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BOSTON MARATHON 2025

Adam Lazarewicz

Bib: 27458•M

AZ

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 34%
Gender (Male)
#0 / 16105
Top 47%
Masters (Masters Men)
#0 / 10463
Top 36%
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:45/mi
24:04
↑ 97↓ 3451.5%
10K· 6.21 mi
7:23/mi
46:59
↑ 79↓ 1380.4%
15K· 9.32 mi
7:20/mi
1:09:47
↑ 67↓ 78
20K· 12.43 mi
7:33/mi
1:33:13
↑ 106↓ 860.1%
Half· 13.11 mi
7:14/mi
1:38:09
↑ 19↓ 370.5%
25K· 15.53 mi
7:18/mi
1:55:51
↑ 66↓ 880.2%
30K· 18.64 mi
7:34/mi
2:19:22
↑ 181↓ 1480.2%
20M
7:27/mi
2:29:30
↑ 64↓ 500.2%
21M
7:47/mi
2:37:17
↑ 106↓ 241.6%
35K· 21.75 mi
7:05/mi
2:42:35
↑ 17↓ 861.7%
23M
7:42/mi
2:52:13
↑ 23↓ 630.6%
24M
7:52/mi
3:00:05
↓ 821.3%
40K· 24.85 mi
8:09/mi
3:07:03
↓ 200.3%
25.2M
9:28/mi
3:10:19
↑ 13↓ 160.2%
Finish· 26.22 mi
8:00/mi
3:18:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:09
Pace7:29 /mi
2nd Half
Distance13.11 mi
Time1:40:19
Pace7:39 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:39:5824:047:4524:04
7:45
-
10K
6.21 mi12:02:5346:597:3422:55
7:23
-0:22
15K
9.32 mi12:25:411:09:477:2922:48
7:20
-0:03
20K
12.43 mi12:49:071:33:137:3023:26
7:33
+0:13
Half
13.11 mi12:54:031:38:097:294:56
7:14
-0:19
25K
15.53 mi13:11:451:55:517:2717:42
7:18
+0:04
30K
18.64 mi13:35:162:19:227:2923:31
7:34
+0:16
20M
20.00 mi13:45:242:29:307:2810:08
7:27
-0:07
21M
21.00 mi13:53:112:37:177:297:47
7:47
+0:20
35K
21.75 mi13:58:292:42:357:295:18
7:05
-0:42
23M
23.00 mi14:08:072:52:137:299:38
7:42
+0:37
24M
24.00 mi14:15:593:00:057:307:52
7:52
+0:10
40K
24.85 mi14:22:573:07:037:326:58
8:09
+0:17
25.2M
25.20 mi14:26:133:10:197:333:16
9:28
+1:19
Finish
26.22 mi14:34:223:18:287:358:09
8:00
-1:28

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

7:05 /mi

Average Pace

7:35 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

10:14

5% of race

Time at Steady Pace

2:41:59

82% of race

Time at Slower Pace

26:15

13% of race

Average Pace: 7:34 /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 mi11:39:5824:047:4524:04
7:45
#14319
10K
6.21 mi12:02:5346:597:3422:55
7:23
#12662
15K
9.32 mi12:25:411:09:477:2922:48
7:20
#11870
20K
12.43 mi12:49:071:33:137:3023:26
7:33
#11633
Half
13.11 mi12:54:031:38:097:294:56
7:14
#11524
25K
15.53 mi13:11:451:55:517:2717:42
7:18
#10959
30K
18.64 mi13:35:162:19:227:2923:31
7:34
#10364
20M
20.00 mi13:45:242:29:307:2810:08
7:27
#9996
21M
21.00 mi13:53:112:37:177:297:47
7:47
#9724
35K
21.75 mi13:58:292:42:357:295:18
7:05
#9539
23M
23.00 mi14:08:072:52:137:299:38
7:42
#9389
24M
24.00 mi14:15:593:00:057:307:52
7:52
#9407
40K
24.85 mi14:22:573:07:037:326:58
8:09
#9459
25.2M
25.20 mi14:26:133:10:197:333:16
9:28
#9536
Finish
26.22 mi14:34:223:18:287:358:09
8:00
#9662
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi14319101601016010297(Top 36%)8243(Top 51%)8243(Top 367%)
10K6.21 mi3.10 mi12662+16579467+6939467+69310960(Top 39%)8638(Top 54%)8638(Top 384%)
15K9.32 mi3.11 mi11870+7929083+3849083+38410297(Top 36%)8243(Top 51%)8243(Top 367%)
20K12.43 mi3.11 mi11633+2378921+1628921+16211097(Top 39%)8541(Top 53%)8541(Top 380%)
Half13.11 mi0.68 mi11524+1098867+548867+549321(Top 33%)7664(Top 48%)7664(Top 341%)
25K15.53 mi2.42 mi10959+5658560+3078560+3078364(Top 29%)6979(Top 43%)6979(Top 311%)
30K18.64 mi3.11 mi10364+5958203+3578203+3578214(Top 29%)6716(Top 42%)6716(Top 299%)
20M20.00 mi1.36 mi9996+3687983+2207983+2206744(Top 24%)5685(Top 35%)5685(Top 253%)
21M21.00 mi1.00 mi9724+2727806+1777806+1776113(Top 22%)5139(Top 32%)5139(Top 229%)
35K21.75 mi0.75 mi9539+1857685+1217685+1215917(Top 21%)5016(Top 31%)5016(Top 223%)
23M23.00 mi1.25 mi9389+1507555+1307555+1307866(Top 28%)6088(Top 38%)6088(Top 271%)
24M24.00 mi1.00 mi9407-187529+267529+2610300(Top 36%)7320(Top 45%)7320(Top 326%)
40K24.85 mi0.85 mi9459-527524+57524+511182(Top 39%)7652(Top 48%)7652(Top 341%)
25.2M25.20 mi0.35 mi9536-777545-217545-2114352(Top 51%)9081(Top 56%)9081(Top 404%)
Finish26.22 mi1.02 mi9662-1267564-197564-1912828(Top 45%)8441(Top 52%)8441(Top 376%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

10297

Males

8243

M40-44

8243

5K→10K

3.1 - 6.2 mi

Top 39%
×5story building
+79ft-138ft

Overall

10960

Males

8638

M40-44

8638

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

10297

Males

8243

M40-44

8243

15K→20K

9.3 - 12.4 mi

Top 39%
×5story building
+106ft-86ft

Overall

11097

Males

8541

M40-44

8541

20K→Half

12.4 - 13.1 mi

Top 33%
×2story building
+19ft-37ft

Overall

9321

Males

7664

M40-44

7664

Half→25K

13.1 - 15.5 mi

Top 29%
×4story building
+66ft-88ft

Overall

8364

Males

6979

M40-44

6979

25K→30K

15.5 - 18.6 mi

Top 29%
×9story building
+181ft-148ft

Overall

8214

Males

6716

M40-44

6716

30K→20M

18.6 - 20.0 mi

Top 24%
×5story building
+64ft-50ft

Overall

6744

Males

5685

M40-44

5685

20M→21M

20.0 - 21.0 mi

Top 22%
×8story building
+106ft-24ft

Overall

6113

Males

5139

M40-44

5139

21M→35K

21.0 - 21.8 mi

Top 21%
×7story building
+17ft-86ft

Overall

5917

Males

5016

M40-44

5016

35K→23M

21.8 - 23.0 mi

Top 28%
×5story building
+23ft-63ft

Overall

7866

Males

6088

M40-44

6088

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

10300

Males

7320

M40-44

7320

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

11182

Males

7652

M40-44

7652

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

14352

Males

9081

M40-44

9081

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

12828

Males

8441

M40-44

8441

Passing Analysis

Category:
Athletes Passed
5276*
Passed By
619
Net Change
+4657
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14319
5K → 10K16669+1657#14319#12662
10K → 15K8019+792#12662#11870
15K → 20K32285+237#11870#11633
20K → Half1101+109#11633#11524
Half → 25K5683+565#11524#10959
25K → 30K60611+595#10959#10364
30K → 20M370*2+368#10364#9996
20M → 21M2775+272#9996#9724
21M → 35K1861+185#9724#9539
35K → 23M18535+150#9539#9389
23M → 24M7896-18#9389#9407
24M → 40K53105-52#9407#9459
40K → 25.2M1996-77#9459#9536
25.2M → Finish35161-126#9536#9662
TOTALS5276*619+4657

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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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