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BOSTON MARATHON 2025

Brian Zenni

Bib: 2740•M

VA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 37%
Gender (Male)
#0 / 16105
Top 50%
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
21:43
Rank: #7740
Start → 5K
21:43 | 6:59/mi
10K· 6.21 mi
43:46
Rank: #8203 (-463)
5K → 10K
22:03 | 7:06/mi
15K· 9.32 mi
1:05:42
Rank: #8101 (+102)
10K → 15K
21:56 | 7:04/mi
20K· 12.43 mi
1:27:38
Rank: #7841 (+260)
15K → 20K
21:56 | 7:04/mi
Half· 13.11 mi
1:32:41
Rank: #7958 (-117)
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:49:54
Rank: #7754 (+204)
Half → 25K
17:13 | 7:06/mi
30K· 18.64 mi
2:13:56
Rank: #7928 (-174)
25K → 30K
24:02 | 7:44/mi
20M
2:25:40
Rank: #8405 (-477)
30K → 20M
11:44 | 8:38/mi
21M
2:34:50
Rank: #8749 (-344)
20M → 21M
9:10 | 9:10/mi
35K· 21.75 mi
2:41:14
Rank: #9037 (-288)
21M → 35K
6:24 | 8:33/mi
23M
2:52:40
Rank: #9562 (-525)
35K → 23M
11:26 | 9:08/mi
24M
3:01:35
Rank: #9935 (-373)
23M → 24M
8:55 | 8:55/mi
40K· 24.85 mi
3:09:32
Rank: #10282 (-347)
24M → 40K
7:57 | 9:18/mi
25.2M
3:13:02
Rank: #10426 (-144)
40K → 25.2M
3:30 | 10:09/mi
Finish· 26.22 mi
3:21:23
Rank: #10553 (-127)
25.2M → Finish
8:21 | 8:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:41
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:48:42
Pace8:18 /mi
📊Positive Split: 17.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:1721:436:5921:43
6:59
-
10K
6.21 mi10:45:2043:467:0322:03
7:06
+0:07
15K
9.32 mi11:07:161:05:427:0321:56
7:04
-0:02
20K
12.43 mi11:29:121:27:387:0321:56
7:04
0:00
Half
13.11 mi11:34:151:32:417:045:03
7:24
+0:20
25K
15.53 mi11:51:281:49:547:0417:13
7:06
-0:18
30K
18.64 mi12:15:302:13:567:1124:02
7:44
+0:38
20M
20.00 mi12:27:142:25:407:1711:44
8:38
+0:54
21M
21.00 mi12:36:242:34:507:229:10
9:10
+0:32
35K
21.75 mi12:42:482:41:147:256:24
8:33
-0:37
23M
23.00 mi12:54:142:52:407:3011:26
9:08
+0:35
24M
24.00 mi13:03:093:01:357:348:55
8:55
-0:13
40K
24.85 mi13:11:063:09:327:387:57
9:18
+0:23
25.2M
25.20 mi13:14:363:13:027:403:30
10:09
+0:51
Finish
26.22 mi13:22:573:21:237:418:21
8:12
-1:57

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

6:59 /mi

Average Pace

7:41 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:54

55% of race

Time at Steady Pace

50:31

25% of race

Time at Slower Pace

40:58

20% of race

Average Pace: 7:41 /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 mi10:23:1721:436:5921:43
6:59
#7740
10K
6.21 mi10:45:2043:467:0322:03
7:06
#8203
15K
9.32 mi11:07:161:05:427:0321:56
7:04
#8101
20K
12.43 mi11:29:121:27:387:0321:56
7:04
#7841
Half
13.11 mi11:34:151:32:417:045:03
7:24
#7958
25K
15.53 mi11:51:281:49:547:0417:13
7:06
#7754
30K
18.64 mi12:15:302:13:567:1124:02
7:44
#7928
20M
20.00 mi12:27:142:25:407:1711:44
8:38
#8405
21M
21.00 mi12:36:242:34:507:229:10
9:10
#8749
35K
21.75 mi12:42:482:41:147:256:24
8:33
#9037
23M
23.00 mi12:54:142:52:407:3011:26
9:08
#9562
24M
24.00 mi13:03:093:01:357:348:55
8:55
#9935
40K
24.85 mi13:11:063:09:327:387:57
9:18
#10282
25.2M
25.20 mi13:14:363:13:027:403:30
10:09
#10426
Finish
26.22 mi13:22:573:21:237:418:21
8:12
#10553
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi7740682568258042(Top 28%)6972(Top 43%)6972(Top 124%)
10K6.21 mi3.10 mi8203-4637116-2917116-2918656(Top 30%)7396(Top 46%)7396(Top 131%)
15K9.32 mi3.11 mi8101+1027036+807036+808042(Top 28%)6972(Top 43%)6972(Top 124%)
20K12.43 mi3.11 mi7841+2606853+1836853+1837257(Top 26%)6390(Top 40%)6390(Top 113%)
Half13.11 mi0.68 mi7958-1176927-746927-7410832(Top 38%)8457(Top 53%)8457(Top 150%)
25K15.53 mi2.42 mi7754+2046777+1506777+1506987(Top 25%)6112(Top 38%)6112(Top 108%)
30K18.64 mi3.11 mi7928-1746828-516828-519442(Top 33%)7402(Top 46%)7402(Top 131%)
20M20.00 mi1.36 mi8405-4777091-2637091-26314604(Top 51%)9727(Top 60%)9727(Top 172%)
21M21.00 mi1.00 mi8749-3447260-1697260-16914401(Top 51%)9512(Top 59%)9512(Top 169%)
35K21.75 mi0.75 mi9037-2887406-1467406-14615748(Top 55%)10050(Top 62%)10050(Top 178%)
23M23.00 mi1.25 mi9562-5257652-2467652-24616976(Top 60%)10489(Top 65%)10489(Top 186%)
24M24.00 mi1.00 mi9935-3737801-1497801-14916899(Top 59%)10407(Top 65%)10407(Top 184%)
40K24.85 mi0.85 mi10282-3477938-1377938-13717811(Top 63%)10716(Top 67%)10716(Top 190%)
25.2M25.20 mi0.35 mi10426-1447999-617999-6117600(Top 62%)10623(Top 66%)10623(Top 188%)
Finish26.22 mi1.02 mi10553-1278027-288027-2814193(Top 50%)9103(Top 57%)9103(Top 161%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

8042

Males

6972

M18-39

6972

5K→10K

3.1 - 6.2 mi

Top 30%
×5stories
+79ft-138ft

Overall

8656

Males

7396

M18-39

7396

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

8042

Males

6972

M18-39

6972

15K→20K

9.3 - 12.4 mi

Top 26%
×5stories
+106ft-86ft

Overall

7257

Males

6390

M18-39

6390

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10832

Males

8457

M18-39

8457

Half→25K

13.1 - 15.5 mi

Top 25%
×4stories
+66ft-88ft

Overall

6987

Males

6112

M18-39

6112

25K→30K

15.5 - 18.6 mi

Top 33%
×9stories
+181ft-148ft

Overall

9442

Males

7402

M18-39

7402

30K→20M

18.6 - 20.0 mi

Top 51%
×5stories
+64ft-50ft

Overall

14604

Males

9727

M18-39

9727

20M→21M

20.0 - 21.0 mi

Top 51%
×8stories
+106ft-24ft

Overall

14401

Males

9512

M18-39

9512

21M→35K

21.0 - 21.8 mi

Top 55%
×7stories
+17ft-86ft

Overall

15748

Males

10050

M18-39

10050

35K→23M

21.8 - 23.0 mi

Top 60%
×5stories
+23ft-63ft

Overall

16976

Males

10489

M18-39

10489

23M→24M

23.0 - 24.0 mi

Top 59%
×6stories
+12ft-82ft

Overall

16899

Males

10407

M18-39

10407

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

17811

Males

10716

M18-39

10716

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

17600

Males

10623

M18-39

10623

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

14193

Males

9103

M18-39

9103

Passing Analysis

Category:
Athletes Passed
1116
Passed By
3927
Net Change
-2813
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7740
5K → 10K71534-463#7740#8203
10K → 15K19391+102#8203#8101
15K → 20K29232+260#8101#7841
20K → Half6123-117#7841#7958
Half → 25K23228+204#7958#7754
25K → 30K136310-174#7754#7928
30K → 20M21498-477#7928#8405
20M → 21M28372-344#8405#8749
21M → 35K15303-288#8749#9037
35K → 23M29554-525#9037#9562
23M → 24M22395-373#9562#9935
24M → 40K21366-347#9935#10282
40K → 25.2M9153-144#10282#10426
25.2M → Finish41168-127#10426#10553
TOTALS11163927-2813
📊

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