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BOSTON MARATHON 2025

Sam Atherton

Bib: 3864•M

TN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 21%
Gender (Male)
#0 / 16105
Top 33%
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
19:13
Rank: #1781
Start → 5K
6:11/mi
19:13 split
10K· 6.21 mi
38:43
Rank: #2034 (-253)
5K → 10K
6:17/mi
19:30 split
15K· 9.32 mi
59:16
Rank: #2729 (-695)
10K → 15K
6:37/mi
20:33 split
20K· 12.43 mi
1:20:58
Rank: #3630 (-901)
15K → 20K
6:59/mi
21:42 split
Half· 13.11 mi
1:25:46
Rank: #3788 (-158)
20K → Half
7:02/mi
4:48 split
25K· 15.53 mi
1:43:20
Rank: #4389 (-601)
Half → 25K
7:15/mi
17:34 split
30K· 18.64 mi
2:08:21
Rank: #5858 (-1469)
25K → 30K
8:03/mi
25:01 split
20M
2:19:03
Rank: #6078 (-220)
30K → 20M
7:52/mi
10:42 split
21M
2:27:00
Rank: #6097 (-19)
20M → 21M
7:57/mi
7:57 split
35K· 21.75 mi
2:32:22
Rank: #6067 (+30)
21M → 35K
7:10/mi
5:22 split
23M
2:41:40
Rank: #5975 (+92)
35K → 23M
7:26/mi
9:18 split
24M
2:49:34
Rank: #6101 (-126)
23M → 24M
7:54/mi
7:54 split
40K· 24.85 mi
2:55:53
Rank: #6032 (+69)
24M → 40K
7:23/mi
6:19 split
25.2M
2:58:44
Rank: #6030 (+2)
40K → 25.2M
8:16/mi
2:51 split
Finish· 26.22 mi
3:06:08
Rank: #6029 (+1)
25.2M → Finish
7:16/mi
7:24 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:46
Pace6:33 /mi
2nd Half
Distance13.11 mi
Time1:40:22
Pace7:39 /mi
📊Positive Split: 17.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:3419:136:1119:13
6:11
-
10K
6.21 mi10:41:0438:436:1419:30
6:17
+0:06
15K
9.32 mi11:01:3759:166:2220:33
6:37
+0:20
20K
12.43 mi11:23:191:20:586:3121:42
6:59
+0:22
Half
13.11 mi11:28:071:25:466:334:48
7:02
+0:03
25K
15.53 mi11:45:411:43:206:3917:34
7:15
+0:13
30K
18.64 mi12:10:422:08:216:5325:01
8:03
+0:48
20M
20.00 mi12:21:242:19:036:5710:42
7:52
-0:11
21M
21.00 mi12:29:212:27:007:007:57
7:57
+0:05
35K
21.75 mi12:34:432:32:227:005:22
7:10
-0:47
23M
23.00 mi12:44:012:41:407:029:18
7:26
+0:16
24M
24.00 mi12:51:552:49:347:047:54
7:54
+0:28
40K
24.85 mi12:58:142:55:537:056:19
7:23
-0:31
25.2M
25.20 mi13:01:052:58:447:062:51
8:16
+0:53
Finish
26.22 mi13:08:293:06:087:067:24
7:16
-1:00

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

6:11 /mi

Average Pace

7:06 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

59:16

32% of race

Time at Steady Pace

1:12:27

39% of race

Time at Slower Pace

54:25

29% of race

Average Pace: 7:06 /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 mi10:21:3419:136:1119:13
6:11
#1781
10K
6.21 mi10:41:0438:436:1419:30
6:17
#2034
15K
9.32 mi11:01:3759:166:2220:33
6:37
#2729
20K
12.43 mi11:23:191:20:586:3121:42
6:59
#3630
Half
13.11 mi11:28:071:25:466:334:48
7:02
#3788
25K
15.53 mi11:45:411:43:206:3917:34
7:15
#4389
30K
18.64 mi12:10:422:08:216:5325:01
8:03
#5858
20M
20.00 mi12:21:242:19:036:5710:42
7:52
#6078
21M
21.00 mi12:29:212:27:007:007:57
7:57
#6097
35K
21.75 mi12:34:432:32:227:005:22
7:10
#6067
23M
23.00 mi12:44:012:41:407:029:18
7:26
#5975
24M
24.00 mi12:51:552:49:347:047:54
7:54
#6101
40K
24.85 mi12:58:142:55:537:056:19
7:23
#6032
25.2M
25.20 mi13:01:052:58:447:062:51
8:16
#6030
Finish
26.22 mi13:08:293:06:087:067:24
7:16
#6029
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1781169216924344(Top 15%)4078(Top 25%)4078(Top 72%)
10K6.21 mi3.10 mi2034-2531939-2471939-2472270(Top 8%)2171(Top 13%)2171(Top 38%)
15K9.32 mi3.11 mi2729-6952601-6622601-6624344(Top 15%)4078(Top 25%)4078(Top 72%)
20K12.43 mi3.11 mi3630-9013436-8353436-8356768(Top 24%)6029(Top 37%)6029(Top 107%)
Half13.11 mi0.68 mi3788-1583573-1373573-1377761(Top 27%)6723(Top 42%)6723(Top 119%)
25K15.53 mi2.42 mi4389-6014113-5404113-5407929(Top 28%)6714(Top 42%)6714(Top 119%)
30K18.64 mi3.11 mi5858-14695328-12155328-121511740(Top 41%)8545(Top 53%)8545(Top 151%)
20M20.00 mi1.36 mi6078-2205482-1545482-1549500(Top 33%)7252(Top 45%)7252(Top 129%)
21M21.00 mi1.00 mi6097-195479+35479+37045(Top 25%)5696(Top 35%)5696(Top 101%)
35K21.75 mi0.75 mi6067+305446+335446+336395(Top 23%)5309(Top 33%)5309(Top 94%)
23M23.00 mi1.25 mi5975+925363+835363+836182(Top 22%)5075(Top 32%)5075(Top 90%)
24M24.00 mi1.00 mi6101-1265442-795442-7910495(Top 37%)7408(Top 46%)7408(Top 131%)
40K24.85 mi0.85 mi6032+695373+695373+696101(Top 21%)4901(Top 30%)4901(Top 87%)
25.2M25.20 mi0.35 mi6030+25361+125361+127346(Top 26%)5511(Top 34%)5511(Top 98%)
Finish26.22 mi1.02 mi6029+15340+215340+217445(Top 26%)5578(Top 35%)5578(Top 99%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

4344

Males

4078

M18-39

4078

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2270

Males

2171

M18-39

2171

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

4344

Males

4078

M18-39

4078

15K→20K

9.3 - 12.4 mi

Top 24%
×5stories
+106ft-86ft

Overall

6768

Males

6029

M18-39

6029

20K→Half

12.4 - 13.1 mi

Top 27%
×2stories
+19ft-37ft

Overall

7761

Males

6723

M18-39

6723

Half→25K

13.1 - 15.5 mi

Top 28%
×4stories
+66ft-88ft

Overall

7929

Males

6714

M18-39

6714

25K→30K

15.5 - 18.6 mi

Top 41%
×9stories
+181ft-148ft

Overall

11740

Males

8545

M18-39

8545

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

9500

Males

7252

M18-39

7252

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

7045

Males

5696

M18-39

5696

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

6395

Males

5309

M18-39

5309

35K→23M

21.8 - 23.0 mi

Top 22%
×5stories
+23ft-63ft

Overall

6182

Males

5075

M18-39

5075

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

10495

Males

7408

M18-39

7408

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

6101

Males

4901

M18-39

4901

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

7346

Males

5511

M18-39

5511

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

7445

Males

5578

M18-39

5578

Passing Analysis

Category:
Athletes Passed
534
Passed By
4782
Net Change
-4248
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1781
5K → 10K27280-253#1781#2034
10K → 15K5700-695#2034#2729
15K → 20K5906-901#2729#3630
20K → Half2160-158#3630#3788
Half → 25K10611-601#3788#4389
25K → 30K201489-1469#4389#5858
30K → 20M26246-220#5858#6078
20M → 21M6281-19#6078#6097
21M → 35K5323+30#6097#6067
35K → 23M12230+92#6067#5975
23M → 24M26152-126#5975#6101
24M → 40K8920+69#6101#6032
40K → 25.2M2624+2#6032#6030
25.2M → Finish6160+1#6030#6029
TOTALS5344782-4248
📊

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