Boston Marathon logo
BOSTON MARATHON 2023

Kevin Leonard

Bib: 29839•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:23
Rank: #17496
Start → 5K
8:30/mi
26:23 split
10K· 6.21 mi
51:54
Rank: #16876 (+620)
5K → 10K
8:13/mi
25:31 split
15K· 9.32 mi
1:19:32
Rank: #18063 (-1187)
10K → 15K
8:54/mi
27:38 split
20K· 12.43 mi
1:46:08
Rank: #17827 (+236)
15K → 20K
8:34/mi
26:36 split
Half· 13.11 mi
1:52:06
Rank: #17897 (-70)
20K → Half
8:45/mi
5:58 split
25K· 15.53 mi
2:14:35
Rank: #18359 (-462)
Half → 25K
9:16/mi
22:29 split
30K· 18.64 mi
2:45:36
Rank: #19022 (-663)
25K → 30K
9:59/mi
31:01 split
20M
2:59:07
Rank: #19146 (-124)
30K → 20M
9:57/mi
13:31 split
21M
3:09:29
Rank: #19156 (-10)
20M → 21M
10:22/mi
10:22 split
35K· 21.75 mi
3:16:45
Rank: #19230 (-74)
21M → 35K
9:43/mi
7:16 split
23M
3:28:51
Rank: #19206 (+24)
35K → 23M
9:40/mi
12:06 split
24M
3:38:11
Rank: #19182 (+24)
23M → 24M
9:20/mi
9:20 split
40K· 24.85 mi
3:45:50
Rank: #19069 (+113)
24M → 40K
8:57/mi
7:39 split
25.2M
3:49:00
Rank: #18994 (+75)
40K → 25.2M
9:11/mi
3:10 split
Finish· 26.22 mi
3:57:23
Rank: #18838 (+156)
25.2M → Finish
8:14/mi
8:23 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
Time1:52:06
Pace8:33 /mi
2nd Half
Distance13.11 mi
Time2:05:17
Pace9:33 /mi
📊Positive Split: 11.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:0626:238:3026:23
8:30
-
10K
6.21 mi12:09:3751:548:2125:31
8:13
-0:17
15K
9.32 mi12:37:151:19:328:3227:38
8:54
+0:41
20K
12.43 mi13:03:511:46:088:3226:36
8:34
-0:20
Half
13.11 mi13:09:491:52:068:335:58
8:45
+0:11
25K
15.53 mi13:32:182:14:358:4022:29
9:16
+0:31
30K
18.64 mi14:03:192:45:368:5331:01
9:59
+0:43
20M
20.00 mi14:16:502:59:078:5713:31
9:57
-0:02
21M
21.00 mi14:27:123:09:299:0110:22
10:22
+0:25
35K
21.75 mi14:34:283:16:459:037:16
9:43
-0:39
23M
23.00 mi14:46:343:28:519:0512:06
9:40
-0:03
24M
24.00 mi14:55:543:38:119:059:20
9:20
-0:20
40K
24.85 mi15:03:333:45:509:057:39
8:57
-0:23
25.2M
25.20 mi15:06:433:49:009:053:10
9:11
+0:14
Finish
26.22 mi15:15:063:57:239:048:23
8:14
-0:57

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

8:13 /mi

Average Pace

9:04 /mi

Slowest Pace

10:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:51

39% of race

Time at Steady Pace

1:10:16

30% of race

Time at Slower Pace

1:14:16

31% of race

Average Pace: 9:03 /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 mi11:44:0626:238:3026:23
8:30
#17496
10K
6.21 mi12:09:3751:548:2125:31
8:13
#16876
15K
9.32 mi12:37:151:19:328:3227:38
8:54
#18063
20K
12.43 mi13:03:511:46:088:3226:36
8:34
#17827
Half
13.11 mi13:09:491:52:068:335:58
8:45
#17897
25K
15.53 mi13:32:182:14:358:4022:29
9:16
#18359
30K
18.64 mi14:03:192:45:368:5331:01
9:59
#19022
20M
20.00 mi14:16:502:59:078:5713:31
9:57
#19146
21M
21.00 mi14:27:123:09:299:0110:22
10:22
#19156
35K
21.75 mi14:34:283:16:459:037:16
9:43
#19230
23M
23.00 mi14:46:343:28:519:0512:06
9:40
#19206
24M
24.00 mi14:55:543:38:119:059:20
9:20
#19182
40K
24.85 mi15:03:333:45:509:057:39
8:57
#19069
25.2M
25.20 mi15:06:433:49:009:053:10
9:11
#18994
Finish
26.22 mi15:15:063:57:239:048:23
8:14
#18838
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi17496112271122720011(Top 75%)12297(Top 81%)12297(Top 233%)
10K6.21 mi3.10 mi16876+62011029+19811029+19816345(Top 61%)10850(Top 71%)10850(Top 205%)
15K9.32 mi3.11 mi18063-118711478-44911478-44920011(Top 75%)12297(Top 81%)12297(Top 233%)
20K12.43 mi3.11 mi17827+23611387+9111387+9117242(Top 65%)11156(Top 74%)11156(Top 211%)
Half13.11 mi0.68 mi17897-7011416-2911416-2919160(Top 72%)11957(Top 79%)11957(Top 226%)
25K15.53 mi2.42 mi18359-46211596-18011596-18020093(Top 75%)12324(Top 81%)12324(Top 233%)
30K18.64 mi3.11 mi19022-66311851-25511851-25520988(Top 79%)12629(Top 83%)12629(Top 239%)
20M20.00 mi1.36 mi19146-12411886-3511886-3520321(Top 76%)12258(Top 81%)12258(Top 232%)
21M21.00 mi1.00 mi19156-1011881+511881+519182(Top 72%)11710(Top 77%)11710(Top 222%)
35K21.75 mi0.75 mi19230-7411905-2411905-2420497(Top 77%)12253(Top 81%)12253(Top 232%)
23M23.00 mi1.25 mi19206+2411888+1711888+1718940(Top 71%)11548(Top 76%)11548(Top 219%)
24M24.00 mi1.00 mi19182+2411867+2111867+2118589(Top 70%)11350(Top 75%)11350(Top 215%)
40K24.85 mi0.85 mi19069+11311807+6011807+6015852(Top 60%)10073(Top 66%)10073(Top 191%)
25.2M25.20 mi0.35 mi18994+7511774+3311774+3313546(Top 51%)9039(Top 60%)9039(Top 171%)
Finish26.22 mi1.02 mi18838+15611697+7711697+7713614(Top 51%)9073(Top 60%)9073(Top 172%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

20011

Males

12297

M18-39

12297

5K→10K

3.1 - 6.2 mi

Top 61%
×5story building
+79ft-138ft

Overall

16345

Males

10850

M18-39

10850

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

20011

Males

12297

M18-39

12297

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

17242

Males

11156

M18-39

11156

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

19160

Males

11957

M18-39

11957

Half→25K

13.1 - 15.5 mi

Top 75%
×4story building
+66ft-88ft

Overall

20093

Males

12324

M18-39

12324

25K→30K

15.5 - 18.6 mi

Top 79%
×9story building
+181ft-148ft

Overall

20988

Males

12629

M18-39

12629

30K→20M

18.6 - 20.0 mi

Top 76%
×5story building
+64ft-50ft

Overall

20321

Males

12258

M18-39

12258

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

19182

Males

11710

M18-39

11710

21M→35K

21.0 - 21.8 mi

Top 77%
×7story building
+17ft-86ft

Overall

20497

Males

12253

M18-39

12253

35K→23M

21.8 - 23.0 mi

Top 71%
×5story building
+23ft-63ft

Overall

18940

Males

11548

M18-39

11548

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

18589

Males

11350

M18-39

11350

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

15852

Males

10073

M18-39

10073

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13546

Males

9039

M18-39

9039

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2story building
+22ft-21ft

Overall

13614

Males

9073

M18-39

9073

Passing Analysis

Category:
Athletes Passed
1823
Passed By
3165
Net Change
-1342
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17496
5K → 10K742122+620#17496#16876
10K → 15K271214-1187#16876#18063
15K → 20K30872+236#18063#17827
20K → Half1080-70#17827#17897
Half → 25K38500-462#17897#18359
25K → 30K49712-663#18359#19022
30K → 20M53177-124#19022#19146
20M → 21M7383-10#19146#19156
21M → 35K2296-74#19156#19230
35K → 23M8056+24#19230#19206
23M → 24M6541+24#19206#19182
24M → 40K1229+113#19182#19069
40K → 25.2M761+75#19069#18994
25.2M → Finish1582+156#18994#18838
TOTALS18233165-1342
📊

Passing Visuals

Category:
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