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BOSTON MARATHON 2025

Zachary Samuels

Bib: 25897•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
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
8:45/mi
27:11
↑ 97↓ 3451.5%
10K· 6.21 mi
8:35/mi
53:51
↑ 79↓ 1380.4%
15K· 9.32 mi
8:39/mi
1:20:43
↑ 67↓ 78
20K· 12.43 mi
8:59/mi
1:48:38
↑ 106↓ 860.1%
Half· 13.11 mi
9:08/mi
1:54:52
↑ 19↓ 370.5%
25K· 15.53 mi
9:35/mi
2:18:05
↑ 66↓ 880.2%
30K· 18.64 mi
10:45/mi
2:51:30
↑ 181↓ 1480.2%
20M
12:59/mi
3:09:08
↑ 64↓ 500.2%
21M
14:39/mi
3:23:47
↑ 106↓ 241.6%
35K· 21.75 mi
13:10/mi
3:33:38
↑ 17↓ 861.7%
23M
13:27/mi
3:50:29
↑ 23↓ 630.6%
24M
13:16/mi
4:03:45
↓ 821.3%
40K· 24.85 mi
14:10/mi
4:15:52
↓ 200.3%
25.2M
14:07/mi
4:20:44
↑ 13↓ 160.2%
Finish· 26.22 mi
12:28/mi
4:33:26
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:52
Pace8:46 /mi
2nd Half
Distance13.11 mi
Time2:38:34
Pace12:06 /mi
📊Positive Split: 38.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:3027:118:4527:11
8:45
-
10K
6.21 mi12:09:1053:518:4026:40
8:35
-0:10
15K
9.32 mi12:36:021:20:438:4026:52
8:39
+0:04
20K
12.43 mi13:03:571:48:388:4427:55
8:59
+0:20
Half
13.11 mi13:10:111:54:528:466:14
9:08
+0:09
25K
15.53 mi13:33:242:18:058:5323:13
9:35
+0:27
30K
18.64 mi14:06:492:51:309:1233:25
10:45
+1:10
20M
20.00 mi14:24:273:09:089:2717:38
12:59
+2:14
21M
21.00 mi14:39:063:23:479:4214:39
14:39
+1:40
35K
21.75 mi14:48:573:33:389:499:51
13:10
-1:29
23M
23.00 mi15:05:483:50:2910:0116:51
13:27
+0:17
24M
24.00 mi15:19:044:03:4510:0913:16
13:16
-0:11
40K
24.85 mi15:31:114:15:5210:1812:07
14:10
+0:54
25.2M
25.20 mi15:36:034:20:4410:214:52
14:07
-0:03
Finish
26.22 mi15:48:454:33:2610:2612:42
12:28
-1:39

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

8:35 /mi

Average Pace

10:26 /mi

Slowest Pace

14:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:51:30

63% of race

Time at Steady Pace

1:10:18

26% of race

Time at Slower Pace

31:38

12% of race

Average Pace: 10:26 /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 mi11:42:3027:118:4527:11
8:45
#21245
10K
6.21 mi12:09:1053:518:4026:40
8:35
#20728
15K
9.32 mi12:36:021:20:438:4026:52
8:39
#20535
20K
12.43 mi13:03:571:48:388:4427:55
8:59
#20639
Half
13.11 mi13:10:111:54:528:466:14
9:08
#20731
25K
15.53 mi13:33:242:18:058:5323:13
9:35
#21042
30K
18.64 mi14:06:492:51:309:1233:25
10:45
#21757
20M
20.00 mi14:24:273:09:089:2717:38
12:59
#22426
21M
21.00 mi14:39:063:23:479:4214:39
14:39
#22870
35K
21.75 mi14:48:573:33:389:499:51
13:10
#23146
23M
23.00 mi15:05:483:50:2910:0116:51
13:27
#23524
24M
24.00 mi15:19:044:03:4510:0913:16
13:16
#23808
40K
24.85 mi15:31:114:15:5210:1812:07
14:10
#24069
25.2M
25.20 mi15:36:034:20:4410:214:52
14:07
#24130
Finish
26.22 mi15:48:454:33:2610:2612:42
12:28
#24318
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi21245129761297620198(Top 71%)12601(Top 78%)12601(Top 561%)
10K6.21 mi3.10 mi20728+51712769+20712769+20720262(Top 71%)12596(Top 78%)12596(Top 561%)
15K9.32 mi3.11 mi20535+19312706+6312706+6320198(Top 71%)12601(Top 78%)12601(Top 561%)
20K12.43 mi3.11 mi20639-10412744-3812744-3820888(Top 74%)12846(Top 80%)12846(Top 572%)
Half13.11 mi0.68 mi20731-9212787-4312787-4322368(Top 79%)13505(Top 84%)13505(Top 601%)
25K15.53 mi2.42 mi21042-31112923-13612923-13622111(Top 78%)13340(Top 83%)13340(Top 594%)
30K18.64 mi3.11 mi21757-71513214-29113214-29123504(Top 83%)13837(Top 86%)13837(Top 616%)
20M20.00 mi1.36 mi22426-66913480-26613480-26626421(Top 93%)15111(Top 94%)15111(Top 672%)
21M21.00 mi1.00 mi22870-44413650-17013650-17026854(Top 95%)15293(Top 95%)15293(Top 681%)
35K21.75 mi0.75 mi23146-27613777-12713777-12727110(Top 95%)15394(Top 96%)15394(Top 685%)
23M23.00 mi1.25 mi23524-37813921-14413921-14426848(Top 95%)15257(Top 95%)15257(Top 679%)
24M24.00 mi1.00 mi23808-28414037-11614037-11627118(Top 95%)15345(Top 95%)15345(Top 683%)
40K24.85 mi0.85 mi24069-26114141-10414141-10427308(Top 96%)15446(Top 96%)15446(Top 687%)
25.2M25.20 mi0.35 mi24130-6114165-2414165-2426397(Top 93%)14948(Top 93%)14948(Top 665%)
Finish26.22 mi1.02 mi24318-18814255-9014255-9027263(Top 96%)15440(Top 96%)15440(Top 687%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

20198

Males

12601

M40-44

12601

5K→10K

3.1 - 6.2 mi

Top 71%
×5story building
+79ft-138ft

Overall

20262

Males

12596

M40-44

12596

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

20198

Males

12601

M40-44

12601

15K→20K

9.3 - 12.4 mi

Top 74%
×5story building
+106ft-86ft

Overall

20888

Males

12846

M40-44

12846

20K→Half

12.4 - 13.1 mi

Top 79%
×2story building
+19ft-37ft

Overall

22368

Males

13505

M40-44

13505

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

22111

Males

13340

M40-44

13340

25K→30K

15.5 - 18.6 mi

Top 83%
×9story building
+181ft-148ft

Overall

23504

Males

13837

M40-44

13837

30K→20M

18.6 - 20.0 mi

Top 93%
×5story building
+64ft-50ft

Overall

26421

Males

15111

M40-44

15111

20M→21M

20.0 - 21.0 mi

Top 95%
×8story building
+106ft-24ft

Overall

26854

Males

15293

M40-44

15293

21M→35K

21.0 - 21.8 mi

Top 95%
×7story building
+17ft-86ft

Overall

27110

Males

15394

M40-44

15394

35K→23M

21.8 - 23.0 mi

Top 95%
×5story building
+23ft-63ft

Overall

26848

Males

15257

M40-44

15257

23M→24M

23.0 - 24.0 mi

Top 95%
×6story building
+12ft-82ft

Overall

27118

Males

15345

M40-44

15345

24M→40K

24.0 - 24.9 mi

Top 96%
×1story
+6ft-20ft

Overall

27308

Males

15446

M40-44

15446

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

26397

Males

14948

M40-44

14948

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2story building
+22ft-21ft

Overall

27263

Males

15440

M40-44

15440

Passing Analysis

Category:
Athletes Passed
1276
Passed By
4349
Net Change
-3073
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21245
5K → 10K629112+517#21245#20728
10K → 15K300107+193#20728#20535
15K → 20K148252-104#20535#20639
20K → Half11103-92#20639#20731
Half → 25K64375-311#20731#21042
25K → 30K53768-715#21042#21757
30K → 20M14683-669#21757#22426
20M → 21M11455-444#22426#22870
21M → 35K7283-276#22870#23146
35K → 23M17395-378#23146#23524
23M → 24M8292-284#23524#23808
24M → 40K3264-261#23808#24069
40K → 25.2M465-61#24069#24130
25.2M → Finish7195-188#24130#24318
TOTALS12764349-3073
📊

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