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BOSTON MARATHON 2025

Sean Isberg

Bib: 31205•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

Start
0:00:00
Race begins
5K· 3.11 mi
27:16
Rank: #21379
Start → 5K
27:16 | 8:47/mi
10K· 6.21 mi
54:48
Rank: #21548 (-169)
5K → 10K
27:32 | 8:52/mi
15K· 9.32 mi
1:22:16
Rank: #21406 (+142)
10K → 15K
27:28 | 8:50/mi
20K· 12.43 mi
1:51:26
Rank: #21786 (-380)
15K → 20K
29:10 | 9:23/mi
Half· 13.11 mi
1:57:41
Rank: #21812 (-26)
20K → Half
6:15 | 9:10/mi
25K· 15.53 mi
2:22:05
Rank: #22223 (-411)
Half → 25K
24:24 | 10:04/mi
30K· 18.64 mi
2:56:19
Rank: #22679 (-456)
25K → 30K
34:14 | 11:01/mi
20M
3:11:43
Rank: #22816 (-137)
30K → 20M
15:24 | 11:20/mi
21M
3:25:08
Rank: #23066 (-250)
20M → 21M
13:25 | 13:25/mi
35K· 21.75 mi
3:33:03
Rank: #23070 (-4)
21M → 35K
7:55 | 10:35/mi
23M
3:48:16
Rank: #23266 (-196)
35K → 23M
15:13 | 12:09/mi
24M
3:59:53
Rank: #23373 (-107)
23M → 24M
11:37 | 11:37/mi
40K· 24.85 mi
4:09:55
Rank: #23419 (-46)
24M → 40K
10:02 | 11:44/mi
25.2M
4:13:42
Rank: #23371 (+48)
40K → 25.2M
3:47 | 10:58/mi
Finish· 26.22 mi
4:23:21
Rank: #23303 (+68)
25.2M → Finish
9:39 | 9:28/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:41
Pace8:59 /mi
2nd Half
Distance13.11 mi
Time2:25:40
Pace11:07 /mi
📊Positive Split: 23.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:0627:168:4727:16
8:47
-
10K
6.21 mi12:17:3854:488:4927:32
8:52
+0:05
15K
9.32 mi12:45:061:22:168:5027:28
8:50
-0:02
20K
12.43 mi13:14:161:51:268:5829:10
9:23
+0:33
Half
13.11 mi13:20:311:57:418:596:15
9:10
-0:13
25K
15.53 mi13:44:552:22:059:0924:24
10:04
+0:54
30K
18.64 mi14:19:092:56:199:2834:14
11:01
+0:57
20M
20.00 mi14:34:333:11:439:3515:24
11:20
+0:19
21M
21.00 mi14:47:583:25:089:4613:25
13:25
+2:05
35K
21.75 mi14:55:533:33:039:487:55
10:35
-2:50
23M
23.00 mi15:11:063:48:169:5515:13
12:09
+1:34
24M
24.00 mi15:22:433:59:5310:0011:37
11:37
-0:32
40K
24.85 mi15:32:454:09:5510:0310:02
11:44
+0:07
25.2M
25.20 mi15:36:324:13:4210:043:47
10:58
-0:46
Finish
26.22 mi15:46:114:23:2110:039:39
9:28
-1:30

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

8:47 /mi

Average Pace

10:03 /mi

Slowest Pace

13:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:20

48% of race

Time at Steady Pace

1:10:20

27% of race

Time at Slower Pace

1:05:41

25% of race

Average Pace: 10:03 /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 mi11:50:0627:168:4727:16
8:47
#21379
10K
6.21 mi12:17:3854:488:4927:32
8:52
#21548
15K
9.32 mi12:45:061:22:168:5027:28
8:50
#21406
20K
12.43 mi13:14:161:51:268:5829:10
9:23
#21786
Half
13.11 mi13:20:311:57:418:596:15
9:10
#21812
25K
15.53 mi13:44:552:22:059:0924:24
10:04
#22223
30K
18.64 mi14:19:092:56:199:2834:14
11:01
#22679
20M
20.00 mi14:34:333:11:439:3515:24
11:20
#22816
21M
21.00 mi14:47:583:25:089:4613:25
13:25
#23066
35K
21.75 mi14:55:533:33:039:487:55
10:35
#23070
23M
23.00 mi15:11:063:48:169:5515:13
12:09
#23266
24M
24.00 mi15:22:433:59:5310:0011:37
11:37
#23373
40K
24.85 mi15:32:454:09:5510:0310:02
11:44
#23419
25.2M
25.20 mi15:36:324:13:4210:043:47
10:58
#23371
Finish
26.22 mi15:46:114:23:2110:039:39
9:28
#23303
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21379130351303521235(Top 75%)13051(Top 81%)13051(Top 231%)
10K6.21 mi3.10 mi21548-16913125-9013125-9021695(Top 76%)13217(Top 82%)13217(Top 234%)
15K9.32 mi3.11 mi21406+14213095+3013095+3021235(Top 75%)13051(Top 81%)13051(Top 231%)
20K12.43 mi3.11 mi21786-38013239-14413239-14422536(Top 79%)13595(Top 84%)13595(Top 241%)
Half13.11 mi0.68 mi21812-2613255-1613255-1622450(Top 79%)13541(Top 84%)13541(Top 240%)
25K15.53 mi2.42 mi22223-41113441-18613441-18623415(Top 82%)13918(Top 86%)13918(Top 247%)
30K18.64 mi3.11 mi22679-45613612-17113612-17124030(Top 85%)14093(Top 88%)14093(Top 250%)
20M20.00 mi1.36 mi22816-13713643-3113643-3124241(Top 85%)14093(Top 88%)14093(Top 250%)
21M21.00 mi1.00 mi23066-25013745-10213745-10225570(Top 90%)14660(Top 91%)14660(Top 260%)
35K21.75 mi0.75 mi23070-413734+1113734+1123332(Top 82%)13552(Top 84%)13552(Top 240%)
23M23.00 mi1.25 mi23266-19613796-6213796-6225328(Top 89%)14499(Top 90%)14499(Top 257%)
24M24.00 mi1.00 mi23373-10713834-3813834-3825088(Top 88%)14348(Top 89%)14348(Top 254%)
40K24.85 mi0.85 mi23419-4613846-1213846-1224525(Top 86%)14028(Top 87%)14028(Top 249%)
25.2M25.20 mi0.35 mi23371+4813810+3613810+3620529(Top 72%)12062(Top 75%)12062(Top 214%)
Finish26.22 mi1.02 mi23303+6813766+4413766+4421066(Top 74%)12327(Top 77%)12327(Top 218%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21stories
+97ft-345ft

Overall

21235

Males

13051

M18-39

13051

5K→10K

3.1 - 6.2 mi

Top 76%
×5stories
+79ft-138ft

Overall

21695

Males

13217

M18-39

13217

10K→15K

6.2 - 9.3 mi

Top 75%
×3stories
+67ft-78ft

Overall

21235

Males

13051

M18-39

13051

15K→20K

9.3 - 12.4 mi

Top 79%
×5stories
+106ft-86ft

Overall

22536

Males

13595

M18-39

13595

20K→Half

12.4 - 13.1 mi

Top 79%
×2stories
+19ft-37ft

Overall

22450

Males

13541

M18-39

13541

Half→25K

13.1 - 15.5 mi

Top 82%
×4stories
+66ft-88ft

Overall

23415

Males

13918

M18-39

13918

25K→30K

15.5 - 18.6 mi

Top 85%
×9stories
+181ft-148ft

Overall

24030

Males

14093

M18-39

14093

30K→20M

18.6 - 20.0 mi

Top 85%
×5stories
+64ft-50ft

Overall

24241

Males

14093

M18-39

14093

20M→21M

20.0 - 21.0 mi

Top 90%
×8stories
+106ft-24ft

Overall

25570

Males

14660

M18-39

14660

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

23332

Males

13552

M18-39

13552

35K→23M

21.8 - 23.0 mi

Top 89%
×5stories
+23ft-63ft

Overall

25328

Males

14499

M18-39

14499

23M→24M

23.0 - 24.0 mi

Top 88%
×6stories
+12ft-82ft

Overall

25088

Males

14348

M18-39

14348

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

24525

Males

14028

M18-39

14028

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

20529

Males

12062

M18-39

12062

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

21066

Males

12327

M18-39

12327

Passing Analysis

Category:
Athletes Passed
1063
Passed By
2987
Net Change
-1924
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21379
5K → 10K212381-169#21379#21548
10K → 15K286144+142#21548#21406
15K → 20K94474-380#21406#21786
20K → Half2551-26#21786#21812
Half → 25K49460-411#21812#22223
25K → 30K72528-456#22223#22679
30K → 20M47184-137#22679#22816
20M → 21M12262-250#22816#23066
21M → 35K3943-4#23066#23070
35K → 23M28224-196#23070#23266
23M → 24M23130-107#23266#23373
24M → 40K3884-46#23373#23419
40K → 25.2M568+48#23419#23371
25.2M → Finish8214+68#23371#23303
TOTALS10632987-1924
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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