Boston Marathon logo
BOSTON MARATHON 2023

Ken Leslie

Bib: 20967•M

ON

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Top 34%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:38
Rank: #15802
Start → 5K
8:15/mi
25:38 split
10K· 6.21 mi
50:34
Rank: #15367 (+435)
5K → 10K
8:02/mi
24:56 split
15K· 9.32 mi
1:15:26
Rank: #15071 (+296)
10K → 15K
8:00/mi
24:52 split
20K· 12.43 mi
1:40:32
Rank: #14783 (+288)
15K → 20K
8:05/mi
25:06 split
Half· 13.11 mi
1:46:02
Rank: #14799 (-16)
20K → Half
8:04/mi
5:30 split
25K· 15.53 mi
2:05:55
Rank: #14684 (+115)
Half → 25K
8:12/mi
19:53 split
30K· 18.64 mi
2:32:15
Rank: #14574 (+110)
25K → 30K
8:29/mi
26:20 split
20M
2:44:03
Rank: #14571 (+3)
30K → 20M
8:41/mi
11:48 split
21M
2:53:27
Rank: #14620 (-49)
20M → 21M
9:24/mi
9:24 split
35K· 21.75 mi
3:00:17
Rank: #14767 (-147)
21M → 35K
9:08/mi
6:50 split
23M
3:11:47
Rank: #14914 (-147)
35K → 23M
9:11/mi
11:30 split
24M
3:21:27
Rank: #15160 (-246)
23M → 24M
9:40/mi
9:40 split
40K· 24.85 mi
3:29:32
Rank: #15326 (-166)
24M → 40K
9:27/mi
8:05 split
25.2M
3:33:00
Rank: #15358 (-32)
40K → 25.2M
10:03/mi
3:28 split
Finish· 26.22 mi
3:42:05
Rank: #15464 (-106)
25.2M → Finish
8:55/mi
9:05 split

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:02
Pace8:05 /mi
2nd Half
Distance13.11 mi
Time1:56:03
Pace8:51 /mi
📊Positive Split: 9.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:5025:388:1525:38
8:15
-
10K
6.21 mi11:50:4650:348:0824:56
8:02
-0:13
15K
9.32 mi12:15:381:15:268:0624:52
8:00
-0:02
20K
12.43 mi12:40:441:40:328:0525:06
8:05
+0:05
Half
13.11 mi12:46:141:46:028:055:30
8:04
-0:01
25K
15.53 mi13:06:072:05:558:0619:53
8:12
+0:08
30K
18.64 mi13:32:272:32:158:1026:20
8:29
+0:17
20M
20.00 mi13:44:152:44:038:1211:48
8:41
+0:12
21M
21.00 mi13:53:392:53:278:169:24
9:24
+0:43
35K
21.75 mi14:00:293:00:178:176:50
9:08
-0:16
23M
23.00 mi14:11:593:11:478:2011:30
9:11
+0:03
24M
24.00 mi14:21:393:21:278:249:40
9:40
+0:29
40K
24.85 mi14:29:443:29:328:268:05
9:27
-0:13
25.2M
25.20 mi14:33:123:33:008:273:28
10:03
+0:36
Finish
26.22 mi14:42:173:42:058:299:05
8:55
-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

8:00 /mi

Average Pace

8:29 /mi

Slowest Pace

10:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:55

57% of race

Time at Steady Pace

47:13

21% of race

Time at Slower Pace

48:57

22% of race

Average Pace: 8:28 /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 mi11:25:5025:388:1525:38
8:15
#15802
10K
6.21 mi11:50:4650:348:0824:56
8:02
#15367
15K
9.32 mi12:15:381:15:268:0624:52
8:00
#15071
20K
12.43 mi12:40:441:40:328:0525:06
8:05
#14783
Half
13.11 mi12:46:141:46:028:055:30
8:04
#14799
25K
15.53 mi13:06:072:05:558:0619:53
8:12
#14684
30K
18.64 mi13:32:272:32:158:1026:20
8:29
#14574
20M
20.00 mi13:44:152:44:038:1211:48
8:41
#14571
21M
21.00 mi13:53:392:53:278:169:24
9:24
#14620
35K
21.75 mi14:00:293:00:178:176:50
9:08
#14767
23M
23.00 mi14:11:593:11:478:2011:30
9:11
#14914
24M
24.00 mi14:21:393:21:278:249:40
9:40
#15160
40K
24.85 mi14:29:443:29:328:268:05
9:27
#15326
25.2M
25.20 mi14:33:123:33:008:273:28
10:03
#15358
Finish
26.22 mi14:42:173:42:058:299:05
8:55
#15464
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi15802106281062814410(Top 54%)10068(Top 66%)10068(Top 907%)
10K6.21 mi3.10 mi15367+43510464+16410464+16414981(Top 56%)10301(Top 68%)10301(Top 928%)
15K9.32 mi3.11 mi15071+29610344+12010344+12014410(Top 54%)10068(Top 66%)10068(Top 907%)
20K12.43 mi3.11 mi14783+28810218+12610218+12614083(Top 53%)9915(Top 65%)9915(Top 893%)
Half13.11 mi0.68 mi14799-1610225-710225-714809(Top 56%)10226(Top 67%)10226(Top 921%)
25K15.53 mi2.42 mi14684+11510150+7510150+7514234(Top 53%)9867(Top 65%)9867(Top 889%)
30K18.64 mi3.11 mi14574+11010071+7910071+7914150(Top 53%)9714(Top 64%)9714(Top 875%)
20M20.00 mi1.36 mi14571+310041+3010041+3014739(Top 55%)9874(Top 65%)9874(Top 890%)
21M21.00 mi1.00 mi14620-4910042-110042-115456(Top 58%)10115(Top 67%)10115(Top 911%)
35K21.75 mi0.75 mi14767-14710086-4410086-4418437(Top 69%)11338(Top 75%)11338(Top 1021%)
23M23.00 mi1.25 mi14914-14710115-2910115-2916956(Top 64%)10665(Top 70%)10665(Top 961%)
24M24.00 mi1.00 mi15160-24610188-7310188-7319756(Top 74%)11890(Top 78%)11890(Top 1071%)
40K24.85 mi0.85 mi15326-16610229-4110229-4118158(Top 68%)11104(Top 73%)11104(Top 1000%)
25.2M25.20 mi0.35 mi15358-3210228+110228+117538(Top 66%)10795(Top 71%)10795(Top 973%)
Finish26.22 mi1.02 mi15464-10610259-3110259-3117537(Top 66%)10837(Top 71%)10837(Top 976%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21stories
+97ft-345ft

Overall

14410

Males

10068

M60-64

10068

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

14981

Males

10301

M60-64

10301

10K→15K

6.2 - 9.3 mi

Top 54%
×3stories
+67ft-78ft

Overall

14410

Males

10068

M60-64

10068

15K→20K

9.3 - 12.4 mi

Top 53%
×5stories
+106ft-86ft

Overall

14083

Males

9915

M60-64

9915

20K→Half

12.4 - 13.1 mi

Top 56%
×2stories
+19ft-37ft

Overall

14809

Males

10226

M60-64

10226

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

14234

Males

9867

M60-64

9867

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

14150

Males

9714

M60-64

9714

30K→20M

18.6 - 20.0 mi

Top 55%
×5stories
+64ft-50ft

Overall

14739

Males

9874

M60-64

9874

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

15456

Males

10115

M60-64

10115

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

18437

Males

11338

M60-64

11338

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

16956

Males

10665

M60-64

10665

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

19756

Males

11890

M60-64

11890

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

18158

Males

11104

M60-64

11104

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

17538

Males

10795

M60-64

10795

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2stories
+22ft-21ft

Overall

17537

Males

10837

M60-64

10837

Passing Analysis

Category:
Athletes Passed
2051
Passed By
1713
Net Change
+338
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15802
5K → 10K578143+435#15802#15367
10K → 15K36468+296#15367#15071
15K → 20K34456+288#15071#14783
20K → Half2440-16#14783#14799
Half → 25K19277+115#14799#14684
25K → 30K214104+110#14684#14574
30K → 20M9693+3#14574#14571
20M → 21M63112-49#14571#14620
21M → 35K20167-147#14620#14767
35K → 23M43190-147#14767#14914
23M → 24M21267-246#14914#15160
24M → 40K27193-166#15160#15326
40K → 25.2M2153-32#15326#15358
25.2M → Finish44150-106#15358#15464
TOTALS20511713+338
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing