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BOSTON MARATHON 2023

Russell Lahti

Bib: 6908•M

MI

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 12%
Division (M40-44)
#0 / 2241
Top 30%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:16
Rank: #5089
Start → 5K
21:16 | 6:51/mi
10K· 6.21 mi
41:57
Rank: #4493 (+596)
5K → 10K
20:41 | 6:39/mi
15K· 9.32 mi
1:02:41
Rank: #4267 (+226)
10K → 15K
20:44 | 6:40/mi
20K· 12.43 mi
1:23:42
Rank: #4205 (+62)
15K → 20K
21:01 | 6:46/mi
Half· 13.11 mi
1:28:15
Rank: #4191 (+14)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:44:33
Rank: #4059 (+132)
Half → 25K
16:18 | 6:43/mi
30K· 18.64 mi
2:06:07
Rank: #3995 (+64)
25K → 30K
21:34 | 6:56/mi
20M
2:15:38
Rank: #3986 (+9)
30K → 20M
9:31 | 7:00/mi
21M
2:23:06
Rank: #4002 (-16)
20M → 21M
7:28 | 7:28/mi
35K· 21.75 mi
2:28:14
Rank: #4021 (-19)
21M → 35K
5:08 | 6:52/mi
23M
2:37:10
Rank: #4055 (-34)
35K → 23M
8:56 | 7:08/mi
24M
2:43:58
Rank: #4016 (+39)
23M → 24M
6:48 | 6:48/mi
40K· 24.85 mi
2:49:58
Rank: #4015 (+1)
24M → 40K
6:00 | 7:01/mi
25.2M
2:52:42
Rank: #4060 (-45)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
2:59:52
Rank: #4157 (-97)
25.2M → Finish
7:10 | 7:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:15
Pace6:44 /mi
2nd Half
Distance13.11 mi
Time1:31:37
Pace6:59 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:4321:166:5121:16
6:51
-
10K
6.21 mi10:45:2441:576:4520:41
6:39
-0:12
15K
9.32 mi11:06:081:02:416:4420:44
6:40
+0:01
20K
12.43 mi11:27:091:23:426:4421:01
6:46
+0:06
Half
13.11 mi11:31:421:28:156:444:33
6:40
-0:06
25K
15.53 mi11:48:001:44:336:4416:18
6:43
+0:03
30K
18.64 mi12:09:342:06:076:4621:34
6:56
+0:13
20M
20.00 mi12:19:052:15:386:479:31
7:00
+0:04
21M
21.00 mi12:26:332:23:066:497:28
7:28
+0:28
35K
21.75 mi12:31:412:28:146:495:08
6:52
-0:36
23M
23.00 mi12:40:372:37:106:508:56
7:08
+0:16
24M
24.00 mi12:47:252:43:586:506:48
6:48
-0:20
40K
24.85 mi12:53:252:49:586:506:00
7:01
+0:13
25.2M
25.20 mi12:56:092:52:426:512:44
7:56
+0:55
Finish
26.22 mi13:03:192:59:526:527:10
7:02
-0:54

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

6:52 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:40

94% of race

Time at Steady Pace

7:28

4% of race

Time at Slower Pace

2:44

2% 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 mi10:24:4321:166:5121:16
6:51
#5089
10K
6.21 mi10:45:2441:576:4520:41
6:39
#4493
15K
9.32 mi11:06:081:02:416:4420:44
6:40
#4267
20K
12.43 mi11:27:091:23:426:4421:01
6:46
#4205
Half
13.11 mi11:31:421:28:156:444:33
6:40
#4191
25K
15.53 mi11:48:001:44:336:4416:18
6:43
#4059
30K
18.64 mi12:09:342:06:076:4621:34
6:56
#3995
20M
20.00 mi12:19:052:15:386:479:31
7:00
#3986
21M
21.00 mi12:26:332:23:066:497:28
7:28
#4002
35K
21.75 mi12:31:412:28:146:495:08
6:52
#4021
23M
23.00 mi12:40:372:37:106:508:56
7:08
#4055
24M
24.00 mi12:47:252:43:586:506:48
6:48
#4016
40K
24.85 mi12:53:252:49:586:506:00
7:01
#4015
25.2M
25.20 mi12:56:092:52:426:512:44
7:56
#4060
Finish
26.22 mi13:03:192:59:526:527:10
7:02
#4157
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5089472047203873(Top 15%)3641(Top 24%)3641(Top 162%)
10K6.21 mi3.10 mi4493+5964200+5204200+5203948(Top 15%)3718(Top 24%)3718(Top 166%)
15K9.32 mi3.11 mi4267+2263996+2043996+2043873(Top 15%)3641(Top 24%)3641(Top 162%)
20K12.43 mi3.11 mi4205+623944+523944+524130(Top 16%)3874(Top 26%)3874(Top 173%)
Half13.11 mi0.68 mi4191+143928+163928+164051(Top 15%)3803(Top 25%)3803(Top 170%)
25K15.53 mi2.42 mi4059+1323814+1143814+1143557(Top 13%)3362(Top 22%)3362(Top 150%)
30K18.64 mi3.11 mi3995+643761+533761+533947(Top 15%)3690(Top 24%)3690(Top 165%)
20M20.00 mi1.36 mi3986+93748+133748+134043(Top 15%)3743(Top 25%)3743(Top 167%)
21M21.00 mi1.00 mi4002-163759-113759-114405(Top 17%)4019(Top 26%)4019(Top 179%)
35K21.75 mi0.75 mi4021-193773-143773-144549(Top 17%)4140(Top 27%)4140(Top 185%)
23M23.00 mi1.25 mi4055-343801-283801-284462(Top 17%)4048(Top 27%)4048(Top 181%)
24M24.00 mi1.00 mi4016+393762+393762+393659(Top 14%)3358(Top 22%)3358(Top 150%)
40K24.85 mi0.85 mi4015+13758+43758+43930(Top 15%)3533(Top 23%)3533(Top 158%)
25.2M25.20 mi0.35 mi4060-453799-413799-415972(Top 22%)4903(Top 32%)4903(Top 219%)
Finish26.22 mi1.02 mi4157-973888-893888-895380(Top 20%)4519(Top 30%)4519(Top 202%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

3873

Males

3641

M40-44

3641

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

3948

Males

3718

M40-44

3718

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

3873

Males

3641

M40-44

3641

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4130

Males

3874

M40-44

3874

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4051

Males

3803

M40-44

3803

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3557

Males

3362

M40-44

3362

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

3947

Males

3690

M40-44

3690

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

4043

Males

3743

M40-44

3743

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4405

Males

4019

M40-44

4019

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4549

Males

4140

M40-44

4140

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4462

Males

4048

M40-44

4048

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3659

Males

3358

M40-44

3358

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

3930

Males

3533

M40-44

3533

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

5972

Males

4903

M40-44

4903

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5380

Males

4519

M40-44

4519

Passing Analysis

Category:
Athletes Passed
1681
Passed By
749
Net Change
+932
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5089
5K → 10K63236+596#5089#4493
10K → 15K26034+226#4493#4267
15K → 20K12664+62#4267#4205
20K → Half3016+14#4205#4191
Half → 25K14412+132#4191#4059
25K → 30K14581+64#4059#3995
30K → 20M5849+9#3995#3986
20M → 21M6177-16#3986#4002
21M → 35K3453-19#4002#4021
35K → 23M4478-34#4021#4055
23M → 24M7031+39#4055#4016
24M → 40K4847+1#4016#4015
40K → 25.2M1257-45#4015#4060
25.2M → Finish17114-97#4060#4157
TOTALS1681749+932
📊

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