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BOSTON MARATHON 2025

Ronald Sampson

Bib: 30987•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
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
25:57
Rank: #19021
Start → 5K
25:57 | 8:21/mi
10K· 6.21 mi
49:27
Rank: #16148 (+2873)
5K → 10K
23:30 | 7:34/mi
15K· 9.32 mi
1:13:12
Rank: #15117 (+1031)
10K → 15K
23:45 | 7:39/mi
20K· 12.43 mi
1:37:45
Rank: #14802 (+315)
15K → 20K
24:33 | 7:54/mi
Half· 13.11 mi
1:42:54
Rank: #14666 (+136)
20K → Half
5:09 | 7:33/mi
25K· 15.53 mi
2:02:52
Rank: #14804 (-138)
Half → 25K
19:58 | 8:14/mi
30K· 18.64 mi
2:29:12
Rank: #14765 (+39)
25K → 30K
26:20 | 8:29/mi
20M
2:41:21
Rank: #14876 (-111)
30K → 20M
12:09 | 8:56/mi
21M
2:51:11
Rank: #15040 (-164)
20M → 21M
9:50 | 9:50/mi
35K· 21.75 mi
2:57:28
Rank: #15019 (+21)
21M → 35K
6:17 | 8:24/mi
23M
3:08:39
Rank: #15036 (-17)
35K → 23M
11:11 | 8:56/mi
24M
3:16:59
Rank: #14934 (+102)
23M → 24M
8:20 | 8:20/mi
40K· 24.85 mi
3:24:39
Rank: #14983 (-49)
24M → 40K
7:40 | 8:58/mi
25.2M
3:28:06
Rank: #15012 (-29)
40K → 25.2M
3:27 | 10:00/mi
Finish· 26.22 mi
3:35:57
Rank: #14814 (+198)
25.2M → Finish
7:51 | 7:42/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:54
Pace7:51 /mi
2nd Half
Distance13.11 mi
Time1:53:03
Pace8:37 /mi
📊Positive Split: 9.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:1825:578:2125:57
8:21
-
10K
6.21 mi12:09:4849:277:5723:30
7:34
-0:47
15K
9.32 mi12:33:331:13:127:5123:45
7:39
+0:05
20K
12.43 mi12:58:061:37:457:5224:33
7:54
+0:15
Half
13.11 mi13:03:151:42:547:515:09
7:33
-0:21
25K
15.53 mi13:23:132:02:527:5519:58
8:14
+0:41
30K
18.64 mi13:49:332:29:128:0026:20
8:29
+0:15
20M
20.00 mi14:01:422:41:218:0412:09
8:56
+0:27
21M
21.00 mi14:11:322:51:118:099:50
9:50
+0:54
35K
21.75 mi14:17:492:57:288:106:17
8:24
-1:26
23M
23.00 mi14:29:003:08:398:1211:11
8:56
+0:32
24M
24.00 mi14:37:203:16:598:128:20
8:20
-0:36
40K
24.85 mi14:45:003:24:398:147:40
8:58
+0:38
25.2M
25.20 mi14:48:273:28:068:153:27
10:00
+1:02
Finish
26.22 mi14:56:183:35:578:157:51
7:42
-2:18

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

7:33 /mi

Average Pace

8:15 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:24:48

39% of race

Time at Steady Pace

1:26:52

40% of race

Time at Slower Pace

44:17

21% of race

Average Pace: 8:14 /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 mi11:46:1825:578:2125:57
8:21
#19021
10K
6.21 mi12:09:4849:277:5723:30
7:34
#16148
15K
9.32 mi12:33:331:13:127:5123:45
7:39
#15117
20K
12.43 mi12:58:061:37:457:5224:33
7:54
#14802
Half
13.11 mi13:03:151:42:547:515:09
7:33
#14666
25K
15.53 mi13:23:132:02:527:5519:58
8:14
#14804
30K
18.64 mi13:49:332:29:128:0026:20
8:29
#14765
20M
20.00 mi14:01:422:41:218:0412:09
8:56
#14876
21M
21.00 mi14:11:322:51:118:099:50
9:50
#15040
35K
21.75 mi14:17:492:57:288:106:17
8:24
#15019
23M
23.00 mi14:29:003:08:398:1211:11
8:56
#15036
24M
24.00 mi14:37:203:16:598:128:20
8:20
#14934
40K
24.85 mi14:45:003:24:398:147:40
8:58
#14983
25.2M
25.20 mi14:48:273:28:068:153:27
10:00
#15012
Finish
26.22 mi14:56:183:35:578:157:51
7:42
#14814
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi19021120391203912982(Top 46%)9513(Top 59%)9513(Top 169%)
10K6.21 mi3.10 mi16148+287310866+117310866+117312692(Top 45%)9465(Top 59%)9465(Top 168%)
15K9.32 mi3.11 mi15117+103110448+41810448+41812982(Top 46%)9513(Top 59%)9513(Top 169%)
20K12.43 mi3.11 mi14802+31510284+16410284+16414096(Top 50%)9913(Top 62%)9913(Top 176%)
Half13.11 mi0.68 mi14666+13610233+5110233+5112116(Top 43%)9088(Top 56%)9088(Top 161%)
25K15.53 mi2.42 mi14804-13810251-1810251-1815513(Top 55%)10438(Top 65%)10438(Top 185%)
30K18.64 mi3.11 mi14765+3910182+6910182+6914598(Top 51%)9882(Top 61%)9882(Top 175%)
20M20.00 mi1.36 mi14876-11110211-2910211-2916456(Top 58%)10558(Top 66%)10558(Top 187%)
21M21.00 mi1.00 mi15040-16410249-3810249-3817612(Top 62%)10968(Top 68%)10968(Top 194%)
35K21.75 mi0.75 mi15019+2110228+2110228+2114828(Top 52%)9645(Top 60%)9645(Top 171%)
23M23.00 mi1.25 mi15036-1710207+2110207+2115851(Top 56%)9999(Top 62%)9999(Top 177%)
24M24.00 mi1.00 mi14934+10210124+8310124+8313470(Top 47%)8889(Top 55%)8889(Top 158%)
40K24.85 mi0.85 mi14983-4910115+910115+916081(Top 57%)9954(Top 62%)9954(Top 176%)
25.2M25.20 mi0.35 mi15012-2910111+410111+416984(Top 60%)10349(Top 64%)10349(Top 183%)
Finish26.22 mi1.02 mi14814+19810007+10410007+10410718(Top 38%)7372(Top 46%)7372(Top 131%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21stories
+97ft-345ft

Overall

12982

Males

9513

M18-39

9513

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

12692

Males

9465

M18-39

9465

10K→15K

6.2 - 9.3 mi

Top 46%
×3stories
+67ft-78ft

Overall

12982

Males

9513

M18-39

9513

15K→20K

9.3 - 12.4 mi

Top 50%
×5stories
+106ft-86ft

Overall

14096

Males

9913

M18-39

9913

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

12116

Males

9088

M18-39

9088

Half→25K

13.1 - 15.5 mi

Top 55%
×4stories
+66ft-88ft

Overall

15513

Males

10438

M18-39

10438

25K→30K

15.5 - 18.6 mi

Top 51%
×9stories
+181ft-148ft

Overall

14598

Males

9882

M18-39

9882

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

16456

Males

10558

M18-39

10558

20M→21M

20.0 - 21.0 mi

Top 62%
×8stories
+106ft-24ft

Overall

17612

Males

10968

M18-39

10968

21M→35K

21.0 - 21.8 mi

Top 52%
×7stories
+17ft-86ft

Overall

14828

Males

9645

M18-39

9645

35K→23M

21.8 - 23.0 mi

Top 56%
×5stories
+23ft-63ft

Overall

15851

Males

9999

M18-39

9999

23M→24M

23.0 - 24.0 mi

Top 47%
×6stories
+12ft-82ft

Overall

13470

Males

8889

M18-39

8889

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

16081

Males

9954

M18-39

9954

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

16984

Males

10349

M18-39

10349

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2stories
+22ft-21ft

Overall

10718

Males

7372

M18-39

7372

Passing Analysis

Category:
Athletes Passed
5595
Passed By
1388
Net Change
+4207
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19021
5K → 10K28752+2873#19021#16148
10K → 15K10376+1031#16148#15117
15K → 20K37459+315#15117#14802
20K → Half1371+136#14802#14666
Half → 25K135273-138#14666#14804
25K → 30K274235+39#14804#14765
30K → 20M92203-111#14765#14876
20M → 21M77241-164#14876#15040
21M → 35K6342+21#15040#15019
35K → 23M106123-17#15019#15036
23M → 24M13533+102#15036#14934
24M → 40K53102-49#14934#14983
40K → 25.2M2958-29#14983#15012
25.2M → Finish20810+198#15012#14814
TOTALS55951388+4207
📊

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