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BOSTON MARATHON 2025

Karl Johnson

Bib: 27116•M

SC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 27%
Gender (Male)
#0 / 16105
Top 40%
Division (M18-39)
#0 / 5642
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
7:34/mi
23:29
↑ 97↓ 3451.5%
10K· 6.21 mi
7:06/mi
45:33
↑ 79↓ 1380.4%
15K· 9.32 mi
7:10/mi
1:07:49
↑ 67↓ 78
20K· 12.43 mi
7:12/mi
1:30:11
↑ 106↓ 860.1%
Half· 13.11 mi
7:21/mi
1:35:12
↑ 19↓ 370.5%
25K· 15.53 mi
7:17/mi
1:52:51
↑ 66↓ 880.2%
30K· 18.64 mi
7:19/mi
2:15:36
↑ 181↓ 1480.2%
20M
7:21/mi
2:25:35
↑ 64↓ 500.2%
21M
7:40/mi
2:33:15
↑ 106↓ 241.6%
35K· 21.75 mi
7:10/mi
2:38:37
↑ 17↓ 861.7%
23M
7:43/mi
2:48:17
↑ 23↓ 630.6%
24M
7:33/mi
2:55:50
↓ 821.3%
40K· 24.85 mi
7:29/mi
3:02:14
↓ 200.3%
25.2M
7:56/mi
3:04:58
↑ 13↓ 160.2%
Finish· 26.22 mi
6:48/mi
3:11:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:12
Pace7:16 /mi
2nd Half
Distance13.11 mi
Time1:36:42
Pace7:23 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:39:1823:297:3423:29
7:34
-
10K
6.21 mi12:01:2245:337:2022:04
7:06
-0:28
15K
9.32 mi12:23:381:07:497:1722:16
7:10
+0:04
20K
12.43 mi12:46:001:30:117:1522:22
7:12
+0:02
Half
13.11 mi12:51:011:35:127:165:01
7:21
+0:09
25K
15.53 mi13:08:401:52:517:1617:39
7:17
-0:04
30K
18.64 mi13:31:252:15:367:1622:45
7:19
+0:02
20M
20.00 mi13:41:242:25:357:179:59
7:21
+0:02
21M
21.00 mi13:49:042:33:157:187:40
7:40
+0:19
35K
21.75 mi13:54:262:38:377:185:22
7:10
-0:30
23M
23.00 mi14:04:062:48:177:199:40
7:43
+0:33
24M
24.00 mi14:11:392:55:507:207:33
7:33
-0:10
40K
24.85 mi14:18:033:02:147:206:24
7:29
-0:04
25.2M
25.20 mi14:20:473:04:587:202:44
7:56
+0:27
Finish
26.22 mi14:27:433:11:547:196:56
6:48
-1:08

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

6:48 /mi

Average Pace

7:19 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:14:24

70% of race

Time at Steady Pace

57:30

30% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:19 /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 mi11:39:1823:297:3423:29
7:34
#12713
10K
6.21 mi12:01:2245:337:2022:04
7:06
#10590
15K
9.32 mi12:23:381:07:497:1722:16
7:10
#9998
20K
12.43 mi12:46:001:30:117:1522:22
7:12
#9461
Half
13.11 mi12:51:011:35:127:165:01
7:21
#9517
25K
15.53 mi13:08:401:52:517:1617:39
7:17
#9261
30K
18.64 mi13:31:252:15:367:1622:45
7:19
#8624
20M
20.00 mi13:41:242:25:357:179:59
7:21
#8373
21M
21.00 mi13:49:042:33:157:187:40
7:40
#8111
35K
21.75 mi13:54:262:38:377:185:22
7:10
#8007
23M
23.00 mi14:04:062:48:177:199:40
7:43
#7938
24M
24.00 mi14:11:392:55:507:207:33
7:33
#7924
40K
24.85 mi14:18:033:02:147:206:24
7:29
#7828
25.2M
25.20 mi14:20:473:04:587:202:44
7:56
#7758
Finish
26.22 mi14:27:433:11:547:196:56
6:48
#7588
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi12713950395038818(Top 31%)7443(Top 46%)7443(Top 132%)
10K6.21 mi3.10 mi10590+21238460+10438460+10438684(Top 31%)7406(Top 46%)7406(Top 131%)
15K9.32 mi3.11 mi9998+5928128+3328128+3328818(Top 31%)7443(Top 46%)7443(Top 132%)
20K12.43 mi3.11 mi9461+5377811+3177811+3178186(Top 29%)6979(Top 43%)6979(Top 124%)
Half13.11 mi0.68 mi9517-567836-257836-2510388(Top 37%)8201(Top 51%)8201(Top 145%)
25K15.53 mi2.42 mi9261+2567668+1687668+1688186(Top 29%)6868(Top 43%)6868(Top 122%)
30K18.64 mi3.11 mi8624+6377255+4137255+4136567(Top 23%)5688(Top 35%)5688(Top 101%)
20M20.00 mi1.36 mi8373+2517075+1807075+1806059(Top 21%)5240(Top 33%)5240(Top 93%)
21M21.00 mi1.00 mi8111+2626874+2016874+2015460(Top 19%)4706(Top 29%)4706(Top 83%)
35K21.75 mi0.75 mi8007+1046786+886786+886422(Top 23%)5336(Top 33%)5336(Top 95%)
23M23.00 mi1.25 mi7938+696698+886698+887999(Top 28%)6155(Top 38%)6155(Top 109%)
24M24.00 mi1.00 mi7924+146653+456653+458019(Top 28%)6114(Top 38%)6114(Top 108%)
40K24.85 mi0.85 mi7828+966565+886565+886695(Top 24%)5252(Top 33%)5252(Top 93%)
25.2M25.20 mi0.35 mi7758+706503+626503+625533(Top 19%)4451(Top 28%)4451(Top 79%)
Finish26.22 mi1.02 mi7588+1706367+1366367+1364513(Top 16%)3805(Top 24%)3805(Top 67%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21story building
+97ft-345ft

Overall

8818

Males

7443

M18-39

7443

5K→10K

3.1 - 6.2 mi

Top 31%
×5story building
+79ft-138ft

Overall

8684

Males

7406

M18-39

7406

10K→15K

6.2 - 9.3 mi

Top 31%
×3story building
+67ft-78ft

Overall

8818

Males

7443

M18-39

7443

15K→20K

9.3 - 12.4 mi

Top 29%
×5story building
+106ft-86ft

Overall

8186

Males

6979

M18-39

6979

20K→Half

12.4 - 13.1 mi

Top 37%
×2story building
+19ft-37ft

Overall

10388

Males

8201

M18-39

8201

Half→25K

13.1 - 15.5 mi

Top 29%
×4story building
+66ft-88ft

Overall

8186

Males

6868

M18-39

6868

25K→30K

15.5 - 18.6 mi

Top 23%
×9story building
+181ft-148ft

Overall

6567

Males

5688

M18-39

5688

30K→20M

18.6 - 20.0 mi

Top 21%
×5story building
+64ft-50ft

Overall

6059

Males

5240

M18-39

5240

20M→21M

20.0 - 21.0 mi

Top 19%
×8story building
+106ft-24ft

Overall

5460

Males

4706

M18-39

4706

21M→35K

21.0 - 21.8 mi

Top 23%
×7story building
+17ft-86ft

Overall

6422

Males

5336

M18-39

5336

35K→23M

21.8 - 23.0 mi

Top 28%
×5story building
+23ft-63ft

Overall

7999

Males

6155

M18-39

6155

23M→24M

23.0 - 24.0 mi

Top 28%
×6story building
+12ft-82ft

Overall

8019

Males

6114

M18-39

6114

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6695

Males

5252

M18-39

5252

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5533

Males

4451

M18-39

4451

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2story building
+22ft-21ft

Overall

4513

Males

3805

M18-39

3805

Passing Analysis

Category:
Athletes Passed
5446*
Passed By
321
Net Change
+5125
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12713
5K → 10K21274+2123#12713#10590
10K → 15K601*9+592#10590#9998
15K → 20K54710+537#9998#9461
20K → Half1268-56#9461#9517
Half → 25K29337+256#9517#9261
25K → 30K6469+637#9261#8624
30K → 20M2565+251#8624#8373
20M → 21M2664+262#8373#8111
21M → 35K11713+104#8111#8007
35K → 23M13768+69#8007#7938
23M → 24M7359+14#7938#7924
24M → 40K12024+96#7924#7828
40K → 25.2M744+70#7828#7758
25.2M → Finish1777+170#7758#7588
TOTALS5446*321+5125

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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