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BOSTON MARATHON 2023

Johnny Kolh

Bib: 12501•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 33%
Gender (Male)
#0 / 15176
Top 48%
Masters (Masters Men)
#0 / 9891
Top 36%
Division (M45-49)
#0 / 2252
Top 50%
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
7:30/mi
23:17
↑ 97↓ 3451.5%
10K· 6.21 mi
7:25/mi
46:18
↑ 79↓ 1380.4%
15K· 9.32 mi
7:27/mi
1:09:28
↑ 67↓ 78
20K· 12.43 mi
7:32/mi
1:32:52
↑ 106↓ 860.1%
Half· 13.11 mi
7:29/mi
1:37:58
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:56:02
↑ 66↓ 880.2%
30K· 18.64 mi
7:43/mi
2:20:01
↑ 181↓ 1480.2%
20M
7:46/mi
2:30:34
↑ 64↓ 500.2%
21M
8:02/mi
2:38:36
↑ 106↓ 241.6%
35K· 21.75 mi
7:30/mi
2:44:13
↑ 17↓ 861.7%
23M
7:52/mi
2:54:04
↑ 23↓ 630.6%
24M
7:40/mi
3:01:44
↓ 821.3%
40K· 24.85 mi
7:48/mi
3:08:24
↓ 200.3%
25.2M
8:19/mi
3:11:16
↑ 13↓ 160.2%
Finish· 26.22 mi
7:31/mi
3:18:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:58
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time1:40:58
Pace7:42 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0923:177:3023:17
7:30
-
10K
6.21 mi11:14:1046:187:2723:01
7:25
-0:05
15K
9.32 mi11:37:201:09:287:2723:10
7:27
+0:02
20K
12.43 mi12:00:441:32:527:2823:24
7:32
+0:05
Half
13.11 mi12:05:501:37:587:285:06
7:29
-0:03
25K
15.53 mi12:23:541:56:027:2818:04
7:27
-0:02
30K
18.64 mi12:47:532:20:017:3123:59
7:43
+0:16
20M
20.00 mi12:58:262:30:347:3210:33
7:46
+0:03
21M
21.00 mi13:06:282:38:367:338:02
8:02
+0:16
35K
21.75 mi13:12:052:44:137:335:37
7:30
-0:32
23M
23.00 mi13:21:562:54:047:349:51
7:52
+0:22
24M
24.00 mi13:29:363:01:447:347:40
7:40
-0:12
40K
24.85 mi13:36:163:08:247:356:40
7:48
+0:08
25.2M
25.20 mi13:39:083:11:167:352:52
8:19
+0:31
Finish
26.22 mi13:46:483:18:567:367:40
7:31
-0:48

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

7:25 /mi

Average Pace

7:36 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:16:04

99% of race

Time at Steady Pace

2:52

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:35 /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 mi10:51:0923:177:3023:17
7:30
#9562
10K
6.21 mi11:14:1046:187:2723:01
7:25
#9582
15K
9.32 mi11:37:201:09:287:2723:10
7:27
#9634
20K
12.43 mi12:00:441:32:527:2823:24
7:32
#9586
Half
13.11 mi12:05:501:37:587:285:06
7:29
#9607
25K
15.53 mi12:23:541:56:027:2818:04
7:27
#9388
30K
18.64 mi12:47:532:20:017:3123:59
7:43
#9238
20M
20.00 mi12:58:262:30:347:3210:33
7:46
#9177
21M
21.00 mi13:06:282:38:367:338:02
8:02
#9046
35K
21.75 mi13:12:052:44:137:335:37
7:30
#9017
23M
23.00 mi13:21:562:54:047:349:51
7:52
#8980
24M
24.00 mi13:29:363:01:447:347:40
7:40
#8961
40K
24.85 mi13:36:163:08:247:356:40
7:48
#8924
25.2M
25.20 mi13:39:083:11:167:352:52
8:19
#8893
Finish
26.22 mi13:46:483:18:567:367:40
7:31
#8861
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi9562790479049808(Top 37%)8037(Top 53%)8037(Top 357%)
10K6.21 mi3.10 mi9582-207923-197923-199682(Top 36%)7978(Top 53%)7978(Top 354%)
15K9.32 mi3.11 mi9634-527945-227945-229808(Top 37%)8037(Top 53%)8037(Top 357%)
20K12.43 mi3.11 mi9586+487910+357910+359544(Top 36%)7821(Top 52%)7821(Top 347%)
Half13.11 mi0.68 mi9607-217927-177927-179952(Top 37%)8062(Top 53%)8062(Top 358%)
25K15.53 mi2.42 mi9388+2197772+1557772+1558418(Top 32%)7079(Top 47%)7079(Top 314%)
30K18.64 mi3.11 mi9238+1507651+1217651+1218779(Top 33%)7148(Top 47%)7148(Top 317%)
20M20.00 mi1.36 mi9177+617591+607591+608567(Top 32%)6934(Top 46%)6934(Top 308%)
21M21.00 mi1.00 mi9046+1317488+1037488+1037549(Top 28%)6217(Top 41%)6217(Top 276%)
35K21.75 mi0.75 mi9017+297457+317457+318573(Top 32%)6847(Top 45%)6847(Top 304%)
23M23.00 mi1.25 mi8980+377407+507407+508841(Top 33%)6884(Top 45%)6884(Top 306%)
24M24.00 mi1.00 mi8961+197368+397368+398831(Top 33%)6800(Top 45%)6800(Top 302%)
40K24.85 mi0.85 mi8924+377328+407328+408645(Top 32%)6629(Top 44%)6629(Top 294%)
25.2M25.20 mi0.35 mi8893+317300+287300+288344(Top 31%)6376(Top 42%)6376(Top 283%)
Finish26.22 mi1.02 mi8861+327267+337267+338704(Top 33%)6582(Top 43%)6582(Top 292%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21story building
+97ft-345ft

Overall

9808

Males

8037

M45-49

8037

5K→10K

3.1 - 6.2 mi

Top 36%
×5story building
+79ft-138ft

Overall

9682

Males

7978

M45-49

7978

10K→15K

6.2 - 9.3 mi

Top 37%
×3story building
+67ft-78ft

Overall

9808

Males

8037

M45-49

8037

15K→20K

9.3 - 12.4 mi

Top 36%
×5story building
+106ft-86ft

Overall

9544

Males

7821

M45-49

7821

20K→Half

12.4 - 13.1 mi

Top 37%
×2story building
+19ft-37ft

Overall

9952

Males

8062

M45-49

8062

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

8418

Males

7079

M45-49

7079

25K→30K

15.5 - 18.6 mi

Top 33%
×9story building
+181ft-148ft

Overall

8779

Males

7148

M45-49

7148

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

8567

Males

6934

M45-49

6934

20M→21M

20.0 - 21.0 mi

Top 28%
×8story building
+106ft-24ft

Overall

7549

Males

6217

M45-49

6217

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

8573

Males

6847

M45-49

6847

35K→23M

21.8 - 23.0 mi

Top 33%
×5story building
+23ft-63ft

Overall

8841

Males

6884

M45-49

6884

23M→24M

23.0 - 24.0 mi

Top 33%
×6story building
+12ft-82ft

Overall

8831

Males

6800

M45-49

6800

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8645

Males

6629

M45-49

6629

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8344

Males

6376

M45-49

6376

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

8704

Males

6582

M45-49

6582

Passing Analysis

Category:
Athletes Passed
1769*
Passed By
1068
Net Change
+701
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9562
5K → 10K285305-20#9562#9582
10K → 15K144196-52#9582#9634
15K → 20K166118+48#9634#9586
20K → Half1940-21#9586#9607
Half → 25K24223+219#9607#9388
25K → 30K240*90+150#9388#9238
30K → 20M10847+61#9238#9177
20M → 21M15120+131#9177#9046
21M → 35K5829+29#9046#9017
35K → 23M9356+37#9017#8980
23M → 24M8061+19#8980#8961
24M → 40K6831+37#8961#8924
40K → 25.2M387+31#8924#8893
25.2M → Finish7745+32#8893#8861
TOTALS1769*1068+701

* 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