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BOSTON MARATHON 2025

James Zenock

Bib: 6845•M

NJ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 20%
Gender (Male)
#0 / 16105
Top 31%
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
21:12
Rank: #6503
Start → 5K
21:12 | 6:49/mi
10K· 6.21 mi
42:30
Rank: #6661 (-158)
5K → 10K
21:18 | 6:51/mi
15K· 9.32 mi
1:04:11
Rank: #6965 (-304)
10K → 15K
21:41 | 6:59/mi
20K· 12.43 mi
1:25:57
Rank: #6952 (+13)
15K → 20K
21:46 | 7:00/mi
Half· 13.11 mi
1:30:37
Rank: #6922 (+30)
20K → Half
4:40 | 6:50/mi
25K· 15.53 mi
1:47:50
Rank: #6869 (+53)
Half → 25K
17:13 | 7:06/mi
30K· 18.64 mi
2:10:19
Rank: #6602 (+267)
25K → 30K
22:29 | 7:14/mi
20M
2:20:09
Rank: #6431 (+171)
30K → 20M
9:50 | 7:14/mi
21M
2:27:49
Rank: #6318 (+113)
20M → 21M
7:40 | 7:40/mi
35K· 21.75 mi
2:32:52
Rank: #6199 (+119)
21M → 35K
5:03 | 6:45/mi
23M
2:41:57
Rank: #6050 (+149)
35K → 23M
9:05 | 7:15/mi
24M
2:48:57
Rank: #5948 (+102)
23M → 24M
7:00 | 7:00/mi
40K· 24.85 mi
2:55:02
Rank: #5841 (+107)
24M → 40K
6:05 | 7:07/mi
25.2M
2:57:42
Rank: #5776 (+65)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
3:04:19
Rank: #5594 (+182)
25.2M → Finish
6:37 | 6:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:37
Pace6:55 /mi
2nd Half
Distance13.11 mi
Time1:33:42
Pace7:09 /mi
📊Positive Split: 3.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:28:3621:126:4921:12
6:49
-
10K
6.21 mi10:49:5442:306:5021:18
6:51
+0:02
15K
9.32 mi11:11:351:04:116:5321:41
6:59
+0:08
20K
12.43 mi11:33:211:25:576:5521:46
7:00
+0:01
Half
13.11 mi11:38:011:30:376:554:40
6:50
-0:10
25K
15.53 mi11:55:141:47:506:5617:13
7:06
+0:16
30K
18.64 mi12:17:432:10:196:5922:29
7:14
+0:08
20M
20.00 mi12:27:332:20:097:009:50
7:14
0:00
21M
21.00 mi12:35:132:27:497:027:40
7:40
+0:26
35K
21.75 mi12:40:162:32:527:025:03
6:45
-0:55
23M
23.00 mi12:49:212:41:577:029:05
7:15
+0:30
24M
24.00 mi12:56:212:48:577:027:00
7:00
-0:15
40K
24.85 mi13:02:262:55:027:036:05
7:07
+0:07
25.2M
25.20 mi13:05:062:57:427:032:40
7:44
+0:37
Finish
26.22 mi13:11:433:04:197:026:37
6:30
-1:14

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

6:30 /mi

Average Pace

7:02 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:12:35

72% of race

Time at Steady Pace

49:04

27% of race

Time at Slower Pace

2:40

1% of race

Average Pace: 7:02 /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 mi10:28:3621:126:4921:12
6:49
#6503
10K
6.21 mi10:49:5442:306:5021:18
6:51
#6661
15K
9.32 mi11:11:351:04:116:5321:41
6:59
#6965
20K
12.43 mi11:33:211:25:576:5521:46
7:00
#6952
Half
13.11 mi11:38:011:30:376:554:40
6:50
#6922
25K
15.53 mi11:55:141:47:506:5617:13
7:06
#6869
30K
18.64 mi12:17:432:10:196:5922:29
7:14
#6602
20M
20.00 mi12:27:332:20:097:009:50
7:14
#6431
21M
21.00 mi12:35:132:27:497:027:40
7:40
#6318
35K
21.75 mi12:40:162:32:527:025:03
6:45
#6199
23M
23.00 mi12:49:212:41:577:029:05
7:15
#6050
24M
24.00 mi12:56:212:48:577:027:00
7:00
#5948
40K
24.85 mi13:02:262:55:027:036:05
7:07
#5841
25.2M
25.20 mi13:05:062:57:427:032:40
7:44
#5776
Finish
26.22 mi13:11:433:04:197:026:37
6:30
#5594
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6503592059207477(Top 26%)6596(Top 41%)6596(Top 117%)
10K6.21 mi3.10 mi6661-1586033-1136033-1136912(Top 24%)6206(Top 39%)6206(Top 110%)
15K9.32 mi3.11 mi6965-3046258-2256258-2257477(Top 26%)6596(Top 41%)6596(Top 117%)
20K12.43 mi3.11 mi6952+136240+186240+186894(Top 24%)6127(Top 38%)6127(Top 109%)
Half13.11 mi0.68 mi6922+306217+236217+236482(Top 23%)5822(Top 36%)5822(Top 103%)
25K15.53 mi2.42 mi6869+536149+686149+686972(Top 25%)6097(Top 38%)6097(Top 108%)
30K18.64 mi3.11 mi6602+2675910+2395910+2396105(Top 21%)5385(Top 33%)5385(Top 95%)
20M20.00 mi1.36 mi6431+1715761+1495761+1495416(Top 19%)4791(Top 30%)4791(Top 85%)
21M21.00 mi1.00 mi6318+1135658+1035658+1035475(Top 19%)4721(Top 29%)4721(Top 84%)
35K21.75 mi0.75 mi6199+1195554+1045554+1043855(Top 14%)3477(Top 22%)3477(Top 62%)
23M23.00 mi1.25 mi6050+1495425+1295425+1295215(Top 18%)4466(Top 28%)4466(Top 79%)
24M24.00 mi1.00 mi5948+1025323+1025323+1024645(Top 16%)4016(Top 25%)4016(Top 71%)
40K24.85 mi0.85 mi5841+1075226+975226+974582(Top 16%)3914(Top 24%)3914(Top 69%)
25.2M25.20 mi0.35 mi5776+655167+595167+594535(Top 16%)3813(Top 24%)3813(Top 68%)
Finish26.22 mi1.02 mi5594+1825014+1535014+1532812(Top 10%)2519(Top 16%)2519(Top 45%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21stories
+97ft-345ft

Overall

7477

Males

6596

M18-39

6596

5K→10K

3.1 - 6.2 mi

Top 24%
×5stories
+79ft-138ft

Overall

6912

Males

6206

M18-39

6206

10K→15K

6.2 - 9.3 mi

Top 26%
×3stories
+67ft-78ft

Overall

7477

Males

6596

M18-39

6596

15K→20K

9.3 - 12.4 mi

Top 24%
×5stories
+106ft-86ft

Overall

6894

Males

6127

M18-39

6127

20K→Half

12.4 - 13.1 mi

Top 23%
×2stories
+19ft-37ft

Overall

6482

Males

5822

M18-39

5822

Half→25K

13.1 - 15.5 mi

Top 25%
×4stories
+66ft-88ft

Overall

6972

Males

6097

M18-39

6097

25K→30K

15.5 - 18.6 mi

Top 21%
×9stories
+181ft-148ft

Overall

6105

Males

5385

M18-39

5385

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5416

Males

4791

M18-39

4791

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

5475

Males

4721

M18-39

4721

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3855

Males

3477

M18-39

3477

35K→23M

21.8 - 23.0 mi

Top 18%
×5stories
+23ft-63ft

Overall

5215

Males

4466

M18-39

4466

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4645

Males

4016

M18-39

4016

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4582

Males

3914

M18-39

3914

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4535

Males

3813

M18-39

3813

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2812

Males

2519

M18-39

2519

Passing Analysis

Category:
Athletes Passed
1936
Passed By
1027
Net Change
+909
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6503
5K → 10K131289-158#6503#6661
10K → 15K60364-304#6661#6965
15K → 20K156143+13#6965#6952
20K → Half4212+30#6952#6922
Half → 25K14087+53#6922#6869
25K → 30K32457+267#6869#6602
30K → 20M1809+171#6602#6431
20M → 21M12916+113#6431#6318
21M → 35K1201+119#6318#6199
35K → 23M16011+149#6199#6050
23M → 24M12119+102#6050#5948
24M → 40K1169+107#5948#5841
40K → 25.2M738+65#5841#5776
25.2M → Finish1842+182#5776#5594
TOTALS19361027+909
📊

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