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BOSTON MARATHON 2025

Cosme Primo De Rivera

Bib: 31561•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
8:54/mi
27:40
↑ 97↓ 3451.5%
10K· 6.21 mi
8:43/mi
54:46
↑ 79↓ 1380.4%
15K· 9.32 mi
8:53/mi
1:22:23
↑ 67↓ 78
20K· 12.43 mi
8:57/mi
1:50:12
↑ 106↓ 860.1%
Half· 13.11 mi
8:56/mi
1:56:18
↑ 19↓ 370.5%
25K· 15.53 mi
9:29/mi
2:19:17
↑ 66↓ 880.2%
30K· 18.64 mi
11:12/mi
2:54:04
↑ 181↓ 1480.2%
20M
11:45/mi
3:10:02
↑ 64↓ 500.2%
21M
13:27/mi
3:23:29
↑ 106↓ 241.6%
35K· 21.75 mi
11:38/mi
3:32:11
↑ 17↓ 861.7%
23M
12:42/mi
3:48:05
↑ 23↓ 630.6%
24M
12:01/mi
4:00:06
↓ 821.3%
40K· 24.85 mi
12:41/mi
4:10:57
↓ 200.3%
25.2M
12:48/mi
4:15:22
↑ 13↓ 160.2%
Finish· 26.22 mi
10:40/mi
4:26:14
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:18
Pace8:52 /mi
2nd Half
Distance13.11 mi
Time2:29:56
Pace11:26 /mi
📊Positive Split: 28.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:5427:408:5427:40
8:54
-
10K
6.21 mi12:19:0054:468:4927:06
8:43
-0:11
15K
9.32 mi12:46:371:22:238:5027:37
8:53
+0:10
20K
12.43 mi13:14:261:50:128:5227:49
8:57
+0:04
Half
13.11 mi13:20:321:56:188:526:06
8:56
-0:01
25K
15.53 mi13:43:312:19:178:5822:59
9:29
+0:33
30K
18.64 mi14:18:182:54:049:2034:47
11:12
+1:43
20M
20.00 mi14:34:163:10:029:3015:58
11:45
+0:33
21M
21.00 mi14:47:433:23:299:4113:27
13:27
+1:42
35K
21.75 mi14:56:253:32:119:458:42
11:38
-1:49
23M
23.00 mi15:12:193:48:059:5515:54
12:42
+1:04
24M
24.00 mi15:24:204:00:0610:0012:01
12:01
-0:41
40K
24.85 mi15:35:114:10:5710:0610:51
12:41
+0:40
25.2M
25.20 mi15:39:364:15:2210:084:25
12:48
+0:07
Finish
26.22 mi15:50:284:26:1410:1010:52
10:40
-2:08

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

8:43 /mi

Average Pace

10:10 /mi

Slowest Pace

13:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:19:17

52% of race

Time at Steady Pace

1:22:20

31% of race

Time at Slower Pace

44:37

17% of race

Average Pace: 10:09 /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 mi11:51:5427:408:5427:40
8:54
#22013
10K
6.21 mi12:19:0054:468:4927:06
8:43
#21520
15K
9.32 mi12:46:371:22:238:5027:37
8:53
#21475
20K
12.43 mi13:14:261:50:128:5227:49
8:57
#21256
Half
13.11 mi13:20:321:56:188:526:06
8:56
#21276
25K
15.53 mi13:43:312:19:178:5822:59
9:29
#21416
30K
18.64 mi14:18:182:54:049:2034:47
11:12
#22295
20M
20.00 mi14:34:163:10:029:3015:58
11:45
#22566
21M
21.00 mi14:47:433:23:299:4113:27
13:27
#22840
35K
21.75 mi14:56:253:32:119:458:42
11:38
#22965
23M
23.00 mi15:12:193:48:059:5515:54
12:42
#23246
24M
24.00 mi15:24:204:00:0610:0012:01
12:01
#23401
40K
24.85 mi15:35:114:10:5710:0610:51
12:41
#23565
25.2M
25.20 mi15:39:364:15:2210:084:25
12:48
#23591
Finish
26.22 mi15:50:284:26:1410:1010:52
10:40
#23623
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi22013133221332221514(Top 76%)13174(Top 82%)13174(Top 660%)
10K6.21 mi3.10 mi21520+49313110+21213110+21221001(Top 74%)12928(Top 80%)12928(Top 648%)
15K9.32 mi3.11 mi21475+4513127-1713127-1721514(Top 76%)13174(Top 82%)13174(Top 660%)
20K12.43 mi3.11 mi21256+21913023+10413023+10420732(Top 73%)12771(Top 79%)12771(Top 640%)
Half13.11 mi0.68 mi21276-2013031-813031-821565(Top 76%)13169(Top 82%)13169(Top 660%)
25K15.53 mi2.42 mi21416-14013078-4713078-4721786(Top 77%)13192(Top 82%)13192(Top 661%)
30K18.64 mi3.11 mi22295-87913444-36613444-36624359(Top 86%)14237(Top 88%)14237(Top 713%)
20M20.00 mi1.36 mi22566-27113533-8913533-8924913(Top 88%)14424(Top 90%)14424(Top 723%)
21M21.00 mi1.00 mi22840-27413634-10113634-10125605(Top 90%)14676(Top 91%)14676(Top 735%)
35K21.75 mi0.75 mi22965-12513684-5013684-5025302(Top 89%)14491(Top 90%)14491(Top 726%)
23M23.00 mi1.25 mi23246-28113786-10213786-10226041(Top 92%)14860(Top 92%)14860(Top 744%)
24M24.00 mi1.00 mi23401-15513850-6413850-6425699(Top 90%)14651(Top 91%)14651(Top 734%)
40K24.85 mi0.85 mi23565-16413903-5313903-5325917(Top 91%)14740(Top 92%)14740(Top 738%)
25.2M25.20 mi0.35 mi23591-2613909-613909-624746(Top 87%)14138(Top 88%)14138(Top 708%)
Finish26.22 mi1.02 mi23623-32139091390924651(Top 87%)14104(Top 88%)14104(Top 707%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

21514

Males

13174

M50-54

13174

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

21001

Males

12928

M50-54

12928

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

21514

Males

13174

M50-54

13174

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

20732

Males

12771

M50-54

12771

20K→Half

12.4 - 13.1 mi

Top 76%
×2story building
+19ft-37ft

Overall

21565

Males

13169

M50-54

13169

Half→25K

13.1 - 15.5 mi

Top 77%
×4story building
+66ft-88ft

Overall

21786

Males

13192

M50-54

13192

25K→30K

15.5 - 18.6 mi

Top 86%
×9story building
+181ft-148ft

Overall

24359

Males

14237

M50-54

14237

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

24913

Males

14424

M50-54

14424

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

25605

Males

14676

M50-54

14676

21M→35K

21.0 - 21.8 mi

Top 89%
×7story building
+17ft-86ft

Overall

25302

Males

14491

M50-54

14491

35K→23M

21.8 - 23.0 mi

Top 92%
×5story building
+23ft-63ft

Overall

26041

Males

14860

M50-54

14860

23M→24M

23.0 - 24.0 mi

Top 90%
×6story building
+12ft-82ft

Overall

25699

Males

14651

M50-54

14651

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

25917

Males

14740

M50-54

14740

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

24746

Males

14138

M50-54

14138

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

24651

Males

14104

M50-54

14104

Passing Analysis

Category:
Athletes Passed
1461
Passed By
3071
Net Change
-1610
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22013
5K → 10K58693+493#22013#21520
10K → 15K231186+45#21520#21475
15K → 20K31394+219#21475#21256
20K → Half2545-20#21256#21276
Half → 25K110250-140#21276#21416
25K → 30K38917-879#21416#22295
30K → 20M28299-271#22295#22566
20M → 21M18292-274#22566#22840
21M → 35K15140-125#22840#22965
35K → 23M22303-281#22965#23246
23M → 24M17172-155#23246#23401
24M → 40K10174-164#23401#23565
40K → 25.2M1339-26#23565#23591
25.2M → Finish3567-32#23591#23623
TOTALS14613071-1610
📊

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