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BOSTON MARATHON 2025

Juan Simo

Bib: 10144•M

OH

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

Start
0:00:00
Race begins
5K· 3.11 mi
21:38
Rank: #7534
Start → 5K
21:38 | 6:58/mi
10K· 6.21 mi
43:09
Rank: #7472 (+62)
5K → 10K
21:31 | 6:56/mi
15K· 9.32 mi
1:05:52
Rank: #8254 (-782)
10K → 15K
22:43 | 7:19/mi
20K· 12.43 mi
1:31:39
Rank: #10540 (-2286)
15K → 20K
25:47 | 8:18/mi
Half· 13.11 mi
1:37:19
Rank: #10965 (-425)
20K → Half
5:40 | 8:18/mi
25K· 15.53 mi
2:00:37
Rank: #13574 (-2609)
Half → 25K
23:18 | 9:37/mi
30K· 18.64 mi
2:32:10
Rank: #15963 (-2389)
25K → 30K
31:33 | 10:09/mi
20M
2:45:12
Rank: #16256 (-293)
30K → 20M
13:02 | 9:35/mi
21M
2:56:18
Rank: #16674 (-418)
20M → 21M
11:06 | 11:06/mi
35K· 21.75 mi
3:03:20
Rank: #16807 (-133)
21M → 35K
7:02 | 9:24/mi
23M
3:15:35
Rank: #17033 (-226)
35K → 23M
12:15 | 9:47/mi
24M
3:26:12
Rank: #17486 (-453)
23M → 24M
10:37 | 10:37/mi
40K· 24.85 mi
3:36:12
Rank: #18002 (-516)
24M → 40K
10:00 | 11:42/mi
25.2M
3:40:25
Rank: #18177 (-175)
40K → 25.2M
4:13 | 12:14/mi
Finish· 26.22 mi
3:50:10
Rank: #18349 (-172)
25.2M → Finish
9:45 | 9:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:19
Pace7:25 /mi
2nd Half
Distance13.11 mi
Time2:12:51
Pace10:08 /mi
📊Positive Split: 36.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:2821:386:5821:38
6:58
-
10K
6.21 mi11:08:5943:096:5721:31
6:56
-0:02
15K
9.32 mi11:31:421:05:527:0422:43
7:19
+0:23
20K
12.43 mi11:57:291:31:397:2225:47
8:18
+0:59
Half
13.11 mi12:03:091:37:197:255:40
8:18
0:00
25K
15.53 mi12:26:272:00:377:4623:18
9:37
+1:19
30K
18.64 mi12:58:002:32:108:1031:33
10:09
+0:32
20M
20.00 mi13:11:022:45:128:1613:02
9:35
-0:34
21M
21.00 mi13:22:082:56:188:2411:06
11:06
+1:31
35K
21.75 mi13:29:103:03:208:267:02
9:24
-1:42
23M
23.00 mi13:41:253:15:358:3012:15
9:47
+0:23
24M
24.00 mi13:52:023:26:128:3610:37
10:37
+0:50
40K
24.85 mi14:02:023:36:128:4210:00
11:42
+1:05
25.2M
25.20 mi14:06:153:40:258:454:13
12:14
+0:32
Finish
26.22 mi14:16:003:50:108:479:45
9:34
-2:40

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

6:56 /mi

Average Pace

8:47 /mi

Slowest Pace

12:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:37:19

42% of race

Time at Steady Pace

1:36:55

42% of race

Time at Slower Pace

35:56

16% of race

Average Pace: 8:47 /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 mi10:47:2821:386:5821:38
6:58
#7534
10K
6.21 mi11:08:5943:096:5721:31
6:56
#7472
15K
9.32 mi11:31:421:05:527:0422:43
7:19
#8254
20K
12.43 mi11:57:291:31:397:2225:47
8:18
#10540
Half
13.11 mi12:03:091:37:197:255:40
8:18
#10965
25K
15.53 mi12:26:272:00:377:4623:18
9:37
#13574
30K
18.64 mi12:58:002:32:108:1031:33
10:09
#15963
20M
20.00 mi13:11:022:45:128:1613:02
9:35
#16256
21M
21.00 mi13:22:082:56:188:2411:06
11:06
#16674
35K
21.75 mi13:29:103:03:208:267:02
9:24
#16807
23M
23.00 mi13:41:253:15:358:3012:15
9:47
#17033
24M
24.00 mi13:52:023:26:128:3610:37
10:37
#17486
40K
24.85 mi14:02:023:36:128:4210:00
11:42
#18002
25.2M
25.20 mi14:06:153:40:258:454:13
12:14
#18177
Finish
26.22 mi14:16:003:50:108:479:45
9:34
#18349
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi75346702670210089(Top 36%)8138(Top 51%)8138(Top 341%)
10K6.21 mi3.10 mi7472+626636+666636+667443(Top 26%)6600(Top 41%)6600(Top 277%)
15K9.32 mi3.11 mi8254-7827135-4997135-49910089(Top 36%)8138(Top 51%)8138(Top 341%)
20K12.43 mi3.11 mi10540-22868393-12588393-125816930(Top 60%)11147(Top 69%)11147(Top 467%)
Half13.11 mi0.68 mi10965-4258613-2208613-22017936(Top 63%)11606(Top 72%)11606(Top 486%)
25K15.53 mi2.42 mi13574-26099732-11199732-111922207(Top 78%)13382(Top 83%)13382(Top 561%)
30K18.64 mi3.11 mi15963-238910718-98610718-98622068(Top 78%)13201(Top 82%)13201(Top 553%)
20M20.00 mi1.36 mi16256-29310801-8310801-8319556(Top 69%)11944(Top 74%)11944(Top 501%)
21M21.00 mi1.00 mi16674-41810942-14110942-14121650(Top 76%)12805(Top 80%)12805(Top 537%)
35K21.75 mi0.75 mi16807-13310985-4310985-4319929(Top 70%)11934(Top 74%)11934(Top 500%)
23M23.00 mi1.25 mi17033-22611033-4811033-4819729(Top 69%)11772(Top 73%)11772(Top 493%)
24M24.00 mi1.00 mi17486-45311198-16511198-16523103(Top 81%)13355(Top 83%)13355(Top 560%)
40K24.85 mi0.85 mi18002-51611404-20611404-20624466(Top 86%)13995(Top 87%)13995(Top 587%)
25.2M25.20 mi0.35 mi18177-17511471-6711471-6723630(Top 83%)13570(Top 84%)13570(Top 569%)
Finish26.22 mi1.02 mi18349-17211527-5611527-5621407(Top 75%)12481(Top 77%)12481(Top 523%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

10089

Males

8138

M45-49

8138

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

7443

Males

6600

M45-49

6600

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

10089

Males

8138

M45-49

8138

15K→20K

9.3 - 12.4 mi

Top 60%
×5stories
+106ft-86ft

Overall

16930

Males

11147

M45-49

11147

20K→Half

12.4 - 13.1 mi

Top 63%
×2stories
+19ft-37ft

Overall

17936

Males

11606

M45-49

11606

Half→25K

13.1 - 15.5 mi

Top 78%
×4stories
+66ft-88ft

Overall

22207

Males

13382

M45-49

13382

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

22068

Males

13201

M45-49

13201

30K→20M

18.6 - 20.0 mi

Top 69%
×5stories
+64ft-50ft

Overall

19556

Males

11944

M45-49

11944

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

21650

Males

12805

M45-49

12805

21M→35K

21.0 - 21.8 mi

Top 70%
×7stories
+17ft-86ft

Overall

19929

Males

11934

M45-49

11934

35K→23M

21.8 - 23.0 mi

Top 69%
×5stories
+23ft-63ft

Overall

19729

Males

11772

M45-49

11772

23M→24M

23.0 - 24.0 mi

Top 81%
×6stories
+12ft-82ft

Overall

23103

Males

13355

M45-49

13355

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

24466

Males

13995

M45-49

13995

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

23630

Males

13570

M45-49

13570

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2stories
+22ft-21ft

Overall

21407

Males

12481

M45-49

12481

Passing Analysis

Category:
Athletes Passed
511
Passed By
11324
Net Change
-10815
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7534
5K → 10K230168+62#7534#7472
10K → 15K25807-782#7472#8254
15K → 20K92293-2286#8254#10540
20K → Half1426-425#10540#10965
Half → 25K92618-2609#10965#13574
25K → 30K172406-2389#13574#15963
30K → 20M48341-293#15963#16256
20M → 21M32450-418#16256#16674
21M → 35K34167-133#16674#16807
35K → 23M59285-226#16807#17033
23M → 24M21474-453#17033#17486
24M → 40K5521-516#17486#18002
40K → 25.2M2177-175#18002#18177
25.2M → Finish19191-172#18177#18349
TOTALS51111324-10815
📊

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