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BOSTON MARATHON 2025

David Railén

Bib: 2532•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 11%
Gender (Male)
#0 / 16105
Top 18%
Division (M18-39)
#0 / 5642
Top 40%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:41
Rank: #2662
Start → 5K
19:41 | 6:20/mi
10K· 6.21 mi
39:30
Rank: #2772 (-110)
5K → 10K
19:49 | 6:23/mi
15K· 9.32 mi
59:06
Rank: #2643 (+129)
10K → 15K
19:36 | 6:19/mi
20K· 12.43 mi
1:18:42
Rank: #2450 (+193)
15K → 20K
19:36 | 6:19/mi
Half· 13.11 mi
1:22:56
Rank: #2416 (+34)
20K → Half
4:14 | 6:12/mi
25K· 15.53 mi
1:37:59
Rank: #2212 (+204)
Half → 25K
15:03 | 6:12/mi
30K· 18.64 mi
1:57:26
Rank: #1944 (+268)
25K → 30K
19:27 | 6:16/mi
20M
2:06:07
Rank: #1862 (+82)
30K → 20M
8:41 | 6:23/mi
21M
2:13:18
Rank: #1894 (-32)
20M → 21M
7:11 | 7:11/mi
35K· 21.75 mi
2:18:22
Rank: #1936 (-42)
21M → 35K
5:04 | 6:46/mi
23M
2:27:56
Rank: #2175 (-239)
35K → 23M
9:34 | 7:38/mi
24M
2:35:44
Rank: #2404 (-229)
23M → 24M
7:48 | 7:48/mi
40K· 24.85 mi
2:42:48
Rank: #2653 (-249)
24M → 40K
7:04 | 8:16/mi
25.2M
2:45:55
Rank: #2754 (-101)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
2:54:19
Rank: #3073 (-319)
25.2M → Finish
8:24 | 8:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:22:56
Pace6:20 /mi
2nd Half
Distance13.11 mi
Time1:31:23
Pace6:58 /mi
📊Positive Split: 10.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:1819:416:2019:41
6:20
-
10K
6.21 mi10:40:0739:306:2119:49
6:23
+0:03
15K
9.32 mi10:59:4359:066:2019:36
6:19
-0:04
20K
12.43 mi11:19:191:18:426:2019:36
6:19
0:00
Half
13.11 mi11:23:331:22:566:204:14
6:12
-0:07
25K
15.53 mi11:38:361:37:596:1815:03
6:12
0:00
30K
18.64 mi11:58:031:57:266:1819:27
6:16
+0:04
20M
20.00 mi12:06:442:06:076:188:41
6:23
+0:07
21M
21.00 mi12:13:552:13:186:217:11
7:11
+0:48
35K
21.75 mi12:18:592:18:226:225:04
6:46
-0:25
23M
23.00 mi12:28:332:27:566:269:34
7:38
+0:52
24M
24.00 mi12:36:212:35:446:297:48
7:48
+0:10
40K
24.85 mi12:43:252:42:486:337:04
8:16
+0:28
25.2M
25.20 mi12:46:322:45:556:353:07
9:02
+0:46
Finish
26.22 mi12:54:562:54:196:398:24
8:15
-0:47

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

6:12 /mi

Average Pace

6:39 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:11:11

75% of race

Time at Slower Pace

43:08

25% of race

Average Pace: 6:39 /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 mi10:20:1819:416:2019:41
6:20
#2662
10K
6.21 mi10:40:0739:306:2119:49
6:23
#2772
15K
9.32 mi10:59:4359:066:2019:36
6:19
#2643
20K
12.43 mi11:19:191:18:426:2019:36
6:19
#2450
Half
13.11 mi11:23:331:22:566:204:14
6:12
#2416
25K
15.53 mi11:38:361:37:596:1815:03
6:12
#2212
30K
18.64 mi11:58:031:57:266:1819:27
6:16
#1944
20M
20.00 mi12:06:442:06:076:188:41
6:23
#1862
21M
21.00 mi12:13:552:13:186:217:11
7:11
#1894
35K
21.75 mi12:18:592:18:226:225:04
6:46
#1936
23M
23.00 mi12:28:332:27:566:269:34
7:38
#2175
24M
24.00 mi12:36:212:35:446:297:48
7:48
#2404
40K
24.85 mi12:43:252:42:486:337:04
8:16
#2653
25.2M
25.20 mi12:46:322:45:556:353:07
9:02
#2754
Finish
26.22 mi12:54:562:54:196:398:24
8:15
#3073
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2662253725372376(Top 8%)2266(Top 14%)2266(Top 40%)
10K6.21 mi3.10 mi2772-1102640-1032640-1032893(Top 10%)2754(Top 17%)2754(Top 49%)
15K9.32 mi3.11 mi2643+1292521+1192521+1192376(Top 8%)2266(Top 14%)2266(Top 40%)
20K12.43 mi3.11 mi2450+1932338+1832338+1832053(Top 7%)1957(Top 12%)1957(Top 35%)
Half13.11 mi0.68 mi2416+342306+322306+322008(Top 7%)1917(Top 12%)1917(Top 34%)
25K15.53 mi2.42 mi2212+2042113+1932113+1931490(Top 5%)1416(Top 9%)1416(Top 25%)
30K18.64 mi3.11 mi1944+2681851+2621851+2621098(Top 4%)1033(Top 6%)1033(Top 18%)
20M20.00 mi1.36 mi1862+821771+801771+801222(Top 4%)1153(Top 7%)1153(Top 20%)
21M21.00 mi1.00 mi1894-321801-301801-303051(Top 11%)2816(Top 17%)2816(Top 50%)
35K21.75 mi0.75 mi1936-421840-391840-393894(Top 14%)3494(Top 22%)3494(Top 62%)
23M23.00 mi1.25 mi2175-2392070-2302070-2307475(Top 26%)5844(Top 36%)5844(Top 104%)
24M24.00 mi1.00 mi2404-2292286-2162286-2169750(Top 34%)7021(Top 44%)7021(Top 124%)
40K24.85 mi0.85 mi2653-2492515-2292515-22911901(Top 42%)7982(Top 50%)7982(Top 141%)
25.2M25.20 mi0.35 mi2754-1012608-932608-9311888(Top 42%)7899(Top 49%)7899(Top 140%)
Finish26.22 mi1.02 mi3073-3192894-2862894-28614501(Top 51%)9242(Top 57%)9242(Top 164%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2376

Males

2266

M18-39

2266

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2893

Males

2754

M18-39

2754

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2376

Males

2266

M18-39

2266

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

2053

Males

1957

M18-39

1957

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

2008

Males

1917

M18-39

1917

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1490

Males

1416

M18-39

1416

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1098

Males

1033

M18-39

1033

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1222

Males

1153

M18-39

1153

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

3051

Males

2816

M18-39

2816

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3894

Males

3494

M18-39

3494

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

7475

Males

5844

M18-39

5844

23M→24M

23.0 - 24.0 mi

Top 34%
×6stories
+12ft-82ft

Overall

9750

Males

7021

M18-39

7021

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11901

Males

7982

M18-39

7982

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11888

Males

7899

M18-39

7899

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2stories
+22ft-21ft

Overall

14501

Males

9242

M18-39

9242

Passing Analysis

Category:
Athletes Passed
1100
Passed By
1511
Net Change
-411
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2662
5K → 10K76186-110#2662#2772
10K → 15K15324+129#2772#2643
15K → 20K2007+193#2643#2450
20K → Half351+34#2450#2416
Half → 25K2062+204#2416#2212
25K → 30K2702+268#2212#1944
30K → 20M897+82#1944#1862
20M → 21M2961-32#1862#1894
21M → 35K1557-42#1894#1936
35K → 23M9248-239#1936#2175
23M → 24M11240-229#2175#2404
24M → 40K4253-249#2404#2653
40K → 25.2M2103-101#2653#2754
25.2M → Finish1320-319#2754#3073
TOTALS11001511-411
📊

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