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BOSTON MARATHON 2025

Justin Amero

Bib: 28156•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 (M45-49)
#0 / 2386
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
9:50/mi
30:32
↑ 97↓ 3451.5%
10K· 6.21 mi
9:52/mi
1:01:11
↑ 79↓ 1380.4%
15K· 9.32 mi
9:58/mi
1:32:10
↑ 67↓ 78
20K· 12.43 mi
9:50/mi
2:02:44
↑ 106↓ 860.1%
Half· 13.11 mi
9:43/mi
2:09:22
↑ 19↓ 370.5%
25K· 15.53 mi
10:09/mi
2:33:58
↑ 66↓ 880.2%
30K· 18.64 mi
10:43/mi
3:07:15
↑ 181↓ 1480.2%
20M
10:43/mi
3:21:49
↑ 64↓ 500.2%
21M
12:10/mi
3:33:59
↑ 106↓ 241.6%
35K· 21.75 mi
9:33/mi
3:41:08
↑ 17↓ 861.7%
23M
10:40/mi
3:54:29
↑ 23↓ 630.6%
24M
9:31/mi
4:04:00
↓ 821.3%
40K· 24.85 mi
9:54/mi
4:12:28
↓ 200.3%
25.2M
12:05/mi
4:16:38
↑ 13↓ 160.2%
Finish· 26.22 mi
10:10/mi
4:27:00
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:09:22
Pace9:52 /mi
2nd Half
Distance13.11 mi
Time2:17:38
Pace10:30 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:5530:329:5030:32
9:50
-
10K
6.21 mi12:23:341:01:119:5130:39
9:52
+0:02
15K
9.32 mi12:54:331:32:109:5330:59
9:58
+0:06
20K
12.43 mi13:25:072:02:449:5330:34
9:50
-0:08
Half
13.11 mi13:31:452:09:229:526:38
9:43
-0:07
25K
15.53 mi13:56:212:33:589:5524:36
10:09
+0:26
30K
18.64 mi14:29:383:07:1510:0333:17
10:43
+0:34
20M
20.00 mi14:44:123:21:4910:0514:34
10:43
0:00
21M
21.00 mi14:56:223:33:5910:1112:10
12:10
+1:27
35K
21.75 mi15:03:313:41:0810:107:09
9:33
-2:37
23M
23.00 mi15:16:523:54:2910:1213:21
10:40
+1:07
24M
24.00 mi15:26:234:04:0010:109:31
9:31
-1:09
40K
24.85 mi15:34:514:12:2810:098:28
9:54
+0:23
25.2M
25.20 mi15:39:014:16:3810:114:10
12:05
+2:11
Finish
26.22 mi15:49:234:27:0010:1110:22
10:10
-1:55

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

9:31 /mi

Average Pace

10:11 /mi

Slowest Pace

12:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

16:40

6% of race

Time at Steady Pace

2:52:48

65% of race

Time at Slower Pace

1:17:32

29% of race

Average Pace: 10:11 /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 mi11:52:5530:329:5030:32
9:50
#25153
10K
6.21 mi12:23:341:01:119:5130:39
9:52
#25066
15K
9.32 mi12:54:331:32:109:5330:59
9:58
#25019
20K
12.43 mi13:25:072:02:449:5330:34
9:50
#24705
Half
13.11 mi13:31:452:09:229:526:38
9:43
#24673
25K
15.53 mi13:56:212:33:589:5524:36
10:09
#24516
30K
18.64 mi14:29:383:07:1510:0333:17
10:43
#24333
20M
20.00 mi14:44:123:21:4910:0514:34
10:43
#24233
21M
21.00 mi14:56:223:33:5910:1112:10
12:10
#24200
35K
21.75 mi15:03:313:41:0810:107:09
9:33
#24093
23M
23.00 mi15:16:523:54:2910:1213:21
10:40
#23983
24M
24.00 mi15:26:234:04:0010:109:31
9:31
#23835
40K
24.85 mi15:34:514:12:2810:098:28
9:54
#23718
25.2M
25.20 mi15:39:014:16:3810:114:10
12:05
#23717
Finish
26.22 mi15:49:234:27:0010:1110:22
10:10
#23702
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi25153147981479824936(Top 88%)14694(Top 91%)14694(Top 616%)
10K6.21 mi3.10 mi25066+8714739+5914739+5925011(Top 88%)14707(Top 91%)14707(Top 616%)
15K9.32 mi3.11 mi25019+4714721+1814721+1824936(Top 88%)14694(Top 91%)14694(Top 616%)
20K12.43 mi3.11 mi24705+31414567+15414567+15423858(Top 84%)14162(Top 88%)14162(Top 594%)
Half13.11 mi0.68 mi24673+3214550+1714550+1724146(Top 85%)14295(Top 89%)14295(Top 599%)
25K15.53 mi2.42 mi24516+15714462+8814462+8823599(Top 83%)14007(Top 87%)14007(Top 587%)
30K18.64 mi3.11 mi24333+18314360+10214360+10223422(Top 82%)13798(Top 86%)13798(Top 578%)
20M20.00 mi1.36 mi24233+10014294+6614294+6622993(Top 81%)13519(Top 84%)13519(Top 567%)
21M21.00 mi1.00 mi24200+3314266+2814266+2823870(Top 84%)13854(Top 86%)13854(Top 581%)
35K21.75 mi0.75 mi24093+10714211+5514211+5520523(Top 72%)12227(Top 76%)12227(Top 512%)
23M23.00 mi1.25 mi23983+11014130+8114130+8122431(Top 79%)13074(Top 81%)13074(Top 548%)
24M24.00 mi1.00 mi23835+14814050+8014050+8019675(Top 69%)11714(Top 73%)11714(Top 491%)
40K24.85 mi0.85 mi23718+11713980+7013980+7020132(Top 71%)11859(Top 74%)11859(Top 497%)
25.2M25.20 mi0.35 mi23717+113975+513975+523390(Top 82%)13470(Top 84%)13470(Top 565%)
Finish26.22 mi1.02 mi23702+1513957+1813957+1823444(Top 83%)13486(Top 84%)13486(Top 565%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

24936

Males

14694

M45-49

14694

5K→10K

3.1 - 6.2 mi

Top 88%
×5story building
+79ft-138ft

Overall

25011

Males

14707

M45-49

14707

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

24936

Males

14694

M45-49

14694

15K→20K

9.3 - 12.4 mi

Top 84%
×5story building
+106ft-86ft

Overall

23858

Males

14162

M45-49

14162

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

24146

Males

14295

M45-49

14295

Half→25K

13.1 - 15.5 mi

Top 83%
×4story building
+66ft-88ft

Overall

23599

Males

14007

M45-49

14007

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

23422

Males

13798

M45-49

13798

30K→20M

18.6 - 20.0 mi

Top 81%
×5story building
+64ft-50ft

Overall

22993

Males

13519

M45-49

13519

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

23870

Males

13854

M45-49

13854

21M→35K

21.0 - 21.8 mi

Top 72%
×7story building
+17ft-86ft

Overall

20523

Males

12227

M45-49

12227

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

22431

Males

13074

M45-49

13074

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

19675

Males

11714

M45-49

11714

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

20132

Males

11859

M45-49

11859

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

23390

Males

13470

M45-49

13470

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

23444

Males

13486

M45-49

13486

Passing Analysis

Category:
Athletes Passed
1916
Passed By
465
Net Change
+1451
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25153
5K → 10K216129+87#25153#25066
10K → 15K148101+47#25066#25019
15K → 20K33824+314#25019#24705
20K → Half4210+32#24705#24673
Half → 25K18427+157#24673#24516
25K → 30K22946+183#24516#24333
30K → 20M12121+100#24333#24233
20M → 21M7744+33#24233#24200
21M → 35K1070+107#24200#24093
35K → 23M12717+110#24093#23983
23M → 24M1513+148#23983#23835
24M → 40K1203+117#23835#23718
40K → 25.2M1211+1#23718#23717
25.2M → Finish4429+15#23717#23702
TOTALS1916465+1451
📊

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