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BOSTON MARATHON 2025

David Issenberg

Bib: 25707•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
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
8:05/mi
25:08
↑ 97↓ 3451.5%
10K· 6.21 mi
8:01/mi
50:01
↑ 79↓ 1380.4%
15K· 9.32 mi
8:01/mi
1:14:56
↑ 67↓ 78
20K· 12.43 mi
8:03/mi
1:39:58
↑ 106↓ 860.1%
Half· 13.11 mi
8:01/mi
1:45:26
↑ 19↓ 370.5%
25K· 15.53 mi
8:05/mi
2:05:03
↑ 66↓ 880.2%
30K· 18.64 mi
8:21/mi
2:30:58
↑ 181↓ 1480.2%
20M
9:10/mi
2:43:26
↑ 64↓ 500.2%
21M
9:48/mi
2:53:14
↑ 106↓ 241.6%
35K· 21.75 mi
9:07/mi
3:00:03
↑ 17↓ 861.7%
23M
9:35/mi
3:12:03
↑ 23↓ 630.6%
24M
9:47/mi
3:21:50
↓ 821.3%
40K· 24.85 mi
9:34/mi
3:30:01
↓ 200.3%
25.2M
10:32/mi
3:33:39
↑ 13↓ 160.2%
Finish· 26.22 mi
8:49/mi
3:42:38
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:26
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:57:12
Pace8:56 /mi
📊Positive Split: 11.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:40:3025:088:0525:08
8:05
-
10K
6.21 mi12:05:2350:018:0324:53
8:01
-0:04
15K
9.32 mi12:30:181:14:568:0224:55
8:01
0:00
20K
12.43 mi12:55:201:39:588:0325:02
8:03
+0:02
Half
13.11 mi13:00:481:45:268:035:28
8:01
-0:02
25K
15.53 mi13:20:252:05:038:0319:37
8:05
+0:04
30K
18.64 mi13:46:202:30:588:0625:55
8:21
+0:16
20M
20.00 mi13:58:482:43:268:1012:28
9:10
+0:49
21M
21.00 mi14:08:362:53:148:159:48
9:48
+0:38
35K
21.75 mi14:15:253:00:038:176:49
9:07
-0:41
23M
23.00 mi14:27:253:12:038:2112:00
9:35
+0:28
24M
24.00 mi14:37:123:21:508:259:47
9:47
+0:12
40K
24.85 mi14:45:233:30:018:278:11
9:34
-0:13
25.2M
25.20 mi14:49:013:33:398:293:38
10:32
+0:58
Finish
26.22 mi14:58:003:42:388:308:59
8:49
-1:43

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

8:01 /mi

Average Pace

8:30 /mi

Slowest Pace

10:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:30:58

68% of race

Time at Steady Pace

28:16

13% of race

Time at Slower Pace

43:24

19% of race

Average Pace: 8:29 /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 mi11:40:3025:088:0525:08
8:05
#17273
10K
6.21 mi12:05:2350:018:0324:53
8:01
#16893
15K
9.32 mi12:30:181:14:568:0224:55
8:01
#16636
20K
12.43 mi12:55:201:39:588:0325:02
8:03
#16270
Half
13.11 mi13:00:481:45:268:035:28
8:01
#16245
25K
15.53 mi13:20:252:05:038:0319:37
8:05
#15946
30K
18.64 mi13:46:202:30:588:0625:55
8:21
#15496
20M
20.00 mi13:58:482:43:268:1012:28
9:10
#15639
21M
21.00 mi14:08:362:53:148:159:48
9:48
#15746
35K
21.75 mi14:15:253:00:038:176:49
9:07
#15818
23M
23.00 mi14:27:253:12:038:2112:00
9:35
#16011
24M
24.00 mi14:37:123:21:508:259:47
9:47
#16259
40K
24.85 mi14:45:233:30:018:278:11
9:34
#16391
25.2M
25.20 mi14:49:013:33:398:293:38
10:32
#16469
Finish
26.22 mi14:58:003:42:388:308:59
8:49
#16530
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi17273113181131816189(Top 57%)10895(Top 68%)10895(Top 193%)
10K6.21 mi3.10 mi16893+38011182+13611182+13616546(Top 58%)11049(Top 69%)11049(Top 196%)
15K9.32 mi3.11 mi16636+25711082+10011082+10016189(Top 57%)10895(Top 68%)10895(Top 193%)
20K12.43 mi3.11 mi16270+36610913+16910913+16915329(Top 54%)10469(Top 65%)10469(Top 186%)
Half13.11 mi0.68 mi16245+2510894+1910894+1915953(Top 56%)10756(Top 67%)10756(Top 191%)
25K15.53 mi2.42 mi15946+29910767+12710767+12714573(Top 51%)10013(Top 62%)10013(Top 177%)
30K18.64 mi3.11 mi15496+45010504+26310504+26313755(Top 48%)9491(Top 59%)9491(Top 168%)
20M20.00 mi1.36 mi15639-14310535-3110535-3117640(Top 62%)11096(Top 69%)11096(Top 197%)
21M21.00 mi1.00 mi15746-10710537-210537-217454(Top 61%)10894(Top 68%)10894(Top 193%)
35K21.75 mi0.75 mi15818-7210559-2210559-2218735(Top 66%)11361(Top 71%)11361(Top 201%)
23M23.00 mi1.25 mi16011-19310597-3810597-3819012(Top 67%)11442(Top 71%)11442(Top 203%)
24M24.00 mi1.00 mi16259-24810690-9310690-9320655(Top 73%)12176(Top 76%)12176(Top 216%)
40K24.85 mi0.85 mi16391-13210718-2810718-2818966(Top 67%)11297(Top 70%)11297(Top 200%)
25.2M25.20 mi0.35 mi16469-7810746-2810746-2819088(Top 67%)11346(Top 70%)11346(Top 201%)
Finish26.22 mi1.02 mi16530-6110740+610740+618114(Top 64%)10921(Top 68%)10921(Top 194%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

16189

Males

10895

M18-39

10895

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

16546

Males

11049

M18-39

11049

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

16189

Males

10895

M18-39

10895

15K→20K

9.3 - 12.4 mi

Top 54%
×5story building
+106ft-86ft

Overall

15329

Males

10469

M18-39

10469

20K→Half

12.4 - 13.1 mi

Top 56%
×2story building
+19ft-37ft

Overall

15953

Males

10756

M18-39

10756

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

14573

Males

10013

M18-39

10013

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

13755

Males

9491

M18-39

9491

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

17640

Males

11096

M18-39

11096

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

17454

Males

10894

M18-39

10894

21M→35K

21.0 - 21.8 mi

Top 66%
×7story building
+17ft-86ft

Overall

18735

Males

11361

M18-39

11361

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

19012

Males

11442

M18-39

11442

23M→24M

23.0 - 24.0 mi

Top 73%
×6story building
+12ft-82ft

Overall

20655

Males

12176

M18-39

12176

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

18966

Males

11297

M18-39

11297

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

19088

Males

11346

M18-39

11346

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

18114

Males

10921

M18-39

10921

Passing Analysis

Category:
Athletes Passed
2564
Passed By
1821
Net Change
+743
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17273
5K → 10K530150+380#17273#16893
10K → 15K34285+257#16893#16636
15K → 20K42155+366#16636#16270
20K → Half4520+25#16270#16245
Half → 25K33031+299#16245#15946
25K → 30K48838+450#15946#15496
30K → 20M89232-143#15496#15639
20M → 21M79186-107#15639#15746
21M → 35K44116-72#15746#15818
35K → 23M68261-193#15818#16011
23M → 24M23271-248#16011#16259
24M → 40K31163-132#16259#16391
40K → 25.2M1492-78#16391#16469
25.2M → Finish60121-61#16469#16530
TOTALS25641821+743
📊

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