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BOSTON MARATHON 2025

Jake Corsi

Bib: 881•M

VA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 2%
Gender (Male)
#0 / 16105
Top 3%
Division (M18-39)
#0 / 5642
Top 7%
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
5:49/mi
18:04
↑ 97↓ 3451.5%
10K· 6.21 mi
5:51/mi
36:14
↑ 79↓ 1380.4%
15K· 9.32 mi
5:52/mi
54:28
↑ 67↓ 78
20K· 12.43 mi
5:53/mi
1:12:44
↑ 106↓ 860.1%
Half· 13.11 mi
5:53/mi
1:16:45
↑ 19↓ 370.5%
25K· 15.53 mi
5:54/mi
1:31:04
↑ 66↓ 880.2%
30K· 18.64 mi
5:59/mi
1:49:38
↑ 181↓ 1480.2%
20M
6:01/mi
1:57:48
↑ 64↓ 500.2%
21M
6:22/mi
2:04:10
↑ 106↓ 241.6%
35K· 21.75 mi
5:53/mi
2:08:34
↑ 17↓ 861.7%
23M
6:03/mi
2:16:08
↑ 23↓ 630.6%
24M
5:58/mi
2:22:06
↓ 821.3%
40K· 24.85 mi
6:05/mi
2:27:18
↓ 200.3%
25.2M
6:37/mi
2:29:35
↑ 13↓ 160.2%
Finish· 26.22 mi
5:58/mi
2:35:40
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:16:45
Pace5:51 /mi
2nd Half
Distance13.11 mi
Time1:18:55
Pace6:01 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:1218:045:4918:04
5:49
-
10K
6.21 mi10:36:2236:145:5018:10
5:51
+0:02
15K
9.32 mi10:54:3654:285:5118:14
5:52
+0:01
20K
12.43 mi11:12:521:12:445:5118:16
5:53
+0:01
Half
13.11 mi11:16:531:16:455:514:01
5:53
0:00
25K
15.53 mi11:31:121:31:045:5214:19
5:54
+0:01
30K
18.64 mi11:49:461:49:385:5318:34
5:59
+0:05
20M
20.00 mi11:57:561:57:485:538:10
6:01
+0:02
21M
21.00 mi12:04:182:04:105:556:22
6:22
+0:21
35K
21.75 mi12:08:422:08:345:554:24
5:53
-0:29
23M
23.00 mi12:16:162:16:085:557:34
6:03
+0:10
24M
24.00 mi12:22:142:22:065:555:58
5:58
-0:05
40K
24.85 mi12:27:262:27:185:565:12
6:05
+0:07
25.2M
25.20 mi12:29:432:29:355:562:17
6:37
+0:32
Finish
26.22 mi12:35:482:35:405:566:05
5:58
-0:39

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

5:49 /mi

Average Pace

5:56 /mi

Slowest Pace

6:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:23

99% of race

Time at Steady Pace

2:17

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:56 /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 mi10:18:1218:045:4918:04
5:49
#640
10K
6.21 mi10:36:2236:145:5018:10
5:51
#648
15K
9.32 mi10:54:3654:285:5118:14
5:52
#644
20K
12.43 mi11:12:521:12:445:5118:16
5:53
#618
Half
13.11 mi11:16:531:16:455:514:01
5:53
#624
25K
15.53 mi11:31:121:31:045:5214:19
5:54
#604
30K
18.64 mi11:49:461:49:385:5318:34
5:59
#557
20M
20.00 mi11:57:561:57:485:538:10
6:01
#540
21M
21.00 mi12:04:182:04:105:556:22
6:22
#528
35K
21.75 mi12:08:422:08:345:554:24
5:53
#517
23M
23.00 mi12:16:162:16:085:557:34
6:03
#499
24M
24.00 mi12:22:142:22:065:555:58
5:58
#489
40K
24.85 mi12:27:262:27:185:565:12
6:05
#472
25.2M
25.20 mi12:29:432:29:355:562:17
6:37
#471
Finish
26.22 mi12:35:482:35:405:566:05
5:58
#476
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi640593593677(Top 2%)631(Top 4%)631(Top 11%)
10K6.21 mi3.10 mi648-8602-9602-9693(Top 2%)648(Top 4%)648(Top 11%)
15K9.32 mi3.11 mi644+4599+3599+3677(Top 2%)631(Top 4%)631(Top 11%)
20K12.43 mi3.11 mi618+26572+27572+27571(Top 2%)527(Top 3%)527(Top 9%)
Half13.11 mi0.68 mi624-6578-6578-6777(Top 3%)731(Top 5%)731(Top 13%)
25K15.53 mi2.42 mi604+20559+19559+19579(Top 2%)534(Top 3%)534(Top 9%)
30K18.64 mi3.11 mi557+47512+47512+47458(Top 2%)424(Top 3%)424(Top 8%)
20M20.00 mi1.36 mi540+17495+17495+17399(Top 1%)373(Top 2%)373(Top 7%)
21M21.00 mi1.00 mi528+12485+10485+10449(Top 2%)423(Top 3%)423(Top 7%)
35K21.75 mi0.75 mi517+11475+10475+10495(Top 2%)460(Top 3%)460(Top 8%)
23M23.00 mi1.25 mi499+18458+17458+17402(Top 1%)377(Top 2%)377(Top 7%)
24M24.00 mi1.00 mi489+10449+9449+9507(Top 2%)471(Top 3%)471(Top 8%)
40K24.85 mi0.85 mi472+17434+15434+15500(Top 2%)466(Top 3%)466(Top 8%)
25.2M25.20 mi0.35 mi471+1434434610(Top 2%)565(Top 4%)565(Top 10%)
Finish26.22 mi1.02 mi476-5440-6440-6826(Top 3%)779(Top 5%)779(Top 14%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21story building
+97ft-345ft

Overall

677

Males

631

M18-39

631

5K→10K

3.1 - 6.2 mi

Top 2%
×5story building
+79ft-138ft

Overall

693

Males

648

M18-39

648

10K→15K

6.2 - 9.3 mi

Top 2%
×3story building
+67ft-78ft

Overall

677

Males

631

M18-39

631

15K→20K

9.3 - 12.4 mi

Top 2%
×5story building
+106ft-86ft

Overall

571

Males

527

M18-39

527

20K→Half

12.4 - 13.1 mi

Top 3%
×2story building
+19ft-37ft

Overall

777

Males

731

M18-39

731

Half→25K

13.1 - 15.5 mi

Top 2%
×4story building
+66ft-88ft

Overall

579

Males

534

M18-39

534

25K→30K

15.5 - 18.6 mi

Top 2%
×9story building
+181ft-148ft

Overall

458

Males

424

M18-39

424

30K→20M

18.6 - 20.0 mi

Top 1%
×5story building
+64ft-50ft

Overall

399

Males

373

M18-39

373

20M→21M

20.0 - 21.0 mi

Top 2%
×8story building
+106ft-24ft

Overall

449

Males

423

M18-39

423

21M→35K

21.0 - 21.8 mi

Top 2%
×7story building
+17ft-86ft

Overall

495

Males

460

M18-39

460

35K→23M

21.8 - 23.0 mi

Top 1%
×5story building
+23ft-63ft

Overall

402

Males

377

M18-39

377

23M→24M

23.0 - 24.0 mi

Top 2%
×6story building
+12ft-82ft

Overall

507

Males

471

M18-39

471

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

500

Males

466

M18-39

466

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

610

Males

565

M18-39

565

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2story building
+22ft-21ft

Overall

826

Males

779

M18-39

779

Passing Analysis

Category:
Athletes Passed
293
Passed By
129
Net Change
+164
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#640
5K → 10K3038-8#640#648
10K → 15K1915+4#648#644
15K → 20K4115+26#644#618
20K → Half17-6#618#624
Half → 25K277+20#624#604
25K → 30K569+47#604#557
30K → 20M192+17#557#540
20M → 21M164+12#540#528
21M → 35K165+11#528#517
35K → 23M235+18#517#499
23M → 24M144+10#499#489
24M → 40K192+17#489#472
40K → 25.2M54+1#472#471
25.2M → Finish712-5#471#476
TOTALS293129+164
📊

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