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BOSTON MARATHON 2023

Guillaume Lefebvre

Bib: 4815•M

QC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 16%
Gender (Male)
#0 / 15176
Top 26%
Masters (Masters Men)
#0 / 9891
Top 13%
Division (M45-49)
#0 / 2252
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:13
Rank: #4937
Start → 5K
21:13 | 6:50/mi
10K· 6.21 mi
41:52
Rank: #4357 (+580)
5K → 10K
20:39 | 6:39/mi
15K· 9.32 mi
1:02:37
Rank: #4195 (+162)
10K → 15K
20:45 | 6:41/mi
20K· 12.43 mi
1:23:58
Rank: #4410 (-215)
15K → 20K
21:21 | 6:52/mi
Half· 13.11 mi
1:28:32
Rank: #4393 (+17)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:44:53
Rank: #4238 (+155)
Half → 25K
16:21 | 6:45/mi
30K· 18.64 mi
2:06:10
Rank: #4017 (+221)
25K → 30K
21:17 | 6:51/mi
20M
2:15:30
Rank: #3920 (+97)
30K → 20M
9:20 | 6:52/mi
21M
2:22:51
Rank: #3887 (+33)
20M → 21M
7:21 | 7:21/mi
35K· 21.75 mi
2:28:06
Rank: #3962 (-75)
21M → 35K
5:15 | 7:01/mi
23M
2:37:07
Rank: #4028 (-66)
35K → 23M
9:01 | 7:12/mi
24M
2:44:11
Rank: #4093 (-65)
23M → 24M
7:04 | 7:04/mi
40K· 24.85 mi
2:50:23
Rank: #4156 (-63)
24M → 40K
6:12 | 7:15/mi
25.2M
2:53:03
Rank: #4182 (-26)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
3:00:09
Rank: #4227 (-45)
25.2M → Finish
7:06 | 6:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:32
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:31:37
Pace6:59 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:2221:136:5021:13
6:50
-
10K
6.21 mi10:44:0141:526:4420:39
6:39
-0:11
15K
9.32 mi11:04:461:02:376:4320:45
6:41
+0:02
20K
12.43 mi11:26:071:23:586:4521:21
6:52
+0:11
Half
13.11 mi11:30:411:28:326:454:34
6:42
-0:10
25K
15.53 mi11:47:021:44:536:4516:21
6:45
+0:03
30K
18.64 mi12:08:192:06:106:4621:17
6:51
+0:06
20M
20.00 mi12:17:392:15:306:469:20
6:52
+0:01
21M
21.00 mi12:25:002:22:516:487:21
7:21
+0:29
35K
21.75 mi12:30:152:28:066:495:15
7:01
-0:20
23M
23.00 mi12:39:162:37:076:509:01
7:12
+0:11
24M
24.00 mi12:46:202:44:116:507:04
7:04
-0:08
40K
24.85 mi12:52:322:50:236:516:12
7:15
+0:11
25.2M
25.20 mi12:55:122:53:036:522:40
7:44
+0:29
Finish
26.22 mi13:02:183:00:096:537:06
6:58
-0:46

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

6:39 /mi

Average Pace

6:53 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:08

94% of race

Time at Steady Pace

10:01

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:52 /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 mi10:23:2221:136:5021:13
6:50
#4937
10K
6.21 mi10:44:0141:526:4420:39
6:39
#4357
15K
9.32 mi11:04:461:02:376:4320:45
6:41
#4195
20K
12.43 mi11:26:071:23:586:4521:21
6:52
#4410
Half
13.11 mi11:30:411:28:326:454:34
6:42
#4393
25K
15.53 mi11:47:021:44:536:4516:21
6:45
#4238
30K
18.64 mi12:08:192:06:106:4621:17
6:51
#4017
20M
20.00 mi12:17:392:15:306:469:20
6:52
#3920
21M
21.00 mi12:25:002:22:516:487:21
7:21
#3887
35K
21.75 mi12:30:152:28:066:495:15
7:01
#3962
23M
23.00 mi12:39:162:37:076:509:01
7:12
#4028
24M
24.00 mi12:46:202:44:116:507:04
7:04
#4093
40K
24.85 mi12:52:322:50:236:516:12
7:15
#4156
25.2M
25.20 mi12:55:122:53:036:522:40
7:44
#4182
Finish
26.22 mi13:02:183:00:096:537:06
6:58
#4227
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi4937458345833932(Top 15%)3696(Top 24%)3696(Top 164%)
10K6.21 mi3.10 mi4357+5804081+5024081+5023866(Top 15%)3643(Top 24%)3643(Top 162%)
15K9.32 mi3.11 mi4195+1623934+1473934+1473932(Top 15%)3696(Top 24%)3696(Top 164%)
20K12.43 mi3.11 mi4410-2154125-1914125-1915106(Top 19%)4721(Top 31%)4721(Top 210%)
Half13.11 mi0.68 mi4393+174112+134112+134277(Top 16%)4001(Top 26%)4001(Top 178%)
25K15.53 mi2.42 mi4238+1553974+1383974+1383704(Top 14%)3489(Top 23%)3489(Top 155%)
30K18.64 mi3.11 mi4017+2213778+1963778+1963321(Top 12%)3129(Top 21%)3129(Top 139%)
20M20.00 mi1.36 mi3920+973692+863692+863238(Top 12%)3035(Top 20%)3035(Top 135%)
21M21.00 mi1.00 mi3887+333659+333659+333880(Top 15%)3588(Top 24%)3588(Top 159%)
35K21.75 mi0.75 mi3962-753722-633722-635388(Top 20%)4784(Top 32%)4784(Top 212%)
23M23.00 mi1.25 mi4028-663776-543776-544768(Top 18%)4284(Top 28%)4284(Top 190%)
24M24.00 mi1.00 mi4093-653833-573833-574992(Top 19%)4410(Top 29%)4410(Top 196%)
40K24.85 mi0.85 mi4156-633890-573890-575126(Top 19%)4422(Top 29%)4422(Top 196%)
25.2M25.20 mi0.35 mi4182-263913-233913-234968(Top 19%)4245(Top 28%)4245(Top 188%)
Finish26.22 mi1.02 mi4227-453949-363949-364991(Top 19%)4262(Top 28%)4262(Top 189%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

3932

Males

3696

M45-49

3696

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

3866

Males

3643

M45-49

3643

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

3932

Males

3696

M45-49

3696

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5106

Males

4721

M45-49

4721

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4277

Males

4001

M45-49

4001

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3704

Males

3489

M45-49

3489

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3321

Males

3129

M45-49

3129

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3238

Males

3035

M45-49

3035

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

3880

Males

3588

M45-49

3588

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5388

Males

4784

M45-49

4784

35K→23M

21.8 - 23.0 mi

Top 18%
×5stories
+23ft-63ft

Overall

4768

Males

4284

M45-49

4284

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

4992

Males

4410

M45-49

4410

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5126

Males

4422

M45-49

4422

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

4968

Males

4245

M45-49

4245

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2stories
+22ft-21ft

Overall

4991

Males

4262

M45-49

4262

Passing Analysis

Category:
Athletes Passed
1696
Passed By
986
Net Change
+710
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4937
5K → 10K61939+580#4937#4357
10K → 15K21957+162#4357#4195
15K → 20K41256-215#4195#4410
20K → Half2811+17#4410#4393
Half → 25K17924+155#4393#4238
25K → 30K24726+221#4238#4017
30K → 20M11114+97#4017#3920
20M → 21M8451+33#3920#3887
21M → 35K1994-75#3887#3962
35K → 23M40106-66#3962#4028
23M → 24M3398-65#4028#4093
24M → 40K3295-63#4093#4156
40K → 25.2M1238-26#4156#4182
25.2M → Finish3277-45#4182#4227
TOTALS1696986+710
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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