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BOSTON MARATHON 2025

Juan Catalán Alarcon

Bib: 23048•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:42
Rank: #20414
Start → 5K
8:36/mi
26:42 split
10K· 6.21 mi
52:09
Rank: #19189 (+1225)
5K → 10K
8:11/mi
25:27 split
15K· 9.32 mi
1:18:58
Rank: #19491 (-302)
10K → 15K
8:38/mi
26:49 split
20K· 12.43 mi
1:45:59
Rank: #19443 (+48)
15K → 20K
8:42/mi
27:01 split
Half· 13.11 mi
1:51:51
Rank: #19469 (-26)
20K → Half
8:36/mi
5:52 split
25K· 15.53 mi
2:13:40
Rank: #19544 (-75)
Half → 25K
9:00/mi
21:49 split
30K· 18.64 mi
2:42:31
Rank: #19415 (+129)
25K → 30K
9:17/mi
28:51 split
20M
2:55:38
Rank: #19471 (-56)
30K → 20M
9:39/mi
13:07 split
21M
3:06:47
Rank: #19676 (-205)
20M → 21M
11:09/mi
11:09 split
35K· 21.75 mi
3:13:23
Rank: #19595 (+81)
21M → 35K
8:49/mi
6:36 split
23M
3:24:28
Rank: #19349 (+246)
35K → 23M
8:51/mi
11:05 split
24M
3:33:06
Rank: #19187 (+162)
23M → 24M
8:38/mi
8:38 split
40K· 24.85 mi
3:40:35
Rank: #19010 (+177)
24M → 40K
8:45/mi
7:29 split
25.2M
3:43:50
Rank: #18942 (+68)
40K → 25.2M
9:25/mi
3:15 split
Finish· 26.22 mi
3:52:26
Rank: #18832 (+110)
25.2M → Finish
8:26/mi
8:36 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:51
Pace8:32 /mi
2nd Half
Distance13.11 mi
Time2:00:35
Pace9:12 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:4226:428:3626:42
8:36
-
10K
6.21 mi11:48:0952:098:2425:27
8:11
-0:25
15K
9.32 mi12:14:581:18:588:2826:49
8:38
+0:27
20K
12.43 mi12:41:591:45:598:3227:01
8:42
+0:04
Half
13.11 mi12:47:511:51:518:325:52
8:36
-0:06
25K
15.53 mi13:09:402:13:408:3621:49
9:00
+0:24
30K
18.64 mi13:38:312:42:318:4328:51
9:17
+0:17
20M
20.00 mi13:51:382:55:388:4713:07
9:39
+0:22
21M
21.00 mi14:02:473:06:478:5411:09
11:09
+1:30
35K
21.75 mi14:09:233:13:238:546:36
8:49
-2:20
23M
23.00 mi14:20:283:24:288:5311:05
8:51
+0:02
24M
24.00 mi14:29:063:33:068:538:38
8:38
-0:13
40K
24.85 mi14:36:353:40:358:527:29
8:45
+0:07
25.2M
25.20 mi14:39:503:43:508:533:15
9:25
+0:40
Finish
26.22 mi14:48:263:52:268:528:36
8:26
-0:59

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

8:11 /mi

Average Pace

8:52 /mi

Slowest Pace

11:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

25:27

11% of race

Time at Steady Pace

2:30:37

65% of race

Time at Slower Pace

56:22

24% of race

Average Pace: 8:52 /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 mi11:22:4226:428:3626:42
8:36
#20414
10K
6.21 mi11:48:0952:098:2425:27
8:11
#19189
15K
9.32 mi12:14:581:18:588:2826:49
8:38
#19491
20K
12.43 mi12:41:591:45:598:3227:01
8:42
#19443
Half
13.11 mi12:47:511:51:518:325:52
8:36
#19469
25K
15.53 mi13:09:402:13:408:3621:49
9:00
#19544
30K
18.64 mi13:38:312:42:318:4328:51
9:17
#19415
20M
20.00 mi13:51:382:55:388:4713:07
9:39
#19471
21M
21.00 mi14:02:473:06:478:5411:09
11:09
#19676
35K
21.75 mi14:09:233:13:238:546:36
8:49
#19595
23M
23.00 mi14:20:283:24:288:5311:05
8:51
#19349
24M
24.00 mi14:29:063:33:068:538:38
8:38
#19187
40K
24.85 mi14:36:353:40:358:527:29
8:45
#19010
25.2M
25.20 mi14:39:503:43:508:533:15
9:25
#18942
Finish
26.22 mi14:48:263:52:268:528:36
8:26
#18832
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi20414126041260420085(Top 71%)12548(Top 78%)12548(Top 997%)
10K6.21 mi3.10 mi19189+122512129+47512129+47517813(Top 63%)11577(Top 72%)11577(Top 920%)
15K9.32 mi3.11 mi19491-30212260-13112260-13120085(Top 71%)12548(Top 78%)12548(Top 997%)
20K12.43 mi3.11 mi19443+4812236+2412236+2419384(Top 68%)12201(Top 76%)12201(Top 969%)
Half13.11 mi0.68 mi19469-2612240-412240-419773(Top 70%)12366(Top 77%)12366(Top 982%)
25K15.53 mi2.42 mi19544-7512267-2712267-2719874(Top 70%)12352(Top 77%)12352(Top 981%)
30K18.64 mi3.11 mi19415+12912167+10012167+10019040(Top 67%)11849(Top 74%)11849(Top 941%)
20M20.00 mi1.36 mi19471-5612170-312170-319765(Top 70%)12050(Top 75%)12050(Top 957%)
21M21.00 mi1.00 mi19676-20512232-6212232-6221757(Top 77%)12863(Top 80%)12863(Top 1022%)
35K21.75 mi0.75 mi19595+8112178+5412178+5417353(Top 61%)10757(Top 67%)10757(Top 854%)
23M23.00 mi1.25 mi19349+24612041+13712041+13715401(Top 54%)9821(Top 61%)9821(Top 780%)
24M24.00 mi1.00 mi19187+16211955+8611955+8615351(Top 54%)9746(Top 61%)9746(Top 774%)
40K24.85 mi0.85 mi19010+17711851+10411851+10414915(Top 53%)9412(Top 58%)9412(Top 748%)
25.2M25.20 mi0.35 mi18942+6811811+4011811+4014143(Top 50%)9028(Top 56%)9028(Top 717%)
Finish26.22 mi1.02 mi18832+11011746+6511746+6515829(Top 56%)9865(Top 61%)9865(Top 784%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21stories
+97ft-345ft

Overall

20085

Males

12548

M60-64

12548

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

17813

Males

11577

M60-64

11577

10K→15K

6.2 - 9.3 mi

Top 71%
×3stories
+67ft-78ft

Overall

20085

Males

12548

M60-64

12548

15K→20K

9.3 - 12.4 mi

Top 68%
×5stories
+106ft-86ft

Overall

19384

Males

12201

M60-64

12201

20K→Half

12.4 - 13.1 mi

Top 70%
×2stories
+19ft-37ft

Overall

19773

Males

12366

M60-64

12366

Half→25K

13.1 - 15.5 mi

Top 70%
×4stories
+66ft-88ft

Overall

19874

Males

12352

M60-64

12352

25K→30K

15.5 - 18.6 mi

Top 67%
×9stories
+181ft-148ft

Overall

19040

Males

11849

M60-64

11849

30K→20M

18.6 - 20.0 mi

Top 70%
×5stories
+64ft-50ft

Overall

19765

Males

12050

M60-64

12050

20M→21M

20.0 - 21.0 mi

Top 77%
×8stories
+106ft-24ft

Overall

21757

Males

12863

M60-64

12863

21M→35K

21.0 - 21.8 mi

Top 61%
×7stories
+17ft-86ft

Overall

17353

Males

10757

M60-64

10757

35K→23M

21.8 - 23.0 mi

Top 54%
×5stories
+23ft-63ft

Overall

15401

Males

9821

M60-64

9821

23M→24M

23.0 - 24.0 mi

Top 54%
×6stories
+12ft-82ft

Overall

15351

Males

9746

M60-64

9746

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

14915

Males

9412

M60-64

9412

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

14143

Males

9028

M60-64

9028

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

15829

Males

9865

M60-64

9865

Passing Analysis

Category:
Athletes Passed
3060
Passed By
1478
Net Change
+1582
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20414
5K → 10K124722+1225#20414#19189
10K → 15K99401-302#19189#19491
15K → 20K233185+48#19491#19443
20K → Half2753-26#19443#19469
Half → 25K143218-75#19469#19544
25K → 30K274145+129#19544#19415
30K → 20M91147-56#19415#19471
20M → 21M52257-205#19471#19676
21M → 35K9413+81#19676#19595
35K → 23M2482+246#19595#19349
23M → 24M1697+162#19349#19187
24M → 40K1847+177#19187#19010
40K → 25.2M702+68#19010#18942
25.2M → Finish12919+110#18942#18832
TOTALS30601478+1582
📊

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