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BOSTON MARATHON 2025

Jonathan Corso

Bib: 12398•M

GA

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 46%
Division (M55-59)
#0 / 1648
Top 32%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:29
Rank: #15500
Start → 5K
24:29 | 7:53/mi
10K· 6.21 mi
48:45
Rank: #15191 (+309)
5K → 10K
24:16 | 7:49/mi
15K· 9.32 mi
1:13:09
Rank: #15055 (+136)
10K → 15K
24:24 | 7:51/mi
20K· 12.43 mi
1:38:06
Rank: #15038 (+17)
15K → 20K
24:57 | 8:02/mi
Half· 13.11 mi
1:43:36
Rank: #15109 (-71)
20K → Half
5:30 | 8:04/mi
25K· 15.53 mi
2:03:34
Rank: #15191 (-82)
Half → 25K
19:58 | 8:14/mi
30K· 18.64 mi
2:29:01
Rank: #14674 (+517)
25K → 30K
25:27 | 8:11/mi
20M
2:39:32
Rank: #14124 (+550)
30K → 20M
10:31 | 7:44/mi
21M
2:47:36
Rank: #13700 (+424)
20M → 21M
8:04 | 8:04/mi
35K· 21.75 mi
2:53:12
Rank: #13503 (+197)
21M → 35K
5:36 | 7:29/mi
23M
3:02:45
Rank: #13109 (+394)
35K → 23M
9:33 | 7:38/mi
24M
3:10:19
Rank: #12866 (+243)
23M → 24M
7:34 | 7:34/mi
40K· 24.85 mi
3:16:57
Rank: #12678 (+188)
24M → 40K
6:38 | 7:45/mi
25.2M
3:19:46
Rank: #12566 (+112)
40K → 25.2M
2:49 | 8:10/mi
Finish· 26.22 mi
3:27:07
Rank: #12306 (+260)
25.2M → Finish
7:21 | 7:13/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:43:36
Pace7:54 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:43:31
Pace7:54 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:4124:297:5324:29
7:53
-
10K
6.21 mi11:39:5748:457:5124:16
7:49
-0:04
15K
9.32 mi12:04:211:13:097:5124:24
7:51
+0:02
20K
12.43 mi12:29:181:38:067:5424:57
8:02
+0:11
Half
13.11 mi12:34:481:43:367:545:30
8:04
+0:02
25K
15.53 mi12:54:462:03:347:5719:58
8:14
+0:10
30K
18.64 mi13:20:132:29:018:0025:27
8:11
-0:03
20M
20.00 mi13:30:442:39:327:5910:31
7:44
-0:27
21M
21.00 mi13:38:482:47:367:598:04
8:04
+0:20
35K
21.75 mi13:44:242:53:127:585:36
7:29
-0:35
23M
23.00 mi13:53:573:02:457:579:33
7:38
+0:09
24M
24.00 mi14:01:313:10:197:567:34
7:34
-0:04
40K
24.85 mi14:08:093:16:577:556:38
7:45
+0:11
25.2M
25.20 mi14:10:583:19:467:562:49
8:10
+0:25
Finish
26.22 mi14:18:193:27:077:547:21
7:13
-0:57

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

7:13 /mi

Average Pace

7:54 /mi

Slowest Pace

8:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:22

58% of race

Time at Steady Pace

1:26:45

42% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:54 /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 mi11:15:4124:297:5324:29
7:53
#15500
10K
6.21 mi11:39:5748:457:5124:16
7:49
#15191
15K
9.32 mi12:04:211:13:097:5124:24
7:51
#15055
20K
12.43 mi12:29:181:38:067:5424:57
8:02
#15038
Half
13.11 mi12:34:481:43:367:545:30
8:04
#15109
25K
15.53 mi12:54:462:03:347:5719:58
8:14
#15191
30K
18.64 mi13:20:132:29:018:0025:27
8:11
#14674
20M
20.00 mi13:30:442:39:327:5910:31
7:44
#14124
21M
21.00 mi13:38:482:47:367:598:04
8:04
#13700
35K
21.75 mi13:44:242:53:127:585:36
7:29
#13503
23M
23.00 mi13:53:573:02:457:579:33
7:38
#13109
24M
24.00 mi14:01:313:10:197:567:34
7:34
#12866
40K
24.85 mi14:08:093:16:577:556:38
7:45
#12678
25.2M
25.20 mi14:10:583:19:467:562:49
8:10
#12566
Finish
26.22 mi14:18:193:27:077:547:21
7:13
#12306
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi15500106201062014821(Top 52%)10285(Top 64%)10285(Top 624%)
10K6.21 mi3.10 mi15191+30910489+13110489+13114891(Top 52%)10374(Top 64%)10374(Top 629%)
15K9.32 mi3.11 mi15055+13610422+6710422+6714821(Top 52%)10285(Top 64%)10285(Top 624%)
20K12.43 mi3.11 mi15038+1710390+3210390+3215136(Top 53%)10376(Top 64%)10376(Top 630%)
Half13.11 mi0.68 mi15109-7110417-2710417-2716290(Top 57%)10867(Top 67%)10867(Top 659%)
25K15.53 mi2.42 mi15191-8210429-1210429-1215509(Top 55%)10435(Top 65%)10435(Top 633%)
30K18.64 mi3.11 mi14674+51710143+28610143+28612756(Top 45%)9027(Top 56%)9027(Top 548%)
20M20.00 mi1.36 mi14124+5509876+2679876+2678634(Top 30%)6813(Top 42%)6813(Top 413%)
21M21.00 mi1.00 mi13700+4249657+2199657+2197751(Top 27%)6134(Top 38%)6134(Top 372%)
35K21.75 mi0.75 mi13503+1979551+1069551+1068522(Top 30%)6614(Top 41%)6614(Top 401%)
23M23.00 mi1.25 mi13109+3949341+2109341+2107439(Top 26%)5842(Top 36%)5842(Top 354%)
24M24.00 mi1.00 mi12866+2439204+1379204+1378164(Top 29%)6222(Top 39%)6222(Top 378%)
40K24.85 mi0.85 mi12678+1889097+1079097+1078480(Top 30%)6254(Top 39%)6254(Top 379%)
25.2M25.20 mi0.35 mi12566+1129027+709027+706883(Top 24%)5302(Top 33%)5302(Top 322%)
Finish26.22 mi1.02 mi12306+2608863+1648863+1647128(Top 25%)5415(Top 34%)5415(Top 329%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21stories
+97ft-345ft

Overall

14821

Males

10285

M55-59

10285

5K→10K

3.1 - 6.2 mi

Top 52%
×5stories
+79ft-138ft

Overall

14891

Males

10374

M55-59

10374

10K→15K

6.2 - 9.3 mi

Top 52%
×3stories
+67ft-78ft

Overall

14821

Males

10285

M55-59

10285

15K→20K

9.3 - 12.4 mi

Top 53%
×5stories
+106ft-86ft

Overall

15136

Males

10376

M55-59

10376

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

16290

Males

10867

M55-59

10867

Half→25K

13.1 - 15.5 mi

Top 55%
×4stories
+66ft-88ft

Overall

15509

Males

10435

M55-59

10435

25K→30K

15.5 - 18.6 mi

Top 45%
×9stories
+181ft-148ft

Overall

12756

Males

9027

M55-59

9027

30K→20M

18.6 - 20.0 mi

Top 30%
×5stories
+64ft-50ft

Overall

8634

Males

6813

M55-59

6813

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7751

Males

6134

M55-59

6134

21M→35K

21.0 - 21.8 mi

Top 30%
×7stories
+17ft-86ft

Overall

8522

Males

6614

M55-59

6614

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

7439

Males

5842

M55-59

5842

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

8164

Males

6222

M55-59

6222

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

8480

Males

6254

M55-59

6254

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6883

Males

5302

M55-59

5302

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2stories
+22ft-21ft

Overall

7128

Males

5415

M55-59

5415

Passing Analysis

Category:
Athletes Passed
4083
Passed By
889
Net Change
+3194
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15500
5K → 10K475166+309#15500#15191
10K → 15K280144+136#15191#15055
15K → 20K227210+17#15055#15038
20K → Half1990-71#15038#15109
Half → 25K144226-82#15109#15191
25K → 30K55235+517#15191#14674
30K → 20M5511+550#14674#14124
20M → 21M4251+424#14124#13700
21M → 35K1981+197#13700#13503
35K → 23M3940+394#13503#13109
23M → 24M2463+243#13109#12866
24M → 40K1946+188#12866#12678
40K → 25.2M1120+112#12678#12566
25.2M → Finish2666+260#12566#12306
TOTALS4083889+3194
📊

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