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BOSTON MARATHON 2025

Jakob Irwin

Bib: 7122•M

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 43%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 45%
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:35
Rank: #4829
Start → 5K
20:35 | 6:38/mi
10K· 6.21 mi
41:00
Rank: #4494 (+335)
5K → 10K
20:25 | 6:34/mi
15K· 9.32 mi
1:01:24
Rank: #4310 (+184)
10K → 15K
20:24 | 6:34/mi
20K· 12.43 mi
1:22:09
Rank: #4272 (+38)
15K → 20K
20:45 | 6:41/mi
Half· 13.11 mi
1:26:36
Rank: #4223 (+49)
20K → Half
4:27 | 6:31/mi
25K· 15.53 mi
1:44:09
Rank: #4850 (-627)
Half → 25K
17:33 | 7:14/mi
30K· 18.64 mi
2:11:21
Rank: #6970 (-2120)
25K → 30K
27:12 | 8:45/mi
20M
2:23:30
Rank: #7568 (-598)
30K → 20M
12:09 | 8:56/mi
21M
2:34:50
Rank: #8751 (-1183)
20M → 21M
11:20 | 11:20/mi
35K· 21.75 mi
2:41:23
Rank: #9098 (-347)
21M → 35K
6:33 | 8:45/mi
23M
2:53:17
Rank: #9785 (-687)
35K → 23M
11:54 | 9:30/mi
24M
3:03:34
Rank: #10608 (-823)
23M → 24M
10:17 | 10:17/mi
40K· 24.85 mi
3:12:42
Rank: #11290 (-682)
24M → 40K
9:08 | 10:41/mi
25.2M
3:16:35
Rank: #11548 (-258)
40K → 25.2M
3:53 | 11:16/mi
Finish· 26.22 mi
3:26:39
Rank: #12175 (-627)
25.2M → Finish
10:04 | 9:53/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:36
Pace6:36 /mi
2nd Half
Distance13.11 mi
Time2:00:03
Pace9:09 /mi
📊Positive Split: 38.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:3220:356:3820:35
6:38
-
10K
6.21 mi10:46:5741:006:3620:25
6:34
-0:04
15K
9.32 mi11:07:211:01:246:3520:24
6:34
0:00
20K
12.43 mi11:28:061:22:096:3720:45
6:41
+0:07
Half
13.11 mi11:32:331:26:366:364:27
6:31
-0:10
25K
15.53 mi11:50:061:44:096:4217:33
7:14
+0:43
30K
18.64 mi12:17:182:11:217:0327:12
8:45
+1:31
20M
20.00 mi12:29:272:23:307:1012:09
8:56
+0:11
21M
21.00 mi12:40:472:34:507:2211:20
11:20
+2:24
35K
21.75 mi12:47:202:41:237:256:33
8:45
-2:35
23M
23.00 mi12:59:142:53:177:3211:54
9:30
+0:45
24M
24.00 mi13:09:313:03:347:3910:17
10:17
+0:47
40K
24.85 mi13:18:393:12:427:459:08
10:41
+0:24
25.2M
25.20 mi13:22:323:16:357:483:53
11:16
+0:35
Finish
26.22 mi13:32:363:26:397:5310:04
9:53
-1:23

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

6:31 /mi

Average Pace

7:53 /mi

Slowest Pace

11:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:09

50% of race

Time at Steady Pace

57:48

28% of race

Time at Slower Pace

44:42

22% of race

Average Pace: 7:53 /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 mi10:26:3220:356:3820:35
6:38
#4829
10K
6.21 mi10:46:5741:006:3620:25
6:34
#4494
15K
9.32 mi11:07:211:01:246:3520:24
6:34
#4310
20K
12.43 mi11:28:061:22:096:3720:45
6:41
#4272
Half
13.11 mi11:32:331:26:366:364:27
6:31
#4223
25K
15.53 mi11:50:061:44:096:4217:33
7:14
#4850
30K
18.64 mi12:17:182:11:217:0327:12
8:45
#6970
20M
20.00 mi12:29:272:23:307:1012:09
8:56
#7568
21M
21.00 mi12:40:472:34:507:2211:20
11:20
#8751
35K
21.75 mi12:47:202:41:237:256:33
8:45
#9098
23M
23.00 mi12:59:142:53:177:3211:54
9:30
#9785
24M
24.00 mi13:09:313:03:347:3910:17
10:17
#10608
40K
24.85 mi13:18:393:12:427:459:08
10:41
#11290
25.2M
25.20 mi13:22:323:16:357:483:53
11:16
#11548
Finish
26.22 mi13:32:363:26:397:5310:04
9:53
#12175
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4829452245224006(Top 14%)3776(Top 23%)3776(Top 168%)
10K6.21 mi3.10 mi4494+3354224+2984224+2984250(Top 15%)3995(Top 25%)3995(Top 178%)
15K9.32 mi3.11 mi4310+1844054+1704054+1704006(Top 14%)3776(Top 23%)3776(Top 168%)
20K12.43 mi3.11 mi4272+384017+374017+374266(Top 15%)3994(Top 25%)3994(Top 178%)
Half13.11 mi0.68 mi4223+493971+463971+463902(Top 14%)3682(Top 23%)3682(Top 164%)
25K15.53 mi2.42 mi4850-6274510-5394510-5397901(Top 28%)6709(Top 42%)6709(Top 299%)
30K18.64 mi3.11 mi6970-21206189-16796189-167916311(Top 57%)10624(Top 66%)10624(Top 473%)
20M20.00 mi1.36 mi7568-5986565-3766565-37616445(Top 58%)10547(Top 65%)10547(Top 469%)
21M21.00 mi1.00 mi8751-11837262-6977262-69722211(Top 78%)13064(Top 81%)13064(Top 581%)
35K21.75 mi0.75 mi9098-3477433-1717433-17116979(Top 60%)10594(Top 66%)10594(Top 471%)
23M23.00 mi1.25 mi9785-6877761-3287761-32818702(Top 66%)11297(Top 70%)11297(Top 503%)
24M24.00 mi1.00 mi10608-8238135-3748135-37422166(Top 78%)12882(Top 80%)12882(Top 573%)
40K24.85 mi0.85 mi11290-6828421-2868421-28622370(Top 79%)12913(Top 80%)12913(Top 575%)
25.2M25.20 mi0.35 mi11548-2588534-1138534-11321357(Top 75%)12446(Top 77%)12446(Top 554%)
Finish26.22 mi1.02 mi12175-6278803-2698803-26922536(Top 79%)13040(Top 81%)13040(Top 580%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

4006

Males

3776

M40-44

3776

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

4250

Males

3995

M40-44

3995

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

4006

Males

3776

M40-44

3776

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

4266

Males

3994

M40-44

3994

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3902

Males

3682

M40-44

3682

Half→25K

13.1 - 15.5 mi

Top 28%
×4stories
+66ft-88ft

Overall

7901

Males

6709

M40-44

6709

25K→30K

15.5 - 18.6 mi

Top 57%
×9stories
+181ft-148ft

Overall

16311

Males

10624

M40-44

10624

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

16445

Males

10547

M40-44

10547

20M→21M

20.0 - 21.0 mi

Top 78%
×8stories
+106ft-24ft

Overall

22211

Males

13064

M40-44

13064

21M→35K

21.0 - 21.8 mi

Top 60%
×7stories
+17ft-86ft

Overall

16979

Males

10594

M40-44

10594

35K→23M

21.8 - 23.0 mi

Top 66%
×5stories
+23ft-63ft

Overall

18702

Males

11297

M40-44

11297

23M→24M

23.0 - 24.0 mi

Top 78%
×6stories
+12ft-82ft

Overall

22166

Males

12882

M40-44

12882

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

22370

Males

12913

M40-44

12913

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

21357

Males

12446

M40-44

12446

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2stories
+22ft-21ft

Overall

22536

Males

13040

M40-44

13040

Passing Analysis

Category:
Athletes Passed
884
Passed By
8228
Net Change
-7346
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4829
5K → 10K38348+335#4829#4494
10K → 15K21834+184#4494#4310
15K → 20K11577+38#4310#4272
20K → Half523+49#4272#4223
Half → 25K23650-627#4223#4850
25K → 30K112131-2120#4850#6970
30K → 20M19617-598#6970#7568
20M → 21M41187-1183#7568#8751
21M → 35K13360-347#8751#9098
35K → 23M15702-687#9098#9785
23M → 24M12833-823#9785#10608
24M → 40K5687-682#10608#11290
40K → 25.2M7265-258#11290#11548
25.2M → Finish7634-627#11548#12175
TOTALS8848228-7346
📊

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