Boston Marathon logo
BOSTON MARATHON 2023

Guy Leclerc

Bib: 13444•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 (M50-54)
#0 / 2052
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
8:06/mi
25:11
↑ 97↓ 3451.5%
10K· 6.21 mi
7:52/mi
49:38
↑ 79↓ 1380.4%
15K· 9.32 mi
7:56/mi
1:14:17
↑ 67↓ 78
20K· 12.43 mi
8:09/mi
1:39:35
↑ 106↓ 860.1%
Half· 13.11 mi
7:55/mi
1:44:59
↑ 19↓ 370.5%
25K· 15.53 mi
8:09/mi
2:04:45
↑ 66↓ 880.2%
30K· 18.64 mi
8:21/mi
2:30:42
↑ 181↓ 1480.2%
20M
8:31/mi
2:42:16
↑ 64↓ 500.2%
21M
9:05/mi
2:51:21
↑ 106↓ 241.6%
35K· 21.75 mi
9:21/mi
2:58:21
↑ 17↓ 861.7%
23M
8:55/mi
3:09:31
↑ 23↓ 630.6%
24M
8:35/mi
3:18:06
↓ 821.3%
40K· 24.85 mi
9:56/mi
3:26:36
↓ 200.3%
25.2M
10:09/mi
3:30:06
↑ 13↓ 160.2%
Finish· 26.22 mi
8:30/mi
3:38:46
↑ 22↓ 21

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
Time1:44:59
Pace8:00 /mi
2nd Half
Distance13.11 mi
Time1:53:47
Pace8:41 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:4725:118:0625:11
8:06
-
10K
6.21 mi11:18:1449:387:5924:27
7:52
-0:14
15K
9.32 mi11:42:531:14:177:5824:39
7:56
+0:04
20K
12.43 mi12:08:111:39:358:0125:18
8:09
+0:13
Half
13.11 mi12:13:351:44:598:005:24
7:55
-0:14
25K
15.53 mi12:33:212:04:458:0219:46
8:09
+0:14
30K
18.64 mi12:59:182:30:428:0525:57
8:21
+0:12
20M
20.00 mi13:10:522:42:168:0711:34
8:31
+0:10
21M
21.00 mi13:19:572:51:218:109:05
9:05
+0:34
35K
21.75 mi13:26:572:58:218:127:00
9:21
+0:16
23M
23.00 mi13:38:073:09:318:1411:10
8:55
-0:26
24M
24.00 mi13:46:423:18:068:158:35
8:35
-0:20
40K
24.85 mi13:55:123:26:368:198:30
9:56
+1:21
25.2M
25.20 mi13:58:423:30:068:203:30
10:09
+0:13
Finish
26.22 mi14:07:223:38:468:218:40
8:30
-1:39

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

7:52 /mi

Average Pace

8:21 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:45

57% of race

Time at Steady Pace

54:46

25% of race

Time at Slower Pace

39:15

18% of race

Average Pace: 8:21 /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 mi10:53:4725:118:0625:11
8:06
#14743
10K
6.21 mi11:18:1449:387:5924:27
7:52
#14290
15K
9.32 mi11:42:531:14:177:5824:39
7:56
#14136
20K
12.43 mi12:08:111:39:358:0125:18
8:09
#14193
Half
13.11 mi12:13:351:44:598:005:24
7:55
#14174
25K
15.53 mi12:33:212:04:458:0219:46
8:09
#14103
30K
18.64 mi12:59:182:30:428:0525:57
8:21
#13973
20M
20.00 mi13:10:522:42:168:0711:34
8:31
#13936
21M
21.00 mi13:19:572:51:218:109:05
9:05
#13911
35K
21.75 mi13:26:572:58:218:127:00
9:21
#14179
23M
23.00 mi13:38:073:09:318:1411:10
8:55
#14247
24M
24.00 mi13:46:423:18:068:158:35
8:35
#14280
40K
24.85 mi13:55:123:26:368:198:30
9:56
#14543
25.2M
25.20 mi13:58:423:30:068:203:30
10:09
#14611
Finish
26.22 mi14:07:223:38:468:218:40
8:30
#14627
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi14743102421024213845(Top 52%)9838(Top 65%)9838(Top 479%)
10K6.21 mi3.10 mi14290+45310049+19310049+19313714(Top 52%)9829(Top 65%)9829(Top 479%)
15K9.32 mi3.11 mi14136+1549974+759974+7513845(Top 52%)9838(Top 65%)9838(Top 479%)
20K12.43 mi3.11 mi14193-579975-19975-114539(Top 55%)10096(Top 67%)10096(Top 492%)
Half13.11 mi0.68 mi14174+199972+39972+313662(Top 51%)9772(Top 64%)9772(Top 476%)
25K15.53 mi2.42 mi14103+719912+609912+6013884(Top 52%)9722(Top 64%)9722(Top 474%)
30K18.64 mi3.11 mi13973+1309833+799833+7913354(Top 50%)9393(Top 62%)9393(Top 458%)
20M20.00 mi1.36 mi13936+379800+339800+3313694(Top 51%)9446(Top 62%)9446(Top 460%)
21M21.00 mi1.00 mi13911+259772+289772+2813866(Top 52%)9429(Top 62%)9429(Top 460%)
35K21.75 mi0.75 mi14179-2689843-719843-7119342(Top 73%)11743(Top 77%)11743(Top 572%)
23M23.00 mi1.25 mi14247-689850-79850-715615(Top 59%)10073(Top 66%)10073(Top 491%)
24M24.00 mi1.00 mi14280-339842+89842+814945(Top 56%)9723(Top 64%)9723(Top 474%)
40K24.85 mi0.85 mi14543-2639924-829924-8219793(Top 74%)11823(Top 78%)11823(Top 576%)
25.2M25.20 mi0.35 mi14611-689937-139937-1317892(Top 67%)10951(Top 72%)10951(Top 534%)
Finish26.22 mi1.02 mi14627-169929+89929+815433(Top 58%)9918(Top 65%)9918(Top 483%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21story building
+97ft-345ft

Overall

13845

Males

9838

M50-54

9838

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

13714

Males

9829

M50-54

9829

10K→15K

6.2 - 9.3 mi

Top 52%
×3story building
+67ft-78ft

Overall

13845

Males

9838

M50-54

9838

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

14539

Males

10096

M50-54

10096

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

13662

Males

9772

M50-54

9772

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

13884

Males

9722

M50-54

9722

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

13354

Males

9393

M50-54

9393

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

13694

Males

9446

M50-54

9446

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

13866

Males

9429

M50-54

9429

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

19342

Males

11743

M50-54

11743

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

15615

Males

10073

M50-54

10073

23M→24M

23.0 - 24.0 mi

Top 56%
×6story building
+12ft-82ft

Overall

14945

Males

9723

M50-54

9723

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

19793

Males

11823

M50-54

11823

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

17892

Males

10951

M50-54

10951

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2story building
+22ft-21ft

Overall

15433

Males

9918

M50-54

9918

Passing Analysis

Category:
Athletes Passed
1908
Passed By
1792
Net Change
+116
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14743
5K → 10K577124+453#14743#14290
10K → 15K269115+154#14290#14136
15K → 20K150207-57#14136#14193
20K → Half3819+19#14193#14174
Half → 25K182111+71#14174#14103
25K → 30K257127+130#14103#13973
30K → 20M11578+37#13973#13936
20M → 21M10378+25#13936#13911
21M → 35K7275-268#13911#14179
35K → 23M69137-68#14179#14247
23M → 24M6194-33#14247#14280
24M → 40K14277-263#14280#14543
40K → 25.2M1280-68#14543#14611
25.2M → Finish5470-16#14611#14627
TOTALS19081792+116
📊

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