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BOSTON MARATHON 2025

Joel Koffman

Bib: 25277•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M75-79)
#0 / 52
Top 13%
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
8:36/mi
26:43
↑ 97↓ 3451.5%
10K· 6.21 mi
8:36/mi
53:26
↑ 79↓ 1380.4%
15K· 9.32 mi
8:45/mi
1:20:36
↑ 67↓ 78
20K· 12.43 mi
9:03/mi
1:48:42
↑ 106↓ 860.1%
Half· 13.11 mi
8:48/mi
1:54:42
↑ 19↓ 370.5%
25K· 15.53 mi
9:22/mi
2:17:25
↑ 66↓ 880.2%
30K· 18.64 mi
10:04/mi
2:48:41
↑ 181↓ 1480.2%
20M
10:09/mi
3:02:28
↑ 64↓ 500.2%
21M
11:06/mi
3:13:34
↑ 106↓ 241.6%
35K· 21.75 mi
10:01/mi
3:21:04
↑ 17↓ 861.7%
23M
10:48/mi
3:34:35
↑ 23↓ 630.6%
24M
10:33/mi
3:45:08
↓ 821.3%
40K· 24.85 mi
11:04/mi
3:54:36
↓ 200.3%
25.2M
12:46/mi
3:59:00
↑ 13↓ 160.2%
Finish· 26.22 mi
10:43/mi
4:09:55
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:42
Pace8:45 /mi
2nd Half
Distance13.11 mi
Time2:15:13
Pace10:19 /mi
📊Positive Split: 17.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:1726:438:3626:43
8:36
-
10K
6.21 mi11:54:0053:268:3626:43
8:36
0:00
15K
9.32 mi12:21:101:20:368:3927:10
8:45
+0:09
20K
12.43 mi12:49:161:48:428:4528:06
9:03
+0:18
Half
13.11 mi12:55:161:54:428:456:00
8:48
-0:15
25K
15.53 mi13:17:592:17:258:5122:43
9:22
+0:34
30K
18.64 mi13:49:152:48:419:0331:16
10:04
+0:42
20M
20.00 mi14:03:023:02:289:0713:47
10:09
+0:05
21M
21.00 mi14:14:083:13:349:1311:06
11:06
+0:57
35K
21.75 mi14:21:383:21:049:157:30
10:01
-1:05
23M
23.00 mi14:35:093:34:359:2013:31
10:48
+0:47
24M
24.00 mi14:45:423:45:089:2310:33
10:33
-0:15
40K
24.85 mi14:55:103:54:369:269:28
11:04
+0:31
25.2M
25.20 mi14:59:343:59:009:294:24
12:46
+1:42
Finish
26.22 mi15:10:294:09:559:3210:55
10:43
-2:03

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

8:36 /mi

Average Pace

9:32 /mi

Slowest Pace

12:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:25

55% of race

Time at Steady Pace

1:03:06

25% of race

Time at Slower Pace

49:24

20% of race

Average Pace: 9:32 /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 mi11:27:1726:438:3626:43
8:36
#20452
10K
6.21 mi11:54:0053:268:3626:43
8:36
#20392
15K
9.32 mi12:21:101:20:368:3927:10
8:45
#20467
20K
12.43 mi12:49:161:48:428:4528:06
9:03
#20664
Half
13.11 mi12:55:161:54:428:456:00
8:48
#20667
25K
15.53 mi13:17:592:17:258:5122:43
9:22
#20849
30K
18.64 mi13:49:152:48:419:0331:16
10:04
#21102
20M
20.00 mi14:03:023:02:289:0713:47
10:09
#21129
21M
21.00 mi14:14:083:13:349:1311:06
11:06
#21210
35K
21.75 mi14:21:383:21:049:157:30
10:01
#21229
23M
23.00 mi14:35:093:34:359:2013:31
10:48
#21351
24M
24.00 mi14:45:423:45:089:2310:33
10:33
#21429
40K
24.85 mi14:55:103:54:369:269:28
11:04
#21523
25.2M
25.20 mi14:59:343:59:009:294:24
12:46
#21588
Finish
26.22 mi15:10:294:09:559:3210:55
10:43
#21727
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM75-79Seg. OverallSeg. MalesSeg. M75-79
5K3.11 mi3.11 mi20452126211262120715(Top 73%)12821(Top 80%)12821(Top 24656%)
10K6.21 mi3.10 mi20392+6012630-912630-920346(Top 72%)12630(Top 78%)12630(Top 24288%)
15K9.32 mi3.11 mi20467-7512677-4712677-4720715(Top 73%)12821(Top 80%)12821(Top 24656%)
20K12.43 mi3.11 mi20664-19712759-8212759-8221195(Top 75%)12983(Top 81%)12983(Top 24967%)
Half13.11 mi0.68 mi20667-312756+312756+320867(Top 73%)12843(Top 80%)12843(Top 24698%)
25K15.53 mi2.42 mi20849-18212837-8112837-8121426(Top 75%)13049(Top 81%)13049(Top 25094%)
30K18.64 mi3.11 mi21102-25312905-6812905-6821773(Top 77%)13060(Top 81%)13060(Top 25115%)
20M20.00 mi1.36 mi21129-2712891+1412891+1421409(Top 75%)12773(Top 79%)12773(Top 24563%)
21M21.00 mi1.00 mi21210-8112915-2412915-2421655(Top 76%)12810(Top 80%)12810(Top 24635%)
35K21.75 mi0.75 mi21229-19129151291521952(Top 77%)12878(Top 80%)12878(Top 24765%)
23M23.00 mi1.25 mi21351-12212946-3112946-3122735(Top 80%)13215(Top 82%)13215(Top 25413%)
24M24.00 mi1.00 mi21429-7812966-2012966-2022948(Top 81%)13280(Top 82%)13280(Top 25538%)
40K24.85 mi0.85 mi21523-9412979-1312979-1323307(Top 82%)13398(Top 83%)13398(Top 25765%)
25.2M25.20 mi0.35 mi21588-6512997-1812997-1824654(Top 87%)14089(Top 87%)14089(Top 27094%)
Finish26.22 mi1.02 mi21727-13913037-4013037-4024749(Top 87%)14146(Top 88%)14146(Top 27204%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21story building
+97ft-345ft

Overall

20715

Males

12821

M75-79

12821

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

20346

Males

12630

M75-79

12630

10K→15K

6.2 - 9.3 mi

Top 73%
×3story building
+67ft-78ft

Overall

20715

Males

12821

M75-79

12821

15K→20K

9.3 - 12.4 mi

Top 75%
×5story building
+106ft-86ft

Overall

21195

Males

12983

M75-79

12983

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

20867

Males

12843

M75-79

12843

Half→25K

13.1 - 15.5 mi

Top 75%
×4story building
+66ft-88ft

Overall

21426

Males

13049

M75-79

13049

25K→30K

15.5 - 18.6 mi

Top 77%
×9story building
+181ft-148ft

Overall

21773

Males

13060

M75-79

13060

30K→20M

18.6 - 20.0 mi

Top 75%
×5story building
+64ft-50ft

Overall

21409

Males

12773

M75-79

12773

20M→21M

20.0 - 21.0 mi

Top 76%
×8story building
+106ft-24ft

Overall

21655

Males

12810

M75-79

12810

21M→35K

21.0 - 21.8 mi

Top 77%
×7story building
+17ft-86ft

Overall

21952

Males

12878

M75-79

12878

35K→23M

21.8 - 23.0 mi

Top 80%
×5story building
+23ft-63ft

Overall

22735

Males

13215

M75-79

13215

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

22948

Males

13280

M75-79

13280

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

23307

Males

13398

M75-79

13398

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

24654

Males

14089

M75-79

14089

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

24749

Males

14146

M75-79

14146

Passing Analysis

Category:
Athletes Passed
1225
Passed By
2500
Net Change
-1275
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20452
5K → 10K317257+60#20452#20392
10K → 15K159234-75#20392#20467
15K → 20K127324-197#20467#20664
20K → Half3538-3#20664#20667
Half → 25K96278-182#20667#20849
25K → 30K139392-253#20849#21102
30K → 20M95122-27#21102#21129
20M → 21M63144-81#21129#21210
21M → 35K5271-19#21210#21229
35K → 23M60182-122#21229#21351
23M → 24M31109-78#21351#21429
24M → 40K27121-94#21429#21523
40K → 25.2M873-65#21523#21588
25.2M → Finish16155-139#21588#21727
TOTALS12252500-1275
📊

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