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BOSTON MARATHON 2023

Lester Helfman

Bib: 24390•M

NJ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M70-74)
#0 / 213
Top 50%
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
9:13/mi
28:37
↑ 97↓ 3451.5%
10K· 6.21 mi
9:30/mi
58:08
↑ 79↓ 1380.4%
15K· 9.32 mi
9:44/mi
1:28:23
↑ 67↓ 78
20K· 12.43 mi
9:51/mi
1:59:00
↑ 106↓ 860.1%
Half· 13.11 mi
9:46/mi
2:05:40
↑ 19↓ 370.5%
25K· 15.53 mi
9:56/mi
2:29:46
↑ 66↓ 880.2%
30K· 18.64 mi
10:07/mi
3:01:13
↑ 181↓ 1480.2%
20M
10:16/mi
3:15:10
↑ 64↓ 500.2%
21M
10:49/mi
3:25:59
↑ 106↓ 241.6%
35K· 21.75 mi
9:53/mi
3:33:23
↑ 17↓ 861.7%
23M
10:23/mi
3:46:23
↑ 23↓ 630.6%
24M
10:19/mi
3:56:42
↓ 821.3%
40K· 24.85 mi
10:43/mi
4:05:52
↓ 200.3%
25.2M
11:36/mi
4:09:52
↑ 13↓ 160.2%
Finish· 26.22 mi
10:38/mi
4:20:42
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:40
Pace9:35 /mi
2nd Half
Distance13.11 mi
Time2:15:02
Pace10:18 /mi
📊Positive Split: 7.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:0328:379:1328:37
9:13
-
10K
6.21 mi12:13:3458:089:2129:31
9:30
+0:17
15K
9.32 mi12:43:491:28:239:2930:15
9:44
+0:14
20K
12.43 mi13:14:261:59:009:3530:37
9:51
+0:07
Half
13.11 mi13:21:062:05:409:356:40
9:46
-0:05
25K
15.53 mi13:45:122:29:469:3824:06
9:56
+0:10
30K
18.64 mi14:16:393:01:139:4331:27
10:07
+0:11
20M
20.00 mi14:30:363:15:109:4513:57
10:16
+0:09
21M
21.00 mi14:41:253:25:599:4910:49
10:49
+0:33
35K
21.75 mi14:48:493:33:239:497:24
9:53
-0:56
23M
23.00 mi15:01:493:46:239:5113:00
10:23
+0:30
24M
24.00 mi15:12:083:56:429:5210:19
10:19
-0:04
40K
24.85 mi15:21:184:05:529:549:10
10:43
+0:24
25.2M
25.20 mi15:25:184:09:529:554:00
11:36
+0:53
Finish
26.22 mi15:36:084:20:429:5710:50
10:38
-0:58

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

9:13 /mi

Average Pace

9:57 /mi

Slowest Pace

11:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:35:03

36% of race

Time at Steady Pace

2:10:50

50% of race

Time at Slower Pace

34:49

13% of race

Average Pace: 9:57 /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 mi11:44:0328:379:1328:37
9:13
#21232
10K
6.21 mi12:13:3458:089:2129:31
9:30
#21898
15K
9.32 mi12:43:491:28:239:2930:15
9:44
#22247
20K
12.43 mi13:14:261:59:009:3530:37
9:51
#22318
Half
13.11 mi13:21:062:05:409:356:40
9:46
#22357
25K
15.53 mi13:45:122:29:469:3824:06
9:56
#22320
30K
18.64 mi14:16:393:01:139:4331:27
10:07
#22125
20M
20.00 mi14:30:363:15:109:4513:57
10:16
#22043
21M
21.00 mi14:41:253:25:599:4910:49
10:49
#21950
35K
21.75 mi14:48:493:33:239:497:24
9:53
#21928
23M
23.00 mi15:01:493:46:239:5113:00
10:23
#21859
24M
24.00 mi15:12:083:56:429:5210:19
10:19
#21853
40K
24.85 mi15:21:184:05:529:549:10
10:43
#21848
25.2M
25.20 mi15:25:184:09:529:554:00
11:36
#21844
Finish
26.22 mi15:36:084:20:429:5710:50
10:38
#21906
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM70-74Seg. OverallSeg. MalesSeg. M70-74
5K3.11 mi3.11 mi21232127231272322897(Top 86%)13589(Top 90%)13589(Top 6380%)
10K6.21 mi3.10 mi21898-66613083-36013083-36022518(Top 85%)13401(Top 88%)13401(Top 6292%)
15K9.32 mi3.11 mi22247-34913263-18013263-18022897(Top 86%)13589(Top 90%)13589(Top 6380%)
20K12.43 mi3.11 mi22318-7113305-4213305-4222533(Top 85%)13411(Top 88%)13411(Top 6296%)
Half13.11 mi0.68 mi22357-3913326-2113326-2122786(Top 86%)13525(Top 89%)13525(Top 6350%)
25K15.53 mi2.42 mi22320+3713286+4013286+4022082(Top 83%)13179(Top 87%)13179(Top 6187%)
30K18.64 mi3.11 mi22125+19513195+9113195+9121339(Top 80%)12778(Top 84%)12778(Top 5999%)
20M20.00 mi1.36 mi22043+8213150+4513150+4521174(Top 80%)12650(Top 83%)12650(Top 5939%)
21M21.00 mi1.00 mi21950+9313103+4713103+4720413(Top 77%)12242(Top 81%)12242(Top 5747%)
35K21.75 mi0.75 mi21928+2213094+913094+920976(Top 79%)12478(Top 82%)12478(Top 5858%)
23M23.00 mi1.25 mi21859+6913041+5313041+5321030(Top 79%)12471(Top 82%)12471(Top 5855%)
24M24.00 mi1.00 mi21853+613030+1113030+1121603(Top 81%)12689(Top 84%)12689(Top 5957%)
40K24.85 mi0.85 mi21848+513015+1513015+1521751(Top 82%)12714(Top 84%)12714(Top 5969%)
25.2M25.20 mi0.35 mi21844+413007+813007+821745(Top 82%)12739(Top 84%)12739(Top 5981%)
Finish26.22 mi1.02 mi21906-6213028-2113028-2123276(Top 87%)13464(Top 89%)13464(Top 6321%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21story building
+97ft-345ft

Overall

22897

Males

13589

M70-74

13589

5K→10K

3.1 - 6.2 mi

Top 85%
×5story building
+79ft-138ft

Overall

22518

Males

13401

M70-74

13401

10K→15K

6.2 - 9.3 mi

Top 86%
×3story building
+67ft-78ft

Overall

22897

Males

13589

M70-74

13589

15K→20K

9.3 - 12.4 mi

Top 85%
×5story building
+106ft-86ft

Overall

22533

Males

13411

M70-74

13411

20K→Half

12.4 - 13.1 mi

Top 86%
×2story building
+19ft-37ft

Overall

22786

Males

13525

M70-74

13525

Half→25K

13.1 - 15.5 mi

Top 83%
×4story building
+66ft-88ft

Overall

22082

Males

13179

M70-74

13179

25K→30K

15.5 - 18.6 mi

Top 80%
×9story building
+181ft-148ft

Overall

21339

Males

12778

M70-74

12778

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

21174

Males

12650

M70-74

12650

20M→21M

20.0 - 21.0 mi

Top 77%
×8story building
+106ft-24ft

Overall

20413

Males

12242

M70-74

12242

21M→35K

21.0 - 21.8 mi

Top 79%
×7story building
+17ft-86ft

Overall

20976

Males

12478

M70-74

12478

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

21030

Males

12471

M70-74

12471

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

21603

Males

12689

M70-74

12689

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21751

Males

12714

M70-74

12714

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

21745

Males

12739

M70-74

12739

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

23276

Males

13464

M70-74

13464

Passing Analysis

Category:
Athletes Passed
1060
Passed By
1734
Net Change
-674
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21232
5K → 10K60726-666#21232#21898
10K → 15K66415-349#21898#22247
15K → 20K107178-71#22247#22318
20K → Half1453-39#22318#22357
Half → 25K11780+37#22357#22320
25K → 30K22934+195#22320#22125
30K → 20M10725+82#22125#22043
20M → 21M11320+93#22043#21950
21M → 35K3816+22#21950#21928
35K → 23M9425+69#21928#21859
23M → 24M3731+6#21859#21853
24M → 40K4035+5#21853#21848
40K → 25.2M1814+4#21848#21844
25.2M → Finish2082-62#21844#21906
TOTALS10601734-674
📊

Passing Visuals

Category:
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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