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BOSTON MARATHON 2023

Charles Harker

Bib: 3037•M

IL

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 8%
Gender (Male)
#0 / 15176
Top 13%
Division (M18-39)
#0 / 5285
Top 30%
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
6:52/mi
21:19
↑ 97↓ 3451.5%
10K· 6.21 mi
6:28/mi
41:23
↑ 79↓ 1380.4%
15K· 9.32 mi
6:27/mi
1:01:24
↑ 67↓ 78
20K· 12.43 mi
6:43/mi
1:22:17
↑ 106↓ 860.1%
Half· 13.11 mi
6:20/mi
1:26:36
↑ 19↓ 370.5%
25K· 15.53 mi
6:26/mi
1:42:12
↑ 66↓ 880.2%
30K· 18.64 mi
6:35/mi
2:02:40
↑ 181↓ 1480.2%
20M
6:33/mi
2:11:34
↑ 64↓ 500.2%
21M
6:52/mi
2:18:26
↑ 106↓ 241.6%
35K· 21.75 mi
6:18/mi
2:23:09
↑ 17↓ 861.7%
23M
6:33/mi
2:31:21
↑ 23↓ 630.6%
24M
6:11/mi
2:37:32
↓ 821.3%
40K· 24.85 mi
6:25/mi
2:43:01
↓ 200.3%
25.2M
6:58/mi
2:45:25
↑ 13↓ 160.2%
Finish· 26.22 mi
6:17/mi
2:51:49
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:26:36
Pace6:36 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:25:13
Pace6:30 /mi
📊Negative Split: 1.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:4621:196:5221:19
6:52
-
10K
6.21 mi10:42:5041:236:4020:04
6:28
-0:24
15K
9.32 mi11:02:511:01:246:3520:01
6:27
-0:01
20K
12.43 mi11:23:441:22:176:3720:53
6:43
+0:16
Half
13.11 mi11:28:031:26:366:364:19
6:20
-0:23
25K
15.53 mi11:43:391:42:126:3515:36
6:26
+0:06
30K
18.64 mi12:04:072:02:406:3520:28
6:35
+0:09
20M
20.00 mi12:13:012:11:346:358:54
6:33
-0:02
21M
21.00 mi12:19:532:18:266:366:52
6:52
+0:19
35K
21.75 mi12:24:362:23:096:354:43
6:18
-0:34
23M
23.00 mi12:32:482:31:216:358:12
6:33
+0:15
24M
24.00 mi12:38:592:37:326:346:11
6:11
-0:22
40K
24.85 mi12:44:282:43:016:345:29
6:25
+0:14
25.2M
25.20 mi12:46:522:45:256:342:24
6:58
+0:33
Finish
26.22 mi12:53:162:51:496:336:24
6:17
-0:41

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

6:11 /mi

Average Pace

6:33 /mi

Slowest Pace

6:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:21:14

82% of race

Time at Steady Pace

30:35

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:33 /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 mi10:22:4621:196:5221:19
6:52
#5210
10K
6.21 mi10:42:5041:236:4020:04
6:28
#3602
15K
9.32 mi11:02:511:01:246:3520:01
6:27
#3101
20K
12.43 mi11:23:441:22:176:3720:53
6:43
#3218
Half
13.11 mi11:28:031:26:366:364:19
6:20
#3126
25K
15.53 mi11:43:391:42:126:3515:36
6:26
#2854
30K
18.64 mi12:04:072:02:406:3520:28
6:35
#2635
20M
20.00 mi12:13:012:11:346:358:54
6:33
#2531
21M
21.00 mi12:19:532:18:266:366:52
6:52
#2441
35K
21.75 mi12:24:362:23:096:354:43
6:18
#2392
23M
23.00 mi12:32:482:31:216:358:12
6:33
#2321
24M
24.00 mi12:38:592:37:326:346:11
6:11
#2230
40K
24.85 mi12:44:282:43:016:345:29
6:25
#2171
25.2M
25.20 mi12:46:522:45:256:342:24
6:58
#2149
Finish
26.22 mi12:53:162:51:496:336:24
6:17
#2077
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5210482448242325(Top 9%)2232(Top 15%)2232(Top 42%)
10K6.21 mi3.10 mi3602+16083397+14273397+14272545(Top 10%)2432(Top 16%)2432(Top 46%)
15K9.32 mi3.11 mi3101+5012954+4432954+4432325(Top 9%)2232(Top 15%)2232(Top 42%)
20K12.43 mi3.11 mi3218-1173063-1093063-1093717(Top 14%)3511(Top 23%)3511(Top 66%)
Half13.11 mi0.68 mi3126+922978+852978+851900(Top 7%)1825(Top 12%)1825(Top 35%)
25K15.53 mi2.42 mi2854+2722728+2502728+2501883(Top 7%)1805(Top 12%)1805(Top 34%)
30K18.64 mi3.11 mi2635+2192516+2122516+2121911(Top 7%)1829(Top 12%)1829(Top 35%)
20M20.00 mi1.36 mi2531+1042420+962420+961660(Top 6%)1584(Top 10%)1584(Top 30%)
21M21.00 mi1.00 mi2441+902338+822338+821649(Top 6%)1570(Top 10%)1570(Top 30%)
35K21.75 mi0.75 mi2392+492291+472291+471606(Top 6%)1526(Top 10%)1526(Top 29%)
23M23.00 mi1.25 mi2321+712223+682223+681614(Top 6%)1534(Top 10%)1534(Top 29%)
24M24.00 mi1.00 mi2230+912137+862137+86989(Top 4%)938(Top 6%)938(Top 18%)
40K24.85 mi0.85 mi2171+592083+542083+541257(Top 5%)1185(Top 8%)1185(Top 22%)
25.2M25.20 mi0.35 mi2149+222062+212062+211626(Top 6%)1532(Top 10%)1532(Top 29%)
Finish26.22 mi1.02 mi2077+721991+711991+711544(Top 6%)1459(Top 10%)1459(Top 28%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21story building
+97ft-345ft

Overall

2325

Males

2232

M18-39

2232

5K→10K

3.1 - 6.2 mi

Top 10%
×5story building
+79ft-138ft

Overall

2545

Males

2432

M18-39

2432

10K→15K

6.2 - 9.3 mi

Top 9%
×3story building
+67ft-78ft

Overall

2325

Males

2232

M18-39

2232

15K→20K

9.3 - 12.4 mi

Top 14%
×5story building
+106ft-86ft

Overall

3717

Males

3511

M18-39

3511

20K→Half

12.4 - 13.1 mi

Top 7%
×2story building
+19ft-37ft

Overall

1900

Males

1825

M18-39

1825

Half→25K

13.1 - 15.5 mi

Top 7%
×4story building
+66ft-88ft

Overall

1883

Males

1805

M18-39

1805

25K→30K

15.5 - 18.6 mi

Top 7%
×9story building
+181ft-148ft

Overall

1911

Males

1829

M18-39

1829

30K→20M

18.6 - 20.0 mi

Top 6%
×5story building
+64ft-50ft

Overall

1660

Males

1584

M18-39

1584

20M→21M

20.0 - 21.0 mi

Top 6%
×8story building
+106ft-24ft

Overall

1649

Males

1570

M18-39

1570

21M→35K

21.0 - 21.8 mi

Top 6%
×7story building
+17ft-86ft

Overall

1606

Males

1526

M18-39

1526

35K→23M

21.8 - 23.0 mi

Top 6%
×5story building
+23ft-63ft

Overall

1614

Males

1534

M18-39

1534

23M→24M

23.0 - 24.0 mi

Top 4%
×6story building
+12ft-82ft

Overall

989

Males

938

M18-39

938

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1257

Males

1185

M18-39

1185

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1626

Males

1532

M18-39

1532

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2story building
+22ft-21ft

Overall

1544

Males

1459

M18-39

1459

Passing Analysis

Category:
Athletes Passed
3350
Passed By
217
Net Change
+3133
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5210
5K → 10K16102+1608#5210#3602
10K → 15K5043+501#3602#3101
15K → 20K53170-117#3101#3218
20K → Half931+92#3218#3126
Half → 25K2731+272#3126#2854
25K → 30K2223+219#2854#2635
30K → 20M1073+104#2635#2531
20M → 21M977+90#2531#2441
21M → 35K556+49#2441#2392
35K → 23M765+71#2392#2321
23M → 24M932+91#2321#2230
24M → 40K645+59#2230#2171
40K → 25.2M253+22#2171#2149
25.2M → Finish786+72#2149#2077
TOTALS3350217+3133
📊

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