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BOSTON MARATHON 2025

David Zechner

Bib: 6236•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 14%
Gender (Male)
#0 / 16105
Top 23%
Division (M18-39)
#0 / 5642
Top 48%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:40
Rank: #5029
Start → 5K
20:40 | 6:39/mi
10K· 6.21 mi
41:11
Rank: #4711 (+318)
5K → 10K
20:31 | 6:36/mi
15K· 9.32 mi
1:01:46
Rank: #4597 (+114)
10K → 15K
20:35 | 6:38/mi
20K· 12.43 mi
1:22:31
Rank: #4469 (+128)
15K → 20K
20:45 | 6:41/mi
Half· 13.11 mi
1:27:02
Rank: #4470 (-1)
20K → Half
4:31 | 6:37/mi
25K· 15.53 mi
1:43:40
Rank: #4565 (-95)
Half → 25K
16:38 | 6:52/mi
30K· 18.64 mi
2:05:30
Rank: #4581 (-16)
25K → 30K
21:50 | 7:02/mi
20M
2:15:12
Rank: #4595 (-14)
30K → 20M
9:42 | 7:08/mi
21M
2:22:44
Rank: #4583 (+12)
20M → 21M
7:32 | 7:32/mi
35K· 21.75 mi
2:27:53
Rank: #4557 (+26)
21M → 35K
5:09 | 6:53/mi
23M
2:36:41
Rank: #4476 (+81)
35K → 23M
8:48 | 7:02/mi
24M
2:43:19
Rank: #4345 (+131)
23M → 24M
6:38 | 6:38/mi
40K· 24.85 mi
2:49:02
Rank: #4224 (+121)
24M → 40K
5:43 | 6:41/mi
25.2M
2:51:30
Rank: #4159 (+65)
40K → 25.2M
2:28 | 7:09/mi
Finish· 26.22 mi
2:57:58
Rank: #4027 (+132)
25.2M → Finish
6:28 | 6:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:02
Pace6:38 /mi
2nd Half
Distance13.11 mi
Time1:30:56
Pace6:56 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:4920:406:3920:40
6:39
-
10K
6.21 mi10:46:2041:116:3820:31
6:36
-0:03
15K
9.32 mi11:06:551:01:466:3820:35
6:38
+0:02
20K
12.43 mi11:27:401:22:316:3820:45
6:41
+0:03
Half
13.11 mi11:32:111:27:026:384:31
6:37
-0:04
25K
15.53 mi11:48:491:43:406:4016:38
6:52
+0:15
30K
18.64 mi12:10:392:05:306:4421:50
7:02
+0:10
20M
20.00 mi12:20:212:15:126:469:42
7:08
+0:06
21M
21.00 mi12:27:532:22:446:487:32
7:32
+0:24
35K
21.75 mi12:33:022:27:536:485:09
6:53
-0:39
23M
23.00 mi12:41:502:36:416:498:48
7:02
+0:09
24M
24.00 mi12:48:282:43:196:486:38
6:38
-0:24
40K
24.85 mi12:54:112:49:026:485:43
6:41
+0:03
25.2M
25.20 mi12:56:392:51:306:482:28
7:09
+0:28
Finish
26.22 mi13:03:072:57:586:486:28
6:21
-0:48

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

6:21 /mi

Average Pace

6:48 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:38

72% of race

Time at Steady Pace

42:48

24% of race

Time at Slower Pace

7:32

4% of race

Average Pace: 6:47 /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 mi10:25:4920:406:3920:40
6:39
#5029
10K
6.21 mi10:46:2041:116:3820:31
6:36
#4711
15K
9.32 mi11:06:551:01:466:3820:35
6:38
#4597
20K
12.43 mi11:27:401:22:316:3820:45
6:41
#4469
Half
13.11 mi11:32:111:27:026:384:31
6:37
#4470
25K
15.53 mi11:48:491:43:406:4016:38
6:52
#4565
30K
18.64 mi12:10:392:05:306:4421:50
7:02
#4581
20M
20.00 mi12:20:212:15:126:469:42
7:08
#4595
21M
21.00 mi12:27:532:22:446:487:32
7:32
#4583
35K
21.75 mi12:33:022:27:536:485:09
6:53
#4557
23M
23.00 mi12:41:502:36:416:498:48
7:02
#4476
24M
24.00 mi12:48:282:43:196:486:38
6:38
#4345
40K
24.85 mi12:54:112:49:026:485:43
6:41
#4224
25.2M
25.20 mi12:56:392:51:306:482:28
7:09
#4159
Finish
26.22 mi13:03:072:57:586:486:28
6:21
#4027
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5029469546954439(Top 16%)4160(Top 26%)4160(Top 74%)
10K6.21 mi3.10 mi4711+3184411+2844411+2844486(Top 16%)4202(Top 26%)4202(Top 74%)
15K9.32 mi3.11 mi4597+1144309+1024309+1024439(Top 16%)4160(Top 26%)4160(Top 74%)
20K12.43 mi3.11 mi4469+1284189+1204189+1204237(Top 15%)3965(Top 25%)3965(Top 70%)
Half13.11 mi0.68 mi4470-1418941894514(Top 16%)4207(Top 26%)4207(Top 75%)
25K15.53 mi2.42 mi4565-954266-774266-775343(Top 19%)4871(Top 30%)4871(Top 86%)
30K18.64 mi3.11 mi4581-16426642664850(Top 17%)4413(Top 27%)4413(Top 78%)
20M20.00 mi1.36 mi4595-144262+44262+44844(Top 17%)4359(Top 27%)4359(Top 77%)
21M21.00 mi1.00 mi4583+124251+114251+114751(Top 17%)4185(Top 26%)4185(Top 74%)
35K21.75 mi0.75 mi4557+264222+294222+294573(Top 16%)4051(Top 25%)4051(Top 72%)
23M23.00 mi1.25 mi4476+814140+824140+823915(Top 14%)3504(Top 22%)3504(Top 62%)
24M24.00 mi1.00 mi4345+1314012+1284012+1282639(Top 9%)2422(Top 15%)2422(Top 43%)
40K24.85 mi0.85 mi4224+1213901+1113901+1112306(Top 8%)2111(Top 13%)2111(Top 37%)
25.2M25.20 mi0.35 mi4159+653840+613840+611975(Top 7%)1788(Top 11%)1788(Top 32%)
Finish26.22 mi1.02 mi4027+1323722+1183722+1182082(Top 7%)1909(Top 12%)1909(Top 34%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4439

Males

4160

M18-39

4160

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4486

Males

4202

M18-39

4202

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4439

Males

4160

M18-39

4160

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

4237

Males

3965

M18-39

3965

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4514

Males

4207

M18-39

4207

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5343

Males

4871

M18-39

4871

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4850

Males

4413

M18-39

4413

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4844

Males

4359

M18-39

4359

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4751

Males

4185

M18-39

4185

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4573

Males

4051

M18-39

4051

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3915

Males

3504

M18-39

3504

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2639

Males

2422

M18-39

2422

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2306

Males

2111

M18-39

2111

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1975

Males

1788

M18-39

1788

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

2082

Males

1909

M18-39

1909

Passing Analysis

Category:
Athletes Passed
1734
Passed By
732
Net Change
+1002
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5029
5K → 10K36749+318#5029#4711
10K → 15K17258+114#4711#4597
15K → 20K17446+128#4597#4469
20K → Half1819-1#4469#4470
Half → 25K86181-95#4470#4565
25K → 30K140156-16#4565#4581
30K → 20M6680-14#4581#4595
20M → 21M8371+12#4595#4583
21M → 35K4923+26#4583#4557
35K → 23M11332+81#4557#4476
23M → 24M1376+131#4476#4345
24M → 40K1287+121#4345#4224
40K → 25.2M650+65#4224#4159
25.2M → Finish1364+132#4159#4027
TOTALS1734732+1002
📊

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