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BOSTON MARATHON 2025

Stephen Barron

Bib: 12179•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 41%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 43%
Division (M50-54)
#0 / 1996
Top 46%
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
7:15/mi
22:33
↑ 97↓ 3451.5%
10K· 6.21 mi
7:39/mi
46:18
↑ 79↓ 1380.4%
15K· 9.32 mi
7:44/mi
1:10:19
↑ 67↓ 78
20K· 12.43 mi
7:46/mi
1:34:26
↑ 106↓ 860.1%
Half· 13.11 mi
7:40/mi
1:39:40
↑ 19↓ 370.5%
25K· 15.53 mi
7:52/mi
1:58:44
↑ 66↓ 880.2%
30K· 18.64 mi
8:11/mi
2:24:08
↑ 181↓ 1480.2%
20M
8:03/mi
2:35:04
↑ 64↓ 500.2%
21M
8:26/mi
2:43:30
↑ 106↓ 241.6%
35K· 21.75 mi
8:09/mi
2:49:36
↑ 17↓ 861.7%
23M
8:02/mi
2:59:40
↑ 23↓ 630.6%
24M
7:47/mi
3:07:27
↓ 821.3%
40K· 24.85 mi
7:58/mi
3:14:16
↓ 200.3%
25.2M
8:19/mi
3:17:08
↑ 13↓ 160.2%
Finish· 26.22 mi
7:21/mi
3:24:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:40
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time1:44:57
Pace8:00 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0222:337:1522:33
7:15
-
10K
6.21 mi11:14:4746:187:2723:45
7:39
+0:24
15K
9.32 mi11:38:481:10:197:3324:01
7:44
+0:05
20K
12.43 mi12:02:551:34:267:3624:07
7:46
+0:02
Half
13.11 mi12:08:091:39:407:365:14
7:40
-0:06
25K
15.53 mi12:27:131:58:447:3919:04
7:52
+0:12
30K
18.64 mi12:52:372:24:087:4425:24
8:11
+0:19
20M
20.00 mi13:03:332:35:047:4510:56
8:03
-0:08
21M
21.00 mi13:11:592:43:307:478:26
8:26
+0:23
35K
21.75 mi13:18:052:49:367:486:06
8:09
-0:17
23M
23.00 mi13:28:092:59:407:4910:04
8:02
-0:07
24M
24.00 mi13:35:563:07:277:497:47
7:47
-0:15
40K
24.85 mi13:42:453:14:167:496:49
7:58
+0:11
25.2M
25.20 mi13:45:373:17:087:492:52
8:19
+0:21
Finish
26.22 mi13:53:063:24:377:497:29
7:21
-0:58

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

7:15 /mi

Average Pace

7:49 /mi

Slowest Pace

8:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:49

69% of race

Time at Steady Pace

1:03:48

31% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:48 /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 mi10:51:0222:337:1522:33
7:15
#9955
10K
6.21 mi11:14:4746:187:2723:45
7:39
#11698
15K
9.32 mi11:38:481:10:197:3324:01
7:44
#12371
20K
12.43 mi12:02:551:34:267:3624:07
7:46
#12477
Half
13.11 mi12:08:091:39:407:365:14
7:40
#12515
25K
15.53 mi12:27:131:58:447:3919:04
7:52
#12542
30K
18.64 mi12:52:372:24:087:4425:24
8:11
#12521
20M
20.00 mi13:03:332:35:047:4510:56
8:03
#12356
21M
21.00 mi13:11:592:43:307:478:26
8:26
#12181
35K
21.75 mi13:18:052:49:367:486:06
8:09
#12207
23M
23.00 mi13:28:092:59:407:4910:04
8:02
#12051
24M
24.00 mi13:35:563:07:277:497:47
7:47
#11925
40K
24.85 mi13:42:453:14:167:496:49
7:58
#11824
25.2M
25.20 mi13:45:373:17:087:492:52
8:19
#11742
Finish
26.22 mi13:53:063:24:377:497:29
7:21
#11547
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi99558145814513766(Top 48%)9841(Top 61%)9841(Top 493%)
10K6.21 mi3.10 mi11698-17439019-8749019-87413394(Top 47%)9749(Top 61%)9749(Top 488%)
15K9.32 mi3.11 mi12371-6739302-2839302-28313766(Top 48%)9841(Top 61%)9841(Top 493%)
20K12.43 mi3.11 mi12477-1069307-59307-512944(Top 46%)9389(Top 58%)9389(Top 470%)
Half13.11 mi0.68 mi12515-389323-169323-1613095(Top 46%)9494(Top 59%)9494(Top 476%)
25K15.53 mi2.42 mi12542-279291+329291+3212844(Top 45%)9217(Top 57%)9217(Top 462%)
30K18.64 mi3.11 mi12521+219209+829209+8212623(Top 44%)8958(Top 56%)8958(Top 449%)
20M20.00 mi1.36 mi12356+1659101+1089101+10810729(Top 38%)7906(Top 49%)7906(Top 396%)
21M21.00 mi1.00 mi12181+1758978+1238978+12310044(Top 35%)7395(Top 46%)7395(Top 370%)
35K21.75 mi0.75 mi12207-268965+138965+1313252(Top 47%)8908(Top 55%)8908(Top 446%)
23M23.00 mi1.25 mi12051+1568863+1028863+10210314(Top 36%)7398(Top 46%)7398(Top 371%)
24M24.00 mi1.00 mi11925+1268764+998764+999677(Top 34%)7009(Top 44%)7009(Top 351%)
40K24.85 mi0.85 mi11824+1018680+848680+849988(Top 35%)7044(Top 44%)7044(Top 353%)
25.2M25.20 mi0.35 mi11742+828627+538627+537714(Top 27%)5773(Top 36%)5773(Top 289%)
Finish26.22 mi1.02 mi11547+1958488+1398488+1398073(Top 28%)5958(Top 37%)5958(Top 298%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21story building
+97ft-345ft

Overall

13766

Males

9841

M50-54

9841

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

13394

Males

9749

M50-54

9749

10K→15K

6.2 - 9.3 mi

Top 48%
×3story building
+67ft-78ft

Overall

13766

Males

9841

M50-54

9841

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

12944

Males

9389

M50-54

9389

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

13095

Males

9494

M50-54

9494

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12844

Males

9217

M50-54

9217

25K→30K

15.5 - 18.6 mi

Top 44%
×9story building
+181ft-148ft

Overall

12623

Males

8958

M50-54

8958

30K→20M

18.6 - 20.0 mi

Top 38%
×5story building
+64ft-50ft

Overall

10729

Males

7906

M50-54

7906

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

10044

Males

7395

M50-54

7395

21M→35K

21.0 - 21.8 mi

Top 47%
×7story building
+17ft-86ft

Overall

13252

Males

8908

M50-54

8908

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

10314

Males

7398

M50-54

7398

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

9677

Males

7009

M50-54

7009

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9988

Males

7044

M50-54

7044

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7714

Males

5773

M50-54

5773

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2story building
+22ft-21ft

Overall

8073

Males

5958

M50-54

5958

Passing Analysis

Category:
Athletes Passed
1837
Passed By
3427
Net Change
-1592
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9955
5K → 10K51746-1743#9955#11698
10K → 15K49722-673#11698#12371
15K → 20K151257-106#12371#12477
20K → Half2159-38#12477#12515
Half → 25K146173-27#12515#12542
25K → 30K251230+21#12542#12521
30K → 20M19631+165#12521#12356
20M → 21M20732+175#12356#12181
21M → 35K5278-26#12181#12207
35K → 23M18731+156#12207#12051
23M → 24M14519+126#12051#11925
24M → 40K12827+101#11925#11824
40K → 25.2M897+82#11824#11742
25.2M → Finish21015+195#11742#11547
TOTALS18373427-1592
📊

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