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BOSTON MARATHON 2025

Brock Johnson

Bib: 6827•M

IA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 38%
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
20:40
Rank: #5050
Start → 5K
20:40 | 6:39/mi
10K· 6.21 mi
41:21
Rank: #4972 (+78)
5K → 10K
20:41 | 6:39/mi
15K· 9.32 mi
1:01:56
Rank: #4762 (+210)
10K → 15K
20:35 | 6:38/mi
20K· 12.43 mi
1:22:48
Rank: #4673 (+89)
15K → 20K
20:52 | 6:43/mi
Half· 13.11 mi
1:27:19
Rank: #4653 (+20)
20K → Half
4:31 | 6:37/mi
25K· 15.53 mi
1:43:49
Rank: #4655 (-2)
Half → 25K
16:30 | 6:48/mi
30K· 18.64 mi
2:08:20
Rank: #5853 (-1198)
25K → 30K
24:31 | 7:53/mi
20M
2:20:51
Rank: #6666 (-813)
30K → 20M
12:31 | 9:13/mi
21M
2:32:04
Rank: #7694 (-1028)
20M → 21M
11:13 | 11:13/mi
35K· 21.75 mi
2:39:24
Rank: #8296 (-602)
21M → 35K
7:20 | 9:48/mi
23M
2:52:04
Rank: #9340 (-1044)
35K → 23M
12:40 | 10:07/mi
24M
3:01:36
Rank: #9940 (-600)
23M → 24M
9:32 | 9:32/mi
40K· 24.85 mi
3:09:46
Rank: #10365 (-425)
24M → 40K
8:10 | 9:33/mi
25.2M
3:13:12
Rank: #10474 (-109)
40K → 25.2M
3:26 | 9:57/mi
Finish· 26.22 mi
3:21:54
Rank: #10698 (-224)
25.2M → Finish
8:42 | 8:32/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:19
Pace6:40 /mi
2nd Half
Distance13.11 mi
Time1:54:35
Pace8:44 /mi
📊Positive Split: 31.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:0220:406:3920:40
6:39
-
10K
6.21 mi10:46:4341:216:3920:41
6:39
0:00
15K
9.32 mi11:07:181:01:566:3920:35
6:38
-0:01
20K
12.43 mi11:28:101:22:486:4020:52
6:43
+0:05
Half
13.11 mi11:32:411:27:196:404:31
6:37
-0:06
25K
15.53 mi11:49:111:43:496:4116:30
6:48
+0:11
30K
18.64 mi12:13:422:08:206:5324:31
7:53
+1:05
20M
20.00 mi12:26:132:20:517:0312:31
9:13
+1:20
21M
21.00 mi12:37:262:32:047:1411:13
11:13
+2:00
35K
21.75 mi12:44:462:39:247:207:20
9:48
-1:25
23M
23.00 mi12:57:262:52:047:2912:40
10:07
+0:19
24M
24.00 mi13:06:583:01:367:349:32
9:32
-0:35
40K
24.85 mi13:15:083:09:467:388:10
9:33
+0:01
25.2M
25.20 mi13:18:343:13:127:403:26
9:57
+0:24
Finish
26.22 mi13:27:163:21:547:428:42
8:32
-1:25

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

6:37 /mi

Average Pace

7:42 /mi

Slowest Pace

11:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:49

51% of race

Time at Steady Pace

45:44

23% of race

Time at Slower Pace

52:21

26% of race

Average Pace: 7:42 /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 mi10:26:0220:406:3920:40
6:39
#5050
10K
6.21 mi10:46:4341:216:3920:41
6:39
#4972
15K
9.32 mi11:07:181:01:566:3920:35
6:38
#4762
20K
12.43 mi11:28:101:22:486:4020:52
6:43
#4673
Half
13.11 mi11:32:411:27:196:404:31
6:37
#4653
25K
15.53 mi11:49:111:43:496:4116:30
6:48
#4655
30K
18.64 mi12:13:422:08:206:5324:31
7:53
#5853
20M
20.00 mi12:26:132:20:517:0312:31
9:13
#6666
21M
21.00 mi12:37:262:32:047:1411:13
11:13
#7694
35K
21.75 mi12:44:462:39:247:207:20
9:48
#8296
23M
23.00 mi12:57:262:52:047:2912:40
10:07
#9340
24M
24.00 mi13:06:583:01:367:349:32
9:32
#9940
40K
24.85 mi13:15:083:09:467:388:10
9:33
#10365
25.2M
25.20 mi13:18:343:13:127:403:26
9:57
#10474
Finish
26.22 mi13:27:163:21:547:428:42
8:32
#10698
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5050471647164471(Top 16%)4192(Top 26%)4192(Top 74%)
10K6.21 mi3.10 mi4972+784638+784638+784965(Top 17%)4635(Top 29%)4635(Top 82%)
15K9.32 mi3.11 mi4762+2104453+1854453+1854471(Top 16%)4192(Top 26%)4192(Top 74%)
20K12.43 mi3.11 mi4673+894365+884365+884597(Top 16%)4275(Top 27%)4275(Top 76%)
Half13.11 mi0.68 mi4653+204348+174348+174664(Top 16%)4357(Top 27%)4357(Top 77%)
25K15.53 mi2.42 mi4655-24341+74341+74928(Top 17%)4529(Top 28%)4529(Top 80%)
30K18.64 mi3.11 mi5853-11985325-9845325-98410557(Top 37%)7961(Top 49%)7961(Top 141%)
20M20.00 mi1.36 mi6666-8135933-6085933-60817806(Top 63%)11156(Top 69%)11156(Top 198%)
21M21.00 mi1.00 mi7694-10286615-6826615-68221933(Top 77%)12937(Top 80%)12937(Top 229%)
35K21.75 mi0.75 mi8296-6026970-3556970-35521311(Top 75%)12573(Top 78%)12573(Top 223%)
23M23.00 mi1.25 mi9340-10447527-5577527-55720851(Top 73%)12314(Top 76%)12314(Top 218%)
24M24.00 mi1.00 mi9940-6007803-2767803-27619708(Top 69%)11718(Top 73%)11718(Top 208%)
40K24.85 mi0.85 mi10365-4257984-1817984-18118881(Top 66%)11256(Top 70%)11256(Top 200%)
25.2M25.20 mi0.35 mi10474-1098026-428026-4216731(Top 59%)10214(Top 63%)10214(Top 181%)
Finish26.22 mi1.02 mi10698-2248099-738099-7316414(Top 58%)10107(Top 63%)10107(Top 179%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4471

Males

4192

M18-39

4192

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4965

Males

4635

M18-39

4635

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4471

Males

4192

M18-39

4192

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4597

Males

4275

M18-39

4275

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4664

Males

4357

M18-39

4357

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4928

Males

4529

M18-39

4529

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

10557

Males

7961

M18-39

7961

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

17806

Males

11156

M18-39

11156

20M→21M

20.0 - 21.0 mi

Top 77%
×8stories
+106ft-24ft

Overall

21933

Males

12937

M18-39

12937

21M→35K

21.0 - 21.8 mi

Top 75%
×7stories
+17ft-86ft

Overall

21311

Males

12573

M18-39

12573

35K→23M

21.8 - 23.0 mi

Top 73%
×5stories
+23ft-63ft

Overall

20851

Males

12314

M18-39

12314

23M→24M

23.0 - 24.0 mi

Top 69%
×6stories
+12ft-82ft

Overall

19708

Males

11718

M18-39

11718

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18881

Males

11256

M18-39

11256

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

16731

Males

10214

M18-39

10214

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2stories
+22ft-21ft

Overall

16414

Males

10107

M18-39

10107

Passing Analysis

Category:
Athletes Passed
873
Passed By
6519
Net Change
-5648
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5050
5K → 10K224146+78#5050#4972
10K → 15K23525+210#4972#4762
15K → 20K16374+89#4762#4673
20K → Half3616+20#4673#4653
Half → 25K105107-2#4653#4655
25K → 30K291227-1198#4655#5853
30K → 20M7820-813#5853#6666
20M → 21M31031-1028#6666#7694
21M → 35K2604-602#7694#8296
35K → 23M111055-1044#8296#9340
23M → 24M9609-600#9340#9940
24M → 40K18441-425#9940#10365
40K → 25.2M10119-109#10365#10474
25.2M → Finish21245-224#10474#10698
TOTALS8736519-5648
📊

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