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BOSTON MARATHON 2025

Julio Primo

Bib: 6536•M

NM

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 17%
Gender (Male)
#0 / 16105
Top 27%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:59
Rank: #3336
Start → 5K
19:59 | 6:26/mi
10K· 6.21 mi
39:47
Rank: #3086 (+250)
5K → 10K
19:48 | 6:22/mi
15K· 9.32 mi
59:37
Rank: #2982 (+104)
10K → 15K
19:50 | 6:23/mi
20K· 12.43 mi
1:19:38
Rank: #2908 (+74)
15K → 20K
20:01 | 6:27/mi
Half· 13.11 mi
1:23:56
Rank: #2877 (+31)
20K → Half
4:18 | 6:18/mi
25K· 15.53 mi
1:39:44
Rank: #2865 (+12)
Half → 25K
15:48 | 6:31/mi
30K· 18.64 mi
2:01:37
Rank: #3178 (-313)
25K → 30K
21:53 | 7:03/mi
20M
2:11:41
Rank: #3373 (-195)
30K → 20M
10:04 | 7:24/mi
21M
2:19:47
Rank: #3589 (-216)
20M → 21M
8:06 | 8:06/mi
35K· 21.75 mi
2:25:15
Rank: #3692 (-103)
21M → 35K
5:28 | 7:18/mi
23M
2:34:49
Rank: #3887 (-195)
35K → 23M
9:34 | 7:38/mi
24M
2:42:24
Rank: #4070 (-183)
23M → 24M
7:35 | 7:35/mi
40K· 24.85 mi
2:49:08
Rank: #4250 (-180)
24M → 40K
6:44 | 7:53/mi
25.2M
2:52:12
Rank: #4383 (-133)
40K → 25.2M
3:04 | 8:54/mi
Finish· 26.22 mi
3:00:28
Rank: #4789 (-406)
25.2M → Finish
8:16 | 8:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:56
Pace6:24 /mi
2nd Half
Distance13.11 mi
Time1:36:32
Pace7:22 /mi
📊Positive Split: 15.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:5519:596:2619:59
6:26
-
10K
6.21 mi10:44:4339:476:2419:48
6:22
-0:04
15K
9.32 mi11:04:3359:376:2419:50
6:23
+0:01
20K
12.43 mi11:24:341:19:386:2420:01
6:27
+0:04
Half
13.11 mi11:28:521:23:566:244:18
6:18
-0:09
25K
15.53 mi11:44:401:39:446:2515:48
6:31
+0:13
30K
18.64 mi12:06:332:01:376:3121:53
7:03
+0:32
20M
20.00 mi12:16:372:11:416:3510:04
7:24
+0:21
21M
21.00 mi12:24:432:19:476:398:06
8:06
+0:42
35K
21.75 mi12:30:112:25:156:415:28
7:18
-0:48
23M
23.00 mi12:39:452:34:496:449:34
7:38
+0:20
24M
24.00 mi12:47:202:42:246:467:35
7:35
-0:03
40K
24.85 mi12:54:042:49:086:486:44
7:53
+0:18
25.2M
25.20 mi12:57:082:52:126:503:04
8:54
+1:01
Finish
26.22 mi13:05:243:00:286:538:16
8:07
-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

6:18 /mi

Average Pace

6:53 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:44

55% of race

Time at Steady Pace

54:34

30% of race

Time at Slower Pace

26:10

14% of race

Average Pace: 6:53 /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 mi10:24:5519:596:2619:59
6:26
#3336
10K
6.21 mi10:44:4339:476:2419:48
6:22
#3086
15K
9.32 mi11:04:3359:376:2419:50
6:23
#2982
20K
12.43 mi11:24:341:19:386:2420:01
6:27
#2908
Half
13.11 mi11:28:521:23:566:244:18
6:18
#2877
25K
15.53 mi11:44:401:39:446:2515:48
6:31
#2865
30K
18.64 mi12:06:332:01:376:3121:53
7:03
#3178
20M
20.00 mi12:16:372:11:416:3510:04
7:24
#3373
21M
21.00 mi12:24:432:19:476:398:06
8:06
#3589
35K
21.75 mi12:30:112:25:156:415:28
7:18
#3692
23M
23.00 mi12:39:452:34:496:449:34
7:38
#3887
24M
24.00 mi12:47:202:42:246:467:35
7:35
#4070
40K
24.85 mi12:54:042:49:086:486:44
7:53
#4250
25.2M
25.20 mi12:57:082:52:126:503:04
8:54
#4383
Finish
26.22 mi13:05:243:00:286:538:16
8:07
#4789
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3336316831682838(Top 10%)2703(Top 17%)2703(Top 48%)
10K6.21 mi3.10 mi3086+2502935+2332935+2332871(Top 10%)2733(Top 17%)2733(Top 48%)
15K9.32 mi3.11 mi2982+1042841+942841+942838(Top 10%)2703(Top 17%)2703(Top 48%)
20K12.43 mi3.11 mi2908+742773+682773+682774(Top 10%)2641(Top 16%)2641(Top 47%)
Half13.11 mi0.68 mi2877+312742+312742+312531(Top 9%)2420(Top 15%)2420(Top 43%)
25K15.53 mi2.42 mi2865+122732+102732+102979(Top 10%)2833(Top 18%)2833(Top 50%)
30K18.64 mi3.11 mi3178-3133019-2873019-2874954(Top 17%)4499(Top 28%)4499(Top 80%)
20M20.00 mi1.36 mi3373-1953191-1723191-1726395(Top 23%)5448(Top 34%)5448(Top 97%)
21M21.00 mi1.00 mi3589-2163379-1883379-1887905(Top 28%)6187(Top 38%)6187(Top 110%)
35K21.75 mi0.75 mi3692-1033471-923471-927227(Top 25%)5811(Top 36%)5811(Top 103%)
23M23.00 mi1.25 mi3887-1953630-1593630-1597479(Top 26%)5848(Top 36%)5848(Top 104%)
24M24.00 mi1.00 mi4070-1833780-1503780-1508240(Top 29%)6230(Top 39%)6230(Top 110%)
40K24.85 mi0.85 mi4250-1803923-1433923-1439240(Top 33%)6633(Top 41%)6633(Top 118%)
25.2M25.20 mi0.35 mi4383-1334035-1124035-11211078(Top 39%)7484(Top 46%)7484(Top 133%)
Finish26.22 mi1.02 mi4789-4064378-3434378-34313618(Top 48%)8807(Top 55%)8807(Top 156%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2838

Males

2703

M18-39

2703

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2871

Males

2733

M18-39

2733

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2838

Males

2703

M18-39

2703

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2774

Males

2641

M18-39

2641

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2531

Males

2420

M18-39

2420

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2979

Males

2833

M18-39

2833

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4954

Males

4499

M18-39

4499

30K→20M

18.6 - 20.0 mi

Top 23%
×5stories
+64ft-50ft

Overall

6395

Males

5448

M18-39

5448

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

7905

Males

6187

M18-39

6187

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

7227

Males

5811

M18-39

5811

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

7479

Males

5848

M18-39

5848

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

8240

Males

6230

M18-39

6230

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9240

Males

6633

M18-39

6633

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

11078

Males

7484

M18-39

7484

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

13618

Males

8807

M18-39

8807

Passing Analysis

Category:
Athletes Passed
818
Passed By
2271
Net Change
-1453
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3336
5K → 10K28737+250#3336#3086
10K → 15K14945+104#3086#2982
15K → 20K11844+74#2982#2908
20K → Half376+31#2908#2877
Half → 25K7058+12#2877#2865
25K → 30K38351-313#2865#3178
30K → 20M26221-195#3178#3373
20M → 21M9225-216#3373#3589
21M → 35K13116-103#3589#3692
35K → 23M32227-195#3692#3887
23M → 24M20203-183#3887#4070
24M → 40K11191-180#4070#4250
40K → 25.2M6139-133#4250#4383
25.2M → Finish2408-406#4383#4789
TOTALS8182271-1453
📊

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