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BOSTON MARATHON 2025

Samuel Mansfield

Bib: 20800•M

NL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:12
Rank: #19487
Start → 5K
8:26/mi
26:12 split
10K· 6.21 mi
53:11
Rank: #20184 (-697)
5K → 10K
8:41/mi
26:59 split
15K· 9.32 mi
1:20:30
Rank: #20404 (-220)
10K → 15K
8:48/mi
27:19 split
20K· 12.43 mi
1:47:38
Rank: #20197 (+207)
15K → 20K
8:44/mi
27:08 split
Half· 13.11 mi
1:53:39
Rank: #20236 (-39)
20K → Half
8:49/mi
6:01 split
25K· 15.53 mi
2:15:49
Rank: #20317 (-81)
Half → 25K
9:09/mi
22:10 split
30K· 18.64 mi
2:47:38
Rank: #20835 (-518)
25K → 30K
10:14/mi
31:49 split
20M
3:03:34
Rank: #21358 (-523)
30K → 20M
11:43/mi
15:56 split
21M
3:15:54
Rank: #21650 (-292)
20M → 21M
12:20/mi
12:20 split
35K· 21.75 mi
3:25:23
Rank: #21986 (-336)
21M → 35K
12:41/mi
9:29 split
23M
3:41:14
Rank: #22349 (-363)
35K → 23M
12:40/mi
15:51 split
24M
3:54:13
Rank: #22661 (-312)
23M → 24M
12:59/mi
12:59 split
40K· 24.85 mi
4:05:52
Rank: #22962 (-301)
24M → 40K
13:38/mi
11:39 split
25.2M
4:11:06
Rank: #23094 (-132)
40K → 25.2M
15:11/mi
5:14 split
Finish· 26.22 mi
4:23:48
Rank: #23362 (-268)
25.2M → Finish
12:28/mi
12:42 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:39
Pace8:40 /mi
2nd Half
Distance13.11 mi
Time2:30:09
Pace11:27 /mi
📊Positive Split: 32.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:2726:128:2626:12
8:26
-
10K
6.21 mi11:47:2653:118:3426:59
8:41
+0:15
15K
9.32 mi12:14:451:20:308:3827:19
8:48
+0:07
20K
12.43 mi12:41:531:47:388:4027:08
8:44
-0:04
Half
13.11 mi12:47:541:53:398:406:01
8:49
+0:05
25K
15.53 mi13:10:042:15:498:4522:10
9:09
+0:20
30K
18.64 mi13:41:532:47:389:0031:49
10:14
+1:05
20M
20.00 mi13:57:493:03:349:1115:56
11:43
+1:29
21M
21.00 mi14:10:093:15:549:2012:20
12:20
+0:37
35K
21.75 mi14:19:383:25:239:279:29
12:41
+0:21
23M
23.00 mi14:35:293:41:149:3715:51
12:40
-0:01
24M
24.00 mi14:48:283:54:139:4612:59
12:59
+0:19
40K
24.85 mi15:00:074:05:529:5411:39
13:38
+0:39
25.2M
25.20 mi15:05:214:11:069:585:14
15:11
+1:33
Finish
26.22 mi15:18:034:23:4810:0412:42
12:28
-2:43

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

8:26 /mi

Average Pace

10:04 /mi

Slowest Pace

15:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:47:38

64% of race

Time at Steady Pace

1:06:18

25% of race

Time at Slower Pace

29:52

11% of race

Average Pace: 10:04 /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 mi11:20:2726:128:2626:12
8:26
#19487
10K
6.21 mi11:47:2653:118:3426:59
8:41
#20184
15K
9.32 mi12:14:451:20:308:3827:19
8:48
#20404
20K
12.43 mi12:41:531:47:388:4027:08
8:44
#20197
Half
13.11 mi12:47:541:53:398:406:01
8:49
#20236
25K
15.53 mi13:10:042:15:498:4522:10
9:09
#20317
30K
18.64 mi13:41:532:47:389:0031:49
10:14
#20835
20M
20.00 mi13:57:493:03:349:1115:56
11:43
#21358
21M
21.00 mi14:10:093:15:549:2012:20
12:20
#21650
35K
21.75 mi14:19:383:25:239:279:29
12:41
#21986
23M
23.00 mi14:35:293:41:149:3715:51
12:40
#22349
24M
24.00 mi14:48:283:54:139:4612:59
12:59
#22661
40K
24.85 mi15:00:074:05:529:5411:39
13:38
#22962
25.2M
25.20 mi15:05:214:11:069:585:14
15:11
#23094
Finish
26.22 mi15:18:034:23:4810:0412:42
12:28
#23362
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi19487122481224820987(Top 74%)12937(Top 80%)12937(Top 1028%)
10K6.21 mi3.10 mi20184-69712543-29512543-29520788(Top 73%)12820(Top 80%)12820(Top 1018%)
15K9.32 mi3.11 mi20404-22012644-10112644-10120987(Top 74%)12937(Top 80%)12937(Top 1028%)
20K12.43 mi3.11 mi20197+20712552+9212552+9219587(Top 69%)12281(Top 76%)12281(Top 975%)
Half13.11 mi0.68 mi20236-3912562-1012562-1020990(Top 74%)12903(Top 80%)12903(Top 1025%)
25K15.53 mi2.42 mi20317-8112595-3312595-3320535(Top 72%)12649(Top 79%)12649(Top 1005%)
30K18.64 mi3.11 mi20835-51812773-17812773-17822291(Top 78%)13297(Top 83%)13297(Top 1056%)
20M20.00 mi1.36 mi21358-52313002-22913002-22924877(Top 88%)14403(Top 89%)14403(Top 1144%)
21M21.00 mi1.00 mi21650-29213119-11713119-11724152(Top 85%)13981(Top 87%)13981(Top 1110%)
35K21.75 mi0.75 mi21986-33613254-13513254-13526657(Top 94%)15165(Top 94%)15165(Top 1205%)
23M23.00 mi1.25 mi22349-36313375-12113375-12125995(Top 92%)14837(Top 92%)14837(Top 1178%)
24M24.00 mi1.00 mi22661-31213495-12013495-12026840(Top 94%)15220(Top 95%)15220(Top 1209%)
40K24.85 mi0.85 mi22962-30113612-11713612-11726871(Top 95%)15218(Top 94%)15218(Top 1209%)
25.2M25.20 mi0.35 mi23094-13213672-6013672-6027249(Top 96%)15404(Top 96%)15404(Top 1224%)
Finish26.22 mi1.02 mi23362-26813793-12113793-12127262(Top 96%)15439(Top 96%)15439(Top 1226%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

20987

Males

12937

M60-64

12937

5K→10K

3.1 - 6.2 mi

Top 73%
×5story building
+79ft-138ft

Overall

20788

Males

12820

M60-64

12820

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

20987

Males

12937

M60-64

12937

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

19587

Males

12281

M60-64

12281

20K→Half

12.4 - 13.1 mi

Top 74%
×2story building
+19ft-37ft

Overall

20990

Males

12903

M60-64

12903

Half→25K

13.1 - 15.5 mi

Top 72%
×4story building
+66ft-88ft

Overall

20535

Males

12649

M60-64

12649

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

22291

Males

13297

M60-64

13297

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

24877

Males

14403

M60-64

14403

20M→21M

20.0 - 21.0 mi

Top 85%
×8story building
+106ft-24ft

Overall

24152

Males

13981

M60-64

13981

21M→35K

21.0 - 21.8 mi

Top 94%
×7story building
+17ft-86ft

Overall

26657

Males

15165

M60-64

15165

35K→23M

21.8 - 23.0 mi

Top 92%
×5story building
+23ft-63ft

Overall

25995

Males

14837

M60-64

14837

23M→24M

23.0 - 24.0 mi

Top 94%
×6story building
+12ft-82ft

Overall

26840

Males

15220

M60-64

15220

24M→40K

24.0 - 24.9 mi

Top 95%
×1story
+6ft-20ft

Overall

26871

Males

15218

M60-64

15218

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

27249

Males

15404

M60-64

15404

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2story building
+22ft-21ft

Overall

27262

Males

15439

M60-64

15439

Passing Analysis

Category:
Athletes Passed
825
Passed By
4700
Net Change
-3875
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19487
5K → 10K67764-697#19487#20184
10K → 15K122342-220#20184#20404
15K → 20K28376+207#20404#20197
20K → Half1958-39#20197#20236
Half → 25K137218-81#20236#20317
25K → 30K98616-518#20317#20835
30K → 20M22545-523#20835#21358
20M → 21M23315-292#21358#21650
21M → 35K3339-336#21650#21986
35K → 23M25388-363#21986#22349
23M → 24M16328-312#22349#22661
24M → 40K4305-301#22661#22962
40K → 25.2M0132-132#22962#23094
25.2M → Finish6274-268#23094#23362
TOTALS8254700-3875
📊

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