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BOSTON MARATHON 2025

Alejandro Belmares

Bib: 3672•M

NV

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 12%
Division (M18-39)
#0 / 5642
Top 28%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:06
Rank: #3591
Start → 5K
20:06 | 6:28/mi
10K· 6.21 mi
39:56
Rank: #3236 (+355)
5K → 10K
19:50 | 6:23/mi
15K· 9.32 mi
59:35
Rank: #2950 (+286)
10K → 15K
19:39 | 6:19/mi
20K· 12.43 mi
1:19:18
Rank: #2739 (+211)
15K → 20K
19:43 | 6:21/mi
Half· 13.11 mi
1:23:39
Rank: #2743 (-4)
20K → Half
4:21 | 6:23/mi
25K· 15.53 mi
1:38:51
Rank: #2535 (+208)
Half → 25K
15:12 | 6:16/mi
30K· 18.64 mi
1:58:42
Rank: #2274 (+261)
25K → 30K
19:51 | 6:23/mi
20M
2:07:25
Rank: #2167 (+107)
30K → 20M
8:43 | 6:25/mi
21M
2:14:18
Rank: #2133 (+34)
20M → 21M
6:53 | 6:53/mi
35K· 21.75 mi
2:19:04
Rank: #2105 (+28)
21M → 35K
4:46 | 6:22/mi
23M
2:27:21
Rank: #2054 (+51)
35K → 23M
8:17 | 6:37/mi
24M
2:33:55
Rank: #2023 (+31)
23M → 24M
6:34 | 6:34/mi
40K· 24.85 mi
2:39:38
Rank: #2016 (+7)
24M → 40K
5:43 | 6:41/mi
25.2M
2:42:10
Rank: #2013 (+3)
40K → 25.2M
2:32 | 7:21/mi
Finish· 26.22 mi
2:48:52
Rank: #2048 (-35)
25.2M → Finish
6:42 | 6:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:39
Pace6:23 /mi
2nd Half
Distance13.11 mi
Time1:25:13
Pace6:30 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:2520:066:2820:06
6:28
-
10K
6.21 mi10:41:1539:566:2619:50
6:23
-0:05
15K
9.32 mi11:00:5459:356:2419:39
6:19
-0:04
20K
12.43 mi11:20:371:19:186:2319:43
6:21
+0:02
Half
13.11 mi11:24:581:23:396:234:21
6:23
+0:02
25K
15.53 mi11:40:101:38:516:2215:12
6:16
-0:07
30K
18.64 mi12:00:011:58:426:2219:51
6:23
+0:07
20M
20.00 mi12:08:442:07:256:228:43
6:25
+0:02
21M
21.00 mi12:15:372:14:186:246:53
6:53
+0:28
35K
21.75 mi12:20:232:19:046:244:46
6:22
-0:31
23M
23.00 mi12:28:402:27:216:248:17
6:37
+0:15
24M
24.00 mi12:35:142:33:556:256:34
6:34
-0:03
40K
24.85 mi12:40:572:39:386:255:43
6:41
+0:07
25.2M
25.20 mi12:43:292:42:106:262:32
7:21
+0:40
Finish
26.22 mi12:50:112:48:526:276:42
6:34
-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

6:16 /mi

Average Pace

6:27 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:20

98% of race

Time at Steady Pace

2:32

2% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:26 /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 mi10:21:2520:066:2820:06
6:28
#3591
10K
6.21 mi10:41:1539:566:2619:50
6:23
#3236
15K
9.32 mi11:00:5459:356:2419:39
6:19
#2950
20K
12.43 mi11:20:371:19:186:2319:43
6:21
#2739
Half
13.11 mi11:24:581:23:396:234:21
6:23
#2743
25K
15.53 mi11:40:101:38:516:2215:12
6:16
#2535
30K
18.64 mi12:00:011:58:426:2219:51
6:23
#2274
20M
20.00 mi12:08:442:07:256:228:43
6:25
#2167
21M
21.00 mi12:15:372:14:186:246:53
6:53
#2133
35K
21.75 mi12:20:232:19:046:244:46
6:22
#2105
23M
23.00 mi12:28:402:27:216:248:17
6:37
#2054
24M
24.00 mi12:35:142:33:556:256:34
6:34
#2023
40K
24.85 mi12:40:572:39:386:255:43
6:41
#2016
25.2M
25.20 mi12:43:292:42:106:262:32
7:21
#2013
Finish
26.22 mi12:50:112:48:526:276:42
6:34
#2048
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3591340634062482(Top 9%)2367(Top 15%)2367(Top 42%)
10K6.21 mi3.10 mi3236+3553075+3313075+3312924(Top 10%)2783(Top 17%)2783(Top 49%)
15K9.32 mi3.11 mi2950+2862810+2652810+2652482(Top 9%)2367(Top 15%)2367(Top 42%)
20K12.43 mi3.11 mi2739+2112611+1992611+1992245(Top 8%)2139(Top 13%)2139(Top 38%)
Half13.11 mi0.68 mi2743-42617-62617-62870(Top 10%)2737(Top 17%)2737(Top 49%)
25K15.53 mi2.42 mi2535+2082419+1982419+1981732(Top 6%)1645(Top 10%)1645(Top 29%)
30K18.64 mi3.11 mi2274+2612169+2502169+2501511(Top 5%)1430(Top 9%)1430(Top 25%)
20M20.00 mi1.36 mi2167+1072065+1042065+1041300(Top 5%)1228(Top 8%)1228(Top 22%)
21M21.00 mi1.00 mi2133+342032+332032+331808(Top 6%)1703(Top 11%)1703(Top 30%)
35K21.75 mi0.75 mi2105+282004+282004+281881(Top 7%)1765(Top 11%)1765(Top 31%)
23M23.00 mi1.25 mi2054+511953+511953+511886(Top 7%)1763(Top 11%)1763(Top 31%)
24M24.00 mi1.00 mi2023+311920+331920+332313(Top 8%)2138(Top 13%)2138(Top 38%)
40K24.85 mi0.85 mi2016+71913+71913+72285(Top 8%)2090(Top 13%)2090(Top 37%)
25.2M25.20 mi0.35 mi2013+31909+41909+42670(Top 9%)2372(Top 15%)2372(Top 42%)
Finish26.22 mi1.02 mi2048-351943-341943-343168(Top 11%)2800(Top 17%)2800(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2482

Males

2367

M18-39

2367

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2924

Males

2783

M18-39

2783

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2482

Males

2367

M18-39

2367

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2245

Males

2139

M18-39

2139

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2870

Males

2737

M18-39

2737

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1732

Males

1645

M18-39

1645

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1511

Males

1430

M18-39

1430

30K→20M

18.6 - 20.0 mi

Top 5%
×5stories
+64ft-50ft

Overall

1300

Males

1228

M18-39

1228

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1808

Males

1703

M18-39

1703

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1881

Males

1765

M18-39

1765

35K→23M

21.8 - 23.0 mi

Top 7%
×5stories
+23ft-63ft

Overall

1886

Males

1763

M18-39

1763

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2313

Males

2138

M18-39

2138

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2285

Males

2090

M18-39

2090

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2670

Males

2372

M18-39

2372

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

3168

Males

2800

M18-39

2800

Passing Analysis

Category:
Athletes Passed
1771
Passed By
228
Net Change
+1543
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3591
5K → 10K38631+355#3591#3236
10K → 15K2959+286#3236#2950
15K → 20K2176+211#2950#2739
20K → Half1115-4#2739#2743
Half → 25K2124+208#2743#2535
25K → 30K2665+261#2535#2274
30K → 20M1081+107#2274#2167
20M → 21M5521+34#2167#2133
21M → 35K379+28#2133#2105
35K → 23M6615+51#2105#2054
23M → 24M5221+31#2054#2023
24M → 40K3528+7#2023#2016
40K → 25.2M118+3#2016#2013
25.2M → Finish2055-35#2013#2048
TOTALS1771228+1543
📊

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