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BOSTON MARATHON 2025

Jacob Alexander

Bib: 461•M

IA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 2%
Gender (Male)
#0 / 16105
Top 4%
Division (M18-39)
#0 / 5642
Top 10%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
17:59
Rank: #595
Start → 5K
17:59 | 5:47/mi
10K· 6.21 mi
35:42
Rank: #521 (+74)
5K → 10K
17:43 | 5:42/mi
15K· 9.32 mi
53:18
Rank: #442 (+79)
10K → 15K
17:36 | 5:40/mi
20K· 12.43 mi
1:11:18
Rank: #435 (+7)
15K → 20K
18:00 | 5:48/mi
Half· 13.11 mi
1:15:18
Rank: #444 (-9)
20K → Half
4:00 | 5:52/mi
25K· 15.53 mi
1:30:14
Rank: #501 (-57)
Half → 25K
14:56 | 6:10/mi
30K· 18.64 mi
1:50:08
Rank: #608 (-107)
25K → 30K
19:54 | 6:24/mi
20M
1:58:37
Rank: #618 (-10)
30K → 20M
8:29 | 6:15/mi
21M
2:05:13
Rank: #613 (+5)
20M → 21M
6:36 | 6:36/mi
35K· 21.75 mi
2:09:50
Rank: #623 (-10)
21M → 35K
4:37 | 6:10/mi
23M
2:18:02
Rank: #652 (-29)
35K → 23M
8:12 | 6:33/mi
24M
2:24:32
Rank: #678 (-26)
23M → 24M
6:30 | 6:30/mi
40K· 24.85 mi
2:30:00
Rank: #677 (+1)
24M → 40K
5:28 | 6:24/mi
25.2M
2:32:20
Rank: #676 (+1)
40K → 25.2M
2:20 | 6:46/mi
Finish· 26.22 mi
2:38:18
Rank: #664 (+12)
25.2M → Finish
5:58 | 5:51/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:15:18
Pace5:45 /mi
2nd Half
Distance13.11 mi
Time1:23:00
Pace6:20 /mi
📊Positive Split: 10.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:1517:595:4717:59
5:47
-
10K
6.21 mi10:35:5835:425:4517:43
5:42
-0:05
15K
9.32 mi10:53:3453:185:4317:36
5:40
-0:02
20K
12.43 mi11:11:341:11:185:4418:00
5:48
+0:08
Half
13.11 mi11:15:341:15:185:454:00
5:52
+0:04
25K
15.53 mi11:30:301:30:145:4914:56
6:10
+0:18
30K
18.64 mi11:50:241:50:085:5419:54
6:24
+0:14
20M
20.00 mi11:58:531:58:375:568:29
6:15
-0:09
21M
21.00 mi12:05:292:05:135:586:36
6:36
+0:21
35K
21.75 mi12:10:062:09:505:584:37
6:10
-0:26
23M
23.00 mi12:18:182:18:026:008:12
6:33
+0:23
24M
24.00 mi12:24:482:24:326:016:30
6:30
-0:03
40K
24.85 mi12:30:162:30:006:025:28
6:24
-0:06
25.2M
25.20 mi12:32:362:32:206:032:20
6:46
+0:22
Finish
26.22 mi12:38:342:38:186:035:58
5:51
-0:55

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

5:40 /mi

Average Pace

6:03 /mi

Slowest Pace

6:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:40:49

64% of race

Time at Steady Pace

55:09

35% of race

Time at Slower Pace

2:20

1% of race

Average Pace: 6:02 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:18:1517:595:4717:59
5:47
#595
10K
6.21 mi10:35:5835:425:4517:43
5:42
#521
15K
9.32 mi10:53:3453:185:4317:36
5:40
#442
20K
12.43 mi11:11:341:11:185:4418:00
5:48
#435
Half
13.11 mi11:15:341:15:185:454:00
5:52
#444
25K
15.53 mi11:30:301:30:145:4914:56
6:10
#501
30K
18.64 mi11:50:241:50:085:5419:54
6:24
#608
20M
20.00 mi11:58:531:58:375:568:29
6:15
#618
21M
21.00 mi12:05:292:05:135:586:36
6:36
#613
35K
21.75 mi12:10:062:09:505:584:37
6:10
#623
23M
23.00 mi12:18:182:18:026:008:12
6:33
#652
24M
24.00 mi12:24:482:24:326:016:30
6:30
#678
40K
24.85 mi12:30:162:30:006:025:28
6:24
#677
25.2M
25.20 mi12:32:362:32:206:032:20
6:46
#676
Finish
26.22 mi12:38:342:38:186:035:58
5:51
#664
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi595551551329(Top 1%)301(Top 2%)301(Top 5%)
10K6.21 mi3.10 mi521+74483+68483+68457(Top 2%)421(Top 3%)421(Top 7%)
15K9.32 mi3.11 mi442+79407+76407+76329(Top 1%)301(Top 2%)301(Top 5%)
20K12.43 mi3.11 mi435+7401+6401+6439(Top 2%)408(Top 3%)408(Top 7%)
Half13.11 mi0.68 mi444-9410-9410-9731(Top 3%)685(Top 4%)685(Top 12%)
25K15.53 mi2.42 mi501-57464-54464-541293(Top 5%)1224(Top 8%)1224(Top 22%)
30K18.64 mi3.11 mi608-107561-97561-971563(Top 6%)1480(Top 9%)1480(Top 26%)
20M20.00 mi1.36 mi618-10571-10571-10817(Top 3%)770(Top 5%)770(Top 14%)
21M21.00 mi1.00 mi613+5566+5566+5896(Top 3%)846(Top 5%)846(Top 15%)
35K21.75 mi0.75 mi623-10576-10576-101118(Top 4%)1053(Top 7%)1053(Top 19%)
23M23.00 mi1.25 mi652-29605-29605-291609(Top 6%)1502(Top 9%)1502(Top 27%)
24M24.00 mi1.00 mi678-26630-25630-252016(Top 7%)1869(Top 12%)1869(Top 33%)
40K24.85 mi0.85 mi677+1628+2628+21218(Top 4%)1131(Top 7%)1131(Top 20%)
25.2M25.20 mi0.35 mi676+1627+1627+1856(Top 3%)789(Top 5%)789(Top 14%)
Finish26.22 mi1.02 mi664+12615+12615+12601(Top 2%)563(Top 3%)563(Top 10%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

329

Males

301

M18-39

301

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

457

Males

421

M18-39

421

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

329

Males

301

M18-39

301

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

439

Males

408

M18-39

408

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

731

Males

685

M18-39

685

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1293

Males

1224

M18-39

1224

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1563

Males

1480

M18-39

1480

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

817

Males

770

M18-39

770

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

896

Males

846

M18-39

846

21M→35K

21.0 - 21.8 mi

Top 4%
×7stories
+17ft-86ft

Overall

1118

Males

1053

M18-39

1053

35K→23M

21.8 - 23.0 mi

Top 6%
×5stories
+23ft-63ft

Overall

1609

Males

1502

M18-39

1502

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

2016

Males

1869

M18-39

1869

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1218

Males

1131

M18-39

1131

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

856

Males

789

M18-39

789

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

601

Males

563

M18-39

563

Passing Analysis

Category:
Athletes Passed
280
Passed By
349
Net Change
-69
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#595
5K → 10K817+74#595#521
10K → 15K801+79#521#442
15K → 20K2518+7#442#435
20K → Half211-9#435#444
Half → 25K764-57#444#501
25K → 30K6113-107#501#608
30K → 20M1222-10#608#618
20M → 21M1611+5#618#613
21M → 35K717-10#613#623
35K → 23M837-29#623#652
23M → 24M430-26#652#678
24M → 40K1413+1#678#677
40K → 25.2M54+1#677#676
25.2M → Finish131+12#676#664
TOTALS280349-69
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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