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BOSTON MARATHON 2023

Keith Leeson

Bib: 17910•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 33%
Gender (Male)
#0 / 15176
Top 47%
Masters (Masters Men)
#0 / 9891
Top 36%
Division (M55-59)
#0 / 1422
Top 17%
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
7:37/mi
23:39
↑ 97↓ 3451.5%
10K· 6.21 mi
7:34/mi
47:09
↑ 79↓ 1380.4%
15K· 9.32 mi
7:29/mi
1:10:25
↑ 67↓ 78
20K· 12.43 mi
7:29/mi
1:33:41
↑ 106↓ 860.1%
Half· 13.11 mi
7:30/mi
1:38:48
↑ 19↓ 370.5%
25K· 15.53 mi
7:32/mi
1:57:03
↑ 66↓ 880.2%
30K· 18.64 mi
7:35/mi
2:20:37
↑ 181↓ 1480.2%
20M
7:38/mi
2:30:59
↑ 64↓ 500.2%
21M
8:09/mi
2:39:08
↑ 106↓ 241.6%
35K· 21.75 mi
7:18/mi
2:44:36
↑ 17↓ 861.7%
23M
7:44/mi
2:54:17
↑ 23↓ 630.6%
24M
7:26/mi
3:01:43
↓ 821.3%
40K· 24.85 mi
7:30/mi
3:08:08
↓ 200.3%
25.2M
7:56/mi
3:10:52
↑ 13↓ 160.2%
Finish· 26.22 mi
7:36/mi
3:18:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:48
Pace7:32 /mi
2nd Half
Distance13.11 mi
Time1:39:49
Pace7:37 /mi
📊Positive Split: 1.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:2123:397:3723:39
7:37
-
10K
6.21 mi11:40:5147:097:3523:30
7:34
-0:03
15K
9.32 mi12:04:071:10:257:3323:16
7:29
-0:05
20K
12.43 mi12:27:231:33:417:3223:16
7:29
0:00
Half
13.11 mi12:32:301:38:487:325:07
7:30
+0:01
25K
15.53 mi12:50:451:57:037:3218:15
7:32
+0:02
30K
18.64 mi13:14:192:20:377:3323:34
7:35
+0:03
20M
20.00 mi13:24:412:30:597:3310:22
7:38
+0:03
21M
21.00 mi13:32:502:39:087:358:09
8:09
+0:31
35K
21.75 mi13:38:182:44:367:345:28
7:18
-0:51
23M
23.00 mi13:47:592:54:177:359:41
7:44
+0:26
24M
24.00 mi13:55:253:01:437:347:26
7:26
-0:18
40K
24.85 mi14:01:503:08:087:346:25
7:30
+0:04
25.2M
25.20 mi14:04:343:10:527:342:44
7:56
+0:26
Finish
26.22 mi14:12:193:18:377:357:45
7:36
-0:20

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

7:18 /mi

Average Pace

7:35 /mi

Slowest Pace

8:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:10:28

96% of race

Time at Steady Pace

8:09

4% 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 mi11:17:2123:397:3723:39
7:37
#10629
10K
6.21 mi11:40:5147:097:3523:30
7:34
#10804
15K
9.32 mi12:04:071:10:257:3323:16
7:29
#10539
20K
12.43 mi12:27:231:33:417:3223:16
7:29
#10171
Half
13.11 mi12:32:301:38:487:325:07
7:30
#10158
25K
15.53 mi12:50:451:57:037:3218:15
7:32
#9924
30K
18.64 mi13:14:192:20:377:3323:34
7:35
#9520
20M
20.00 mi13:24:412:30:597:3310:22
7:38
#9350
21M
21.00 mi13:32:502:39:087:358:09
8:09
#9245
35K
21.75 mi13:38:182:44:367:345:28
7:18
#9143
23M
23.00 mi13:47:592:54:177:359:41
7:44
#9055
24M
24.00 mi13:55:253:01:437:347:26
7:26
#8954
40K
24.85 mi14:01:503:08:087:346:25
7:30
#8857
25.2M
25.20 mi14:04:343:10:527:342:44
7:56
#8778
Finish
26.22 mi14:12:193:18:377:357:45
7:36
#8772
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi106298462846210070(Top 38%)8179(Top 54%)8179(Top 575%)
10K6.21 mi3.10 mi10804-1758561-998561-9910964(Top 41%)8653(Top 57%)8653(Top 609%)
15K9.32 mi3.11 mi10539+2658440+1218440+12110070(Top 38%)8179(Top 54%)8179(Top 575%)
20K12.43 mi3.11 mi10171+3688245+1958245+1959214(Top 35%)7634(Top 50%)7634(Top 537%)
Half13.11 mi0.68 mi10158+138229+168229+1610154(Top 38%)8166(Top 54%)8166(Top 574%)
25K15.53 mi2.42 mi9924+2348091+1388091+1388961(Top 34%)7408(Top 49%)7408(Top 521%)
30K18.64 mi3.11 mi9520+4047815+2767815+2767838(Top 29%)6594(Top 43%)6594(Top 464%)
20M20.00 mi1.36 mi9350+1707683+1327683+1327683(Top 29%)6399(Top 42%)6399(Top 450%)
21M21.00 mi1.00 mi9245+1057600+837600+838289(Top 31%)6641(Top 44%)6641(Top 467%)
35K21.75 mi0.75 mi9143+1027523+777523+777179(Top 27%)6019(Top 40%)6019(Top 423%)
23M23.00 mi1.25 mi9055+887453+707453+707950(Top 30%)6385(Top 42%)6385(Top 449%)
24M24.00 mi1.00 mi8954+1017364+897364+897265(Top 27%)5878(Top 39%)5878(Top 413%)
40K24.85 mi0.85 mi8857+977282+827282+826764(Top 25%)5501(Top 36%)5501(Top 387%)
25.2M25.20 mi0.35 mi8778+797227+557227+556090(Top 23%)5021(Top 33%)5021(Top 353%)
Finish26.22 mi1.02 mi8772+67206+217206+219286(Top 35%)6906(Top 46%)6906(Top 486%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10070

Males

8179

M55-59

8179

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

10964

Males

8653

M55-59

8653

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10070

Males

8179

M55-59

8179

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

9214

Males

7634

M55-59

7634

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10154

Males

8166

M55-59

8166

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

8961

Males

7408

M55-59

7408

25K→30K

15.5 - 18.6 mi

Top 29%
×9story building
+181ft-148ft

Overall

7838

Males

6594

M55-59

6594

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

7683

Males

6399

M55-59

6399

20M→21M

20.0 - 21.0 mi

Top 31%
×8story building
+106ft-24ft

Overall

8289

Males

6641

M55-59

6641

21M→35K

21.0 - 21.8 mi

Top 27%
×7story building
+17ft-86ft

Overall

7179

Males

6019

M55-59

6019

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

7950

Males

6385

M55-59

6385

23M→24M

23.0 - 24.0 mi

Top 27%
×6story building
+12ft-82ft

Overall

7265

Males

5878

M55-59

5878

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6764

Males

5501

M55-59

5501

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6090

Males

5021

M55-59

5021

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2story building
+22ft-21ft

Overall

9286

Males

6906

M55-59

6906

Passing Analysis

Category:
Athletes Passed
2595*
Passed By
738
Net Change
+1857
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10629
5K → 10K216391-175#10629#10804
10K → 15K34782+265#10804#10539
15K → 20K383*15+368#10539#10171
20K → Half4027+13#10171#10158
Half → 25K265*31+234#10158#9924
25K → 30K420*16+404#9924#9520
30K → 20M18313+170#9520#9350
20M → 21M14035+105#9350#9245
21M → 35K1064+102#9245#9143
35K → 23M12638+88#9143#9055
23M → 24M12827+101#9055#8954
24M → 40K1047+97#8954#8857
40K → 25.2M812+79#8857#8778
25.2M → Finish5650+6#8778#8772
TOTALS2595*738+1857

* 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