M45104-59#5823#5882
21M → 35K1402+138#5882#5744
35K → 23M2322+230#5744#5514
23M → 24M1087+101#5514#5413
24M → 40K1208+112#5413#5301
40K → 25.2M3216+16#5301#5285
25.2M → Finish3766-29#5285#5314
TOTALS19031112+791
📊

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