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BOSTON MARATHON 2023

Charles Helfrich

Bib: 31865•M

NH

0:00
0:00
/ mi
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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
33:37
Rank: #25395
Start → 5K
10:49/mi
33:37 split
10K· 6.21 mi
1:06:47
Rank: #25165 (+230)
5K → 10K
10:41/mi
33:10 split
15K· 9.32 mi
1:39:32
Rank: #24942 (+223)
10K → 15K
10:32/mi
32:45 split
20K· 12.43 mi
2:13:26
Rank: #24833 (+109)
15K → 20K
10:55/mi
33:54 split
Half· 13.11 mi
2:20:46
Rank: #24816 (+17)
20K → Half
10:45/mi
7:20 split
25K· 15.53 mi
2:50:11
Rank: #24937 (-121)
Half → 25K
12:08/mi
29:25 split
30K· 18.64 mi
3:26:27
Rank: #24794 (+143)
25K → 30K
11:40/mi
36:16 split
20M
3:42:28
Rank: #24723 (+71)
30K → 20M
11:47/mi
16:01 split
21M
3:54:55
Rank: #24683 (+40)
20M → 21M
12:27/mi
12:27 split
35K· 21.75 mi
4:03:49
Rank: #24681 (+2)
21M → 35K
11:54/mi
8:54 split
23M
4:19:08
Rank: #24650 (+31)
35K → 23M
12:14/mi
15:19 split
24M
4:31:23
Rank: #24685 (-35)
23M → 24M
12:15/mi
12:15 split
40K· 24.85 mi
4:42:06
Rank: #24684 (+1)
24M → 40K
12:32/mi
10:43 split
25.2M
4:46:26
Rank: #24669 (+15)
40K → 25.2M
12:34/mi
4:20 split
Finish· 26.22 mi
4:57:44
Rank: #24674 (-5)
25.2M → Finish
11:05/mi
11:18 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:20:46
Pace10:44 /mi
2nd Half
Distance13.11 mi
Time2:36:58
Pace11:58 /mi
📊Positive Split: 11.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:4433:3710:4933:37
10:49
-
10K
6.21 mi12:26:541:06:4710:4533:10
10:41
-0:08
15K
9.32 mi12:59:391:39:3210:4132:45
10:32
-0:09
20K
12.43 mi13:33:332:13:2610:4433:54
10:55
+0:23
Half
13.11 mi13:40:532:20:4610:447:20
10:45
-0:10
25K
15.53 mi14:10:182:50:1110:5729:25
12:08
+1:23
30K
18.64 mi14:46:343:26:2711:0436:16
11:40
-0:28
20M
20.00 mi15:02:353:42:2811:0716:01
11:47
+0:07
21M
21.00 mi15:15:023:54:5511:1112:27
12:27
+0:40
35K
21.75 mi15:23:564:03:4911:138:54
11:54
-0:33
23M
23.00 mi15:39:154:19:0811:1615:19
12:14
+0:20
24M
24.00 mi15:51:304:31:2311:1812:15
12:15
+0:01
40K
24.85 mi16:02:134:42:0611:2110:43
12:32
+0:17
25.2M
25.20 mi16:06:334:46:2611:224:20
12:34
+0:02
Finish
26.22 mi16:17:514:57:4411:2211:18
11:05
-1:29

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

10:32 /mi

Average Pace

11:22 /mi

Slowest Pace

12:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:32:04

51% of race

Time at Steady Pace

1:58:10

40% of race

Time at Slower Pace

27:30

9% of race

Average Pace: 11:21 /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 mi11:53:4433:3710:4933:37
10:49
#25395
10K
6.21 mi12:26:541:06:4710:4533:10
10:41
#25165
15K
9.32 mi12:59:391:39:3210:4132:45
10:32
#24942
20K
12.43 mi13:33:332:13:2610:4433:54
10:55
#24833
Half
13.11 mi13:40:532:20:4610:447:20
10:45
#24816
25K
15.53 mi14:10:182:50:1110:5729:25
12:08
#24937
30K
18.64 mi14:46:343:26:2711:0436:16
11:40
#24794
20M
20.00 mi15:02:353:42:2811:0716:01
11:47
#24723
21M
21.00 mi15:15:023:54:5511:1112:27
12:27
#24683
35K
21.75 mi15:23:564:03:4911:138:54
11:54
#24681
23M
23.00 mi15:39:154:19:0811:1615:19
12:14
#24650
24M
24.00 mi15:51:304:31:2311:1812:15
12:15
#24685
40K
24.85 mi16:02:134:42:0611:2110:43
12:32
#24684
25.2M
25.20 mi16:06:334:46:2611:224:20
12:34
#24669
Finish
26.22 mi16:17:514:57:4411:2211:18
11:05
#24674
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi25395147031470324535(Top 92%)14313(Top 94%)14313(Top 271%)
10K6.21 mi3.10 mi25165+23014615+8814615+8824978(Top 94%)14527(Top 96%)14527(Top 275%)
15K9.32 mi3.11 mi24942+22314517+9814517+9824535(Top 92%)14313(Top 94%)14313(Top 271%)
20K12.43 mi3.11 mi24833+10914454+6314454+6324500(Top 92%)14278(Top 94%)14278(Top 270%)
Half13.11 mi0.68 mi24816+1714443+1114443+1124588(Top 92%)14305(Top 94%)14305(Top 271%)
25K15.53 mi2.42 mi24937-12114486-4314486-4325262(Top 95%)14577(Top 96%)14577(Top 276%)
30K18.64 mi3.11 mi24794+14314399+8714399+8724087(Top 90%)14005(Top 92%)14005(Top 265%)
20M20.00 mi1.36 mi24723+7114361+3814361+3823929(Top 90%)13869(Top 91%)13869(Top 262%)
21M21.00 mi1.00 mi24683+4014342+1914342+1923392(Top 88%)13617(Top 90%)13617(Top 258%)
35K21.75 mi0.75 mi24681+214328+1414328+1424573(Top 92%)14111(Top 93%)14111(Top 267%)
23M23.00 mi1.25 mi24650+3114313+1514313+1524279(Top 91%)13981(Top 92%)13981(Top 265%)
24M24.00 mi1.00 mi24685-3514311+214311+224790(Top 93%)14188(Top 93%)14188(Top 268%)
40K24.85 mi0.85 mi24684+114301+1014301+1024484(Top 92%)14036(Top 92%)14036(Top 266%)
25.2M25.20 mi0.35 mi24669+1514298+314298+323378(Top 88%)13489(Top 89%)13489(Top 255%)
Finish26.22 mi1.02 mi24674-5142981429824125(Top 91%)13882(Top 91%)13882(Top 263%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 92%
×21story building
+97ft-345ft

Overall

24535

Males

14313

M18-39

14313

5K→10K

3.1 - 6.2 mi

Top 94%
×5story building
+79ft-138ft

Overall

24978

Males

14527

M18-39

14527

10K→15K

6.2 - 9.3 mi

Top 92%
×3story building
+67ft-78ft

Overall

24535

Males

14313

M18-39

14313

15K→20K

9.3 - 12.4 mi

Top 92%
×5story building
+106ft-86ft

Overall

24500

Males

14278

M18-39

14278

20K→Half

12.4 - 13.1 mi

Top 92%
×2story building
+19ft-37ft

Overall

24588

Males

14305

M18-39

14305

Half→25K

13.1 - 15.5 mi

Top 95%
×4story building
+66ft-88ft

Overall

25262

Males

14577

M18-39

14577

25K→30K

15.5 - 18.6 mi

Top 90%
×9story building
+181ft-148ft

Overall

24087

Males

14005

M18-39

14005

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

23929

Males

13869

M18-39

13869

20M→21M

20.0 - 21.0 mi

Top 88%
×8story building
+106ft-24ft

Overall

23392

Males

13617

M18-39

13617

21M→35K

21.0 - 21.8 mi

Top 92%
×7story building
+17ft-86ft

Overall

24573

Males

14111

M18-39

14111

35K→23M

21.8 - 23.0 mi

Top 91%
×5story building
+23ft-63ft

Overall

24279

Males

13981

M18-39

13981

23M→24M

23.0 - 24.0 mi

Top 93%
×6story building
+12ft-82ft

Overall

24790

Males

14188

M18-39

14188

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

24484

Males

14036

M18-39

14036

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

23378

Males

13489

M18-39

13489

25.2M→Finish

25.2 - 26.2 mi

Top 91%
×2story building
+22ft-21ft

Overall

24125

Males

13882

M18-39

13882

Passing Analysis

Category:
Athletes Passed
1267
Passed By
546
Net Change
+721
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25395
5K → 10K29868+230#25395#25165
10K → 15K25229+223#25165#24942
15K → 20K15849+109#24942#24833
20K → Half258+17#24833#24816
Half → 25K43164-121#24816#24937
25K → 30K17532+143#24937#24794
30K → 20M8615+71#24794#24723
20M → 21M5212+40#24723#24683
21M → 35K2927+2#24683#24681
35K → 23M4918+31#24681#24650
23M → 24M1853-35#24650#24685
24M → 40K3332+1#24685#24684
40K → 25.2M227+15#24684#24669
25.2M → Finish2732-5#24669#24674
TOTALS1267546+721
📊

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