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BOSTON MARATHON 2023

John Kobert

Bib: 12989•M

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 43%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 47%
Division (M55-59)
#0 / 1422
Top 32%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
7:47/mi
24:11
↑ 97↓ 3451.5%
10K· 6.21 mi
7:47/mi
48:21
↑ 79↓ 1380.4%
15K· 9.32 mi
7:46/mi
1:12:28
↑ 67↓ 78
20K· 12.43 mi
7:47/mi
1:36:39
↑ 106↓ 860.1%
Half· 13.11 mi
7:49/mi
1:41:59
↑ 19↓ 370.5%
25K· 15.53 mi
7:59/mi
2:01:21
↑ 66↓ 880.2%
30K· 18.64 mi
7:58/mi
2:26:07
↑ 181↓ 1480.2%
20M
7:57/mi
2:36:55
↑ 64↓ 500.2%
21M
8:12/mi
2:45:07
↑ 106↓ 241.6%
35K· 21.75 mi
7:52/mi
2:51:00
↑ 17↓ 861.7%
23M
8:03/mi
3:01:05
↑ 23↓ 630.6%
24M
7:56/mi
3:09:01
↓ 821.3%
40K· 24.85 mi
8:19/mi
3:16:08
↓ 200.3%
25.2M
8:42/mi
3:19:08
↑ 13↓ 160.2%
Finish· 26.22 mi
8:03/mi
3:27:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:59
Pace7:47 /mi
2nd Half
Distance13.11 mi
Time1:45:21
Pace8:02 /mi
📊Positive Split: 3.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:5324:117:4724:11
7:47
-
10K
6.21 mi11:16:0348:217:4724:10
7:47
0:00
15K
9.32 mi11:40:101:12:287:4624:07
7:46
-0:01
20K
12.43 mi12:04:211:36:397:4724:11
7:47
+0:01
Half
13.11 mi12:09:411:41:597:475:20
7:49
+0:02
25K
15.53 mi12:29:032:01:217:4919:22
7:59
+0:10
30K
18.64 mi12:53:492:26:077:5024:46
7:58
-0:01
20M
20.00 mi13:04:372:36:557:5110:48
7:57
-0:01
21M
21.00 mi13:12:492:45:077:528:12
8:12
+0:15
35K
21.75 mi13:18:422:51:007:525:53
7:52
-0:20
23M
23.00 mi13:28:473:01:057:5210:05
8:03
+0:11
24M
24.00 mi13:36:433:09:017:537:56
7:56
-0:07
40K
24.85 mi13:43:503:16:087:537:07
8:19
+0:23
25.2M
25.20 mi13:46:503:19:087:543:00
8:42
+0:23
Finish
26.22 mi13:55:023:27:207:558:12
8:03
-0:39

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

7:46 /mi

Average Pace

7:55 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:24:20

99% of race

Time at Steady Pace

3:00

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:54 /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 mi10:51:5324:117:4724:11
7:47
#12189
10K
6.21 mi11:16:0348:217:4724:10
7:47
#12527
15K
9.32 mi11:40:101:12:287:4624:07
7:46
#12452
20K
12.43 mi12:04:211:36:397:4724:11
7:47
#12180
Half
13.11 mi12:09:411:41:597:475:20
7:49
#12225
25K
15.53 mi12:29:032:01:217:4919:22
7:59
#12278
30K
18.64 mi12:53:492:26:077:5024:46
7:58
#11918
20M
20.00 mi13:04:372:36:557:5110:48
7:57
#11758
21M
21.00 mi13:12:492:45:077:528:12
8:12
#11538
35K
21.75 mi13:18:422:51:007:525:53
7:52
#11503
23M
23.00 mi13:28:473:01:057:5210:05
8:03
#11417
24M
24.00 mi13:36:433:09:017:537:56
7:56
#11373
40K
24.85 mi13:43:503:16:087:537:07
8:19
#11404
25.2M
25.20 mi13:46:503:19:087:543:00
8:42
#11379
Finish
26.22 mi13:55:023:27:207:558:12
8:03
#11411
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi121899198919812388(Top 47%)9246(Top 61%)9246(Top 650%)
10K6.21 mi3.10 mi12527-3389336-1389336-13812921(Top 49%)9515(Top 63%)9515(Top 669%)
15K9.32 mi3.11 mi12452+759287+499287+4912388(Top 47%)9246(Top 61%)9246(Top 650%)
20K12.43 mi3.11 mi12180+2729139+1489139+14811589(Top 44%)8840(Top 58%)8840(Top 622%)
Half13.11 mi0.68 mi12225-459157-189157-1812798(Top 48%)9391(Top 62%)9391(Top 660%)
25K15.53 mi2.42 mi12278-539159-29159-212619(Top 47%)9169(Top 60%)9169(Top 645%)
30K18.64 mi3.11 mi11918+3608966+1938966+19310653(Top 40%)8172(Top 54%)8172(Top 575%)
20M20.00 mi1.36 mi11758+1608885+818885+819890(Top 37%)7701(Top 51%)7701(Top 542%)
21M21.00 mi1.00 mi11538+2208768+1178768+1178622(Top 32%)6858(Top 45%)6858(Top 482%)
35K21.75 mi0.75 mi11503+358737+318737+3111085(Top 42%)8154(Top 54%)8154(Top 573%)
23M23.00 mi1.25 mi11417+868675+628675+6210126(Top 38%)7557(Top 50%)7557(Top 531%)
24M24.00 mi1.00 mi11373+448637+388637+3810762(Top 40%)7785(Top 51%)7785(Top 547%)
40K24.85 mi0.85 mi11404-318628+98628+912184(Top 46%)8394(Top 55%)8394(Top 590%)
25.2M25.20 mi0.35 mi11379+258603+258603+2510712(Top 40%)7669(Top 51%)7669(Top 539%)
Finish26.22 mi1.02 mi11411-328594+98594+912414(Top 47%)8482(Top 56%)8482(Top 596%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

12388

Males

9246

M55-59

9246

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

12921

Males

9515

M55-59

9515

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

12388

Males

9246

M55-59

9246

15K→20K

9.3 - 12.4 mi

Top 44%
×5story building
+106ft-86ft

Overall

11589

Males

8840

M55-59

8840

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

12798

Males

9391

M55-59

9391

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

12619

Males

9169

M55-59

9169

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

10653

Males

8172

M55-59

8172

30K→20M

18.6 - 20.0 mi

Top 37%
×5story building
+64ft-50ft

Overall

9890

Males

7701

M55-59

7701

20M→21M

20.0 - 21.0 mi

Top 32%
×8story building
+106ft-24ft

Overall

8622

Males

6858

M55-59

6858

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11085

Males

8154

M55-59

8154

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

10126

Males

7557

M55-59

7557

23M→24M

23.0 - 24.0 mi

Top 40%
×6story building
+12ft-82ft

Overall

10762

Males

7785

M55-59

7785

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12184

Males

8394

M55-59

8394

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10712

Males

7669

M55-59

7669

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

12414

Males

8482

M55-59

8482

Passing Analysis

Category:
Athletes Passed
2115
Passed By
1337
Net Change
+778
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12189
5K → 10K173511-338#12189#12527
10K → 15K234159+75#12527#12452
15K → 20K32553+272#12452#12180
20K → Half1762-45#12180#12225
Half → 25K98151-53#12225#12278
25K → 30K40949+360#12278#11918
30K → 20M18424+160#11918#11758
20M → 21M2266+220#11758#11538
21M → 35K6732+35#11538#11503
35K → 23M13549+86#11503#11417
23M → 24M8137+44#11417#11373
24M → 40K5586-31#11373#11404
40K → 25.2M4621+25#11404#11379
25.2M → Finish6597-32#11379#11411
TOTALS21151337+778
📊

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