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BOSTON MARATHON 2025

Iñaki Lasa Aguirre

Bib: 13473•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
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
7:21/mi
22:51
↑ 97↓ 3451.5%
10K· 6.21 mi
7:28/mi
46:04
↑ 79↓ 1380.4%
15K· 9.32 mi
7:31/mi
1:09:25
↑ 67↓ 78
20K· 12.43 mi
7:35/mi
1:32:58
↑ 106↓ 860.1%
Half· 13.11 mi
7:15/mi
1:37:55
↑ 19↓ 370.5%
25K· 15.53 mi
7:29/mi
1:56:03
↑ 66↓ 880.2%
30K· 18.64 mi
7:56/mi
2:20:41
↑ 181↓ 1480.2%
20M
8:00/mi
2:31:33
↑ 64↓ 500.2%
21M
8:24/mi
2:39:57
↑ 106↓ 241.6%
35K· 21.75 mi
8:23/mi
2:46:13
↑ 17↓ 861.7%
23M
9:24/mi
2:57:59
↑ 23↓ 630.6%
24M
10:17/mi
3:08:16
↓ 821.3%
40K· 24.85 mi
12:44/mi
3:19:09
↓ 200.3%
25.2M
15:51/mi
3:24:37
↑ 13↓ 160.2%
Finish· 26.22 mi
12:17/mi
3:37:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:55
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time1:59:13
Pace9:06 /mi
📊Positive Split: 21.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:4122:517:2122:51
7:21
-
10K
6.21 mi11:14:5446:047:2523:13
7:28
+0:07
15K
9.32 mi11:38:151:09:257:2723:21
7:31
+0:03
20K
12.43 mi12:01:481:32:587:2923:33
7:35
+0:04
Half
13.11 mi12:06:451:37:557:284:57
7:15
-0:20
25K
15.53 mi12:24:531:56:037:2818:08
7:29
+0:14
30K
18.64 mi12:49:312:20:417:3324:38
7:56
+0:27
20M
20.00 mi13:00:232:31:337:3510:52
8:00
+0:04
21M
21.00 mi13:08:472:39:577:378:24
8:24
+0:24
35K
21.75 mi13:15:032:46:137:396:16
8:23
-0:01
23M
23.00 mi13:26:492:57:597:4411:46
9:24
+1:01
24M
24.00 mi13:37:063:08:167:5110:17
10:17
+0:53
40K
24.85 mi13:47:593:19:098:0110:53
12:44
+2:27
25.2M
25.20 mi13:53:273:24:378:075:28
15:51
+3:07
Finish
26.22 mi14:05:583:37:088:1712:31
12:17
-3:34

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

7:15 /mi

Average Pace

8:17 /mi

Slowest Pace

15:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:46:13

77% of race

Time at Slower Pace

50:55

23% of race

Average Pace: 8:17 /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 mi10:51:4122:517:2122:51
7:21
#10891
10K
6.21 mi11:14:5446:047:2523:13
7:28
#11353
15K
9.32 mi11:38:151:09:257:2723:21
7:31
#11511
20K
12.43 mi12:01:481:32:587:2923:33
7:35
#11467
Half
13.11 mi12:06:451:37:557:284:57
7:15
#11392
25K
15.53 mi12:24:531:56:037:2818:08
7:29
#11086
30K
18.64 mi12:49:312:20:417:3324:38
7:56
#11002
20M
20.00 mi13:00:232:31:337:3510:52
8:00
#10914
21M
21.00 mi13:08:472:39:577:378:24
8:24
#10805
35K
21.75 mi13:15:032:46:137:396:16
8:23
#10941
23M
23.00 mi13:26:492:57:597:4411:46
9:24
#11468
24M
24.00 mi13:37:063:08:167:5110:17
10:17
#12209
40K
24.85 mi13:47:593:19:098:0110:53
12:44
#13347
25.2M
25.20 mi13:53:273:24:378:075:28
15:51
#14047
Finish
26.22 mi14:05:583:37:088:1712:31
12:17
#15170
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi108918643864311895(Top 42%)9021(Top 56%)9021(Top 452%)
10K6.21 mi3.10 mi11353-4628851-2088851-20811840(Top 42%)9082(Top 56%)9082(Top 455%)
15K9.32 mi3.11 mi11511-1588895-448895-4411895(Top 42%)9021(Top 56%)9021(Top 452%)
20K12.43 mi3.11 mi11467+448845+508845+5011430(Top 40%)8704(Top 54%)8704(Top 436%)
Half13.11 mi0.68 mi11392+758808+378808+379608(Top 34%)7843(Top 49%)7843(Top 393%)
25K15.53 mi2.42 mi11086+3068623+1858623+1859798(Top 34%)7763(Top 48%)7763(Top 389%)
30K18.64 mi3.11 mi11002+848503+1208503+12010862(Top 38%)8125(Top 50%)8125(Top 407%)
20M20.00 mi1.36 mi10914+888424+798424+7910425(Top 37%)7760(Top 48%)7760(Top 389%)
21M21.00 mi1.00 mi10805+1098328+968328+969846(Top 35%)7290(Top 45%)7290(Top 365%)
35K21.75 mi0.75 mi10941-1368372-448372-4414704(Top 52%)9586(Top 60%)9586(Top 480%)
23M23.00 mi1.25 mi11468-5278572-2008572-20018213(Top 64%)11071(Top 69%)11071(Top 555%)
24M24.00 mi1.00 mi12209-7418900-3288900-32822168(Top 78%)12884(Top 80%)12884(Top 645%)
40K24.85 mi0.85 mi13347-11389392-4929392-49225968(Top 91%)14767(Top 92%)14767(Top 740%)
25.2M25.20 mi0.35 mi14047-7009693-3019693-30127631(Top 97%)15611(Top 97%)15611(Top 782%)
Finish26.22 mi1.02 mi15170-112310156-46310156-46327094(Top 95%)15351(Top 95%)15351(Top 769%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21story building
+97ft-345ft

Overall

11895

Males

9021

M50-54

9021

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

11840

Males

9082

M50-54

9082

10K→15K

6.2 - 9.3 mi

Top 42%
×3story building
+67ft-78ft

Overall

11895

Males

9021

M50-54

9021

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

11430

Males

8704

M50-54

8704

20K→Half

12.4 - 13.1 mi

Top 34%
×2story building
+19ft-37ft

Overall

9608

Males

7843

M50-54

7843

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9798

Males

7763

M50-54

7763

25K→30K

15.5 - 18.6 mi

Top 38%
×9story building
+181ft-148ft

Overall

10862

Males

8125

M50-54

8125

30K→20M

18.6 - 20.0 mi

Top 37%
×5story building
+64ft-50ft

Overall

10425

Males

7760

M50-54

7760

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

9846

Males

7290

M50-54

7290

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

14704

Males

9586

M50-54

9586

35K→23M

21.8 - 23.0 mi

Top 64%
×5story building
+23ft-63ft

Overall

18213

Males

11071

M50-54

11071

23M→24M

23.0 - 24.0 mi

Top 78%
×6story building
+12ft-82ft

Overall

22168

Males

12884

M50-54

12884

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

25968

Males

14767

M50-54

14767

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1story
+13ft-16ft

Overall

27631

Males

15611

M50-54

15611

25.2M→Finish

25.2 - 26.2 mi

Top 95%
×2story building
+22ft-21ft

Overall

27094

Males

15351

M50-54

15351

Passing Analysis

Category:
Athletes Passed
1491
Passed By
5770
Net Change
-4279
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10891
5K → 10K99561-462#10891#11353
10K → 15K127285-158#11353#11511
15K → 20K211167+44#11511#11467
20K → Half794+75#11467#11392
Half → 25K33630+306#11392#11086
25K → 30K274190+84#11086#11002
30K → 20M15264+88#11002#10914
20M → 21M15344+109#10914#10805
21M → 35K27163-136#10805#10941
35K → 23M18545-527#10941#11468
23M → 24M9750-741#11468#12209
24M → 40K31141-1138#12209#13347
40K → 25.2M0700-700#13347#14047
25.2M → Finish31126-1123#14047#15170
TOTALS14915770-4279
📊

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