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BOSTON MARATHON 2025

Antonio Samson

Bib: 25388•M

QC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M70-74)
#0 / 228
Top 47%
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
9:25/mi
29:16
↑ 97↓ 3451.5%
10K· 6.21 mi
9:10/mi
57:46
↑ 79↓ 1380.4%
15K· 9.32 mi
9:21/mi
1:26:50
↑ 67↓ 78
20K· 12.43 mi
9:48/mi
1:57:17
↑ 106↓ 860.1%
Half· 13.11 mi
9:30/mi
2:03:46
↑ 19↓ 370.5%
25K· 15.53 mi
10:41/mi
2:29:40
↑ 66↓ 880.2%
30K· 18.64 mi
10:38/mi
3:02:42
↑ 181↓ 1480.2%
20M
10:36/mi
3:17:06
↑ 64↓ 500.2%
21M
12:58/mi
3:30:04
↑ 106↓ 241.6%
35K· 21.75 mi
9:24/mi
3:37:06
↑ 17↓ 861.7%
23M
9:52/mi
3:49:27
↑ 23↓ 630.6%
24M
9:56/mi
3:59:23
↓ 821.3%
40K· 24.85 mi
9:58/mi
4:07:54
↓ 200.3%
25.2M
11:39/mi
4:11:55
↑ 13↓ 160.2%
Finish· 26.22 mi
9:05/mi
4:21:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:03:46
Pace9:26 /mi
2nd Half
Distance13.11 mi
Time2:17:24
Pace10:29 /mi
📊Positive Split: 11.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:29:1129:169:2529:16
9:25
-
10K
6.21 mi11:57:4157:469:1828:30
9:10
-0:15
15K
9.32 mi12:26:451:26:509:1929:04
9:21
+0:11
20K
12.43 mi12:57:121:57:179:2630:27
9:48
+0:27
Half
13.11 mi13:03:412:03:469:266:29
9:30
-0:18
25K
15.53 mi13:29:352:29:409:3825:54
10:41
+1:11
30K
18.64 mi14:02:373:02:429:4833:02
10:38
-0:03
20M
20.00 mi14:17:013:17:069:5114:24
10:36
-0:02
21M
21.00 mi14:29:593:30:0410:0012:58
12:58
+2:22
35K
21.75 mi14:37:013:37:069:597:02
9:24
-3:34
23M
23.00 mi14:49:223:49:279:5912:21
9:52
+0:28
24M
24.00 mi14:59:183:59:239:589:56
9:56
+0:04
40K
24.85 mi15:07:494:07:549:588:31
9:58
+0:02
25.2M
25.20 mi15:11:504:11:5510:004:01
11:39
+1:41
Finish
26.22 mi15:21:054:21:109:589:15
9:05
-2:34

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

9:05 /mi

Average Pace

9:58 /mi

Slowest Pace

12:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:06:49

26% of race

Time at Steady Pace

1:44:02

40% of race

Time at Slower Pace

1:30:19

35% of race

Average Pace: 9:58 /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 mi11:29:1129:169:2529:16
9:25
#23966
10K
6.21 mi11:57:4157:469:1828:30
9:10
#23547
15K
9.32 mi12:26:451:26:509:1929:04
9:21
#23496
20K
12.43 mi12:57:121:57:179:2630:27
9:48
#23591
Half
13.11 mi13:03:412:03:469:266:29
9:30
#23593
25K
15.53 mi13:29:352:29:409:3825:54
10:41
#23790
30K
18.64 mi14:02:373:02:429:4833:02
10:38
#23671
20M
20.00 mi14:17:013:17:069:5114:24
10:36
#23596
21M
21.00 mi14:29:593:30:0410:0012:58
12:58
#23737
35K
21.75 mi14:37:013:37:069:597:02
9:24
#23611
23M
23.00 mi14:49:223:49:279:5912:21
9:52
#23405
24M
24.00 mi14:59:183:59:239:589:56
9:56
#23304
40K
24.85 mi15:07:494:07:549:588:31
9:58
#23183
25.2M
25.20 mi15:11:504:11:5510:004:01
11:39
#23170
Finish
26.22 mi15:21:054:21:109:589:15
9:05
#23078
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM70-74Seg. OverallSeg. MalesSeg. M70-74
5K3.11 mi3.11 mi23966142211422123362(Top 82%)14003(Top 87%)14003(Top 6142%)
10K6.21 mi3.10 mi23547+41914033+18814033+18823088(Top 81%)13846(Top 86%)13846(Top 6073%)
15K9.32 mi3.11 mi23496+5114023+1014023+1023362(Top 82%)14003(Top 87%)14003(Top 6142%)
20K12.43 mi3.11 mi23591-9514070-4714070-4723761(Top 84%)14119(Top 88%)14119(Top 6193%)
Half13.11 mi0.68 mi23593-214071-114071-123561(Top 83%)14038(Top 87%)14038(Top 6157%)
25K15.53 mi2.42 mi23790-19714149-7814149-7824676(Top 87%)14497(Top 90%)14497(Top 6358%)
30K18.64 mi3.11 mi23671+11914054+9514054+9523231(Top 82%)13718(Top 85%)13718(Top 6017%)
20M20.00 mi1.36 mi23596+7513998+5613998+5622682(Top 80%)13382(Top 83%)13382(Top 5869%)
21M21.00 mi1.00 mi23737-14114047-4914047-4924995(Top 88%)14362(Top 89%)14362(Top 6299%)
35K21.75 mi0.75 mi23611+12613981+6613981+6619950(Top 70%)11955(Top 74%)11955(Top 5243%)
23M23.00 mi1.25 mi23405+20613869+11213869+11220015(Top 70%)11910(Top 74%)11910(Top 5224%)
24M24.00 mi1.00 mi23304+10113796+7313796+7321170(Top 75%)12433(Top 77%)12433(Top 5453%)
40K24.85 mi0.85 mi23183+12113716+8013716+8020344(Top 72%)11964(Top 74%)11964(Top 5247%)
25.2M25.20 mi0.35 mi23170+1313708+813708+822432(Top 79%)13010(Top 81%)13010(Top 5706%)
Finish26.22 mi1.02 mi23078+9213654+5413654+5419411(Top 68%)11545(Top 72%)11545(Top 5064%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21story building
+97ft-345ft

Overall

23362

Males

14003

M70-74

14003

5K→10K

3.1 - 6.2 mi

Top 81%
×5story building
+79ft-138ft

Overall

23088

Males

13846

M70-74

13846

10K→15K

6.2 - 9.3 mi

Top 82%
×3story building
+67ft-78ft

Overall

23362

Males

14003

M70-74

14003

15K→20K

9.3 - 12.4 mi

Top 84%
×5story building
+106ft-86ft

Overall

23761

Males

14119

M70-74

14119

20K→Half

12.4 - 13.1 mi

Top 83%
×2story building
+19ft-37ft

Overall

23561

Males

14038

M70-74

14038

Half→25K

13.1 - 15.5 mi

Top 87%
×4story building
+66ft-88ft

Overall

24676

Males

14497

M70-74

14497

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

23231

Males

13718

M70-74

13718

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

22682

Males

13382

M70-74

13382

20M→21M

20.0 - 21.0 mi

Top 88%
×8story building
+106ft-24ft

Overall

24995

Males

14362

M70-74

14362

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

19950

Males

11955

M70-74

11955

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

20015

Males

11910

M70-74

11910

23M→24M

23.0 - 24.0 mi

Top 75%
×6story building
+12ft-82ft

Overall

21170

Males

12433

M70-74

12433

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

20344

Males

11964

M70-74

11964

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

22432

Males

13010

M70-74

13010

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

19411

Males

11545

M70-74

11545

Passing Analysis

Category:
Athletes Passed
1953
Passed By
1065
Net Change
+888
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23966
5K → 10K50384+419#23966#23547
10K → 15K195144+51#23547#23496
15K → 20K117212-95#23496#23591
20K → Half1820-2#23591#23593
Half → 25K66263-197#23593#23790
25K → 30K21293+119#23790#23671
30K → 20M11338+75#23671#23596
20M → 21M35176-141#23596#23737
21M → 35K1271+126#23737#23611
35K → 23M2104+206#23611#23405
23M → 24M11615+101#23405#23304
24M → 40K1221+121#23304#23183
40K → 25.2M2411+13#23183#23170
25.2M → Finish953+92#23170#23078
TOTALS19531065+888
📊

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