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BOSTON MARATHON 2025

Alejandro Valdes Serna

Bib: 11821 M MX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
6:58/mi
21:38
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:09/mi
43:52
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:22/mi
1:06:45
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:40/mi
1:30:35
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:49/mi
1:35:55
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:08/mi
1:55:37
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:06/mi
2:23:52
↑ 181↓ 1480.2%
138 ft elev
20M
9:51/mi
2:37:15
↑ 64↓ 500.2%
148 ft elev
21M
10:33/mi
2:47:48
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
11:12/mi
2:56:11
↑ 17↓ 861.7%
156 ft elev
23M
10:00/mi
3:08:42
↑ 23↓ 630.6%
116 ft elev
24M
9:52/mi
3:18:34
↓ 821.3%
34 ft elev
40K· 24.85 mi
11:32/mi
3:28:26
↓ 200.3%
20 ft elev
25.2M
9:52/mi
3:31:50
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:00/mi
3:41:00
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:35:557:19 /mi⚡ faster
2nd Half
2:05:059:33 /mi+30.4%
Positive split — 30.4% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
21:386:583.11 mi21:38
6:58
-
10K
43:527:043.10 mi22:14
7:09
+0:11
15K
1:06:457:103.11 mi22:53
7:22
+0:13
20K
1:30:357:173.11 mi23:50
7:40
+0:18
Half(13.11 mi)
1:35:557:190.68 mi5:20
7:49
+0:09
25K
1:55:377:272.42 mi19:42
8:08
+0:19
30K
2:23:527:433.11 mi28:15
9:06
+0:58
20M
2:37:157:521.36 mi13:23
9:51
+0:45
21M
2:47:487:591.00 mi10:33
10:33
+0:42
35K
2:56:118:060.75 mi8:23
11:12
+0:39
23M
3:08:428:121.25 mi12:31
10:00
-1:12
24M
3:18:348:161.00 mi9:52
9:52
-0:08
40K
3:28:268:230.85 mi9:52
11:32
+1:40
25.2M
3:31:508:240.35 mi3:24
9:52
-1:40
Finish(26.22 mi)
3:41:008:261.02 mi9:10
9:00
-0:52
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

6:58 /mi

Average Pace

8:26 /mi

Slowest Pace

11:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:55:37

52% of race

Time at Steady Pace

37:25

17% of race

Time at Slower Pace

1:07:58

31% of race

Average Pace: 8:26 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi7533670167011053883778377
10K3.10 mi8344-8117203-5027203-502912676807680
15K3.11 mi8999-6557584-3817584-3811053883778377
20K3.11 mi9772-7737984-4007984-4001214990439043
Half(13.11 mi)0.68 mi10023-2518112-1288112-128143821007510075
25K2.42 mi10831-8088502-3908502-390147971011610116
30K3.11 mi12414-15839162-6609162-660181451143611436
20M1.36 mi13227-8139483-3219483-321204321233512335
21M1.00 mi13792-5659700-2179700-217201481209612096
35K0.75 mi14583-79110042-34210042-342246161416214162
23M1.25 mi15069-48610218-17610218-176204661213312133
24M1.00 mi15421-35210326-10810326-108209261230012300
40K0.85 mi15979-55810545-21910545-219241961386713867
25.2M0.35 mi15987-810532+1310532+13163391004910049
Finish(26.22 mi)1.02 mi16117-13010577-4510577-45189921134611346

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21story building
+97ft-345ft

Overall

10538

Males

8377

M45-49

8377

5K→10K

3.1 - 6.2 mi

Top 32%
×5story building
+79ft-138ft

Overall

9126

Males

7680

M45-49

7680

10K→15K

6.2 - 9.3 mi

Top 37%
×3story building
+67ft-78ft

Overall

10538

Males

8377

M45-49

8377

15K→20K

9.3 - 12.4 mi

Top 43%
×5story building
+106ft-86ft

Overall

12149

Males

9043

M45-49

9043

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

14382

Males

10075

M45-49

10075

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

14797

Males

10116

M45-49

10116

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

18145

Males

11436

M45-49

11436

30K→20M

18.6 - 20.0 mi

Top 72%
×5story building
+64ft-50ft

Overall

20432

Males

12335

M45-49

12335

20M→21M

20.0 - 21.0 mi

Top 71%
×8story building
+106ft-24ft

Overall

20148

Males

12096

M45-49

12096

21M→35K

21.0 - 21.8 mi

Top 87%
×7story building
+17ft-86ft

Overall

24616

Males

14162

M45-49

14162

35K→23M

21.8 - 23.0 mi

Top 72%
×5story building
+23ft-63ft

Overall

20466

Males

12133

M45-49

12133

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

20926

Males

12300

M45-49

12300

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

24196

Males

13867

M45-49

13867

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16339

Males

10049

M45-49

10049

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

18992

Males

11346

M45-49

11346

Passing Analysis

Category:
Athletes Passed
353
Passed By
8934
Net Change
-8584
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7533
5K → 10K32843-811#7533#8344
10K → 15K41696-655#8344#8999
15K → 20K45818-773#8999#9772
20K → Half2251-251#9772#10023
Half → 25K35842-808#10023#10831
25K → 30K311614-1583#10831#12414
30K → 20M28841-813#12414#13227
20M → 21M20585-565#13227#13792
21M → 35K4795-791#13792#14583
35K → 23M28514-486#14583#15069
23M → 24M16368-352#15069#15421
24M → 40K10568-558#15421#15979
40K → 25.2M2836-8#15979#15987
25.2M → Finish33163-130#15987#16117
TOTALS3538934-8584

Passing Charts

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