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BOSTON MARATHON 2023

Ian Mccallum-Cook

Bib: 639•M

VT

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 5%
Gender (Male)
#0 / 15176
Top 8%
Division (M18-39)
#0 / 5285
Top 18%
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
6:04/mi
18:50
↑ 97↓ 3451.5%
10K· 6.21 mi
5:56/mi
37:17
↑ 79↓ 1380.4%
15K· 9.32 mi
6:00/mi
55:54
↑ 67↓ 78
20K· 12.43 mi
6:01/mi
1:14:37
↑ 106↓ 860.1%
Half· 13.11 mi
5:59/mi
1:18:42
↑ 19↓ 370.5%
25K· 15.53 mi
6:04/mi
1:33:25
↑ 66↓ 880.2%
30K· 18.64 mi
6:21/mi
1:53:08
↑ 181↓ 1480.2%
20M
7:08/mi
2:02:50
↑ 64↓ 500.2%
21M
7:42/mi
2:10:32
↑ 106↓ 241.6%
35K· 21.75 mi
6:09/mi
2:15:08
↑ 17↓ 861.7%
23M
7:12/mi
2:24:09
↑ 23↓ 630.6%
24M
6:28/mi
2:30:37
↓ 821.3%
40K· 24.85 mi
7:24/mi
2:36:57
↓ 200.3%
25.2M
7:12/mi
2:39:26
↑ 13↓ 160.2%
Finish· 26.22 mi
6:32/mi
2:46:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:42
Pace6:00 /mi
2nd Half
Distance13.11 mi
Time1:27:23
Pace6:40 /mi
📊Positive Split: 11.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:0118:506:0418:50
6:04
-
10K
6.21 mi10:37:2837:176:0018:27
5:56
-0:08
15K
9.32 mi10:56:0555:546:0018:37
6:00
+0:04
20K
12.43 mi11:14:481:14:376:0018:43
6:01
+0:01
Half
13.11 mi11:18:531:18:426:004:05
5:59
-0:02
25K
15.53 mi11:33:361:33:256:0114:43
6:04
+0:05
30K
18.64 mi11:53:191:53:086:0419:43
6:21
+0:17
20M
20.00 mi12:03:012:02:506:089:42
7:08
+0:47
21M
21.00 mi12:10:432:10:326:137:42
7:42
+0:34
35K
21.75 mi12:15:192:15:086:134:36
6:09
-1:33
23M
23.00 mi12:24:202:24:096:169:01
7:12
+1:03
24M
24.00 mi12:30:482:30:376:176:28
6:28
-0:44
40K
24.85 mi12:37:082:36:576:196:20
7:24
+0:56
25.2M
25.20 mi12:39:372:39:266:202:29
7:12
-0:12
Finish
26.22 mi12:46:162:46:056:206:39
6:32
-0:40

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

5:56 /mi

Average Pace

6:20 /mi

Slowest Pace

7:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

59:52

36% of race

Time at Steady Pace

1:10:59

43% of race

Time at Slower Pace

35:14

21% of race

Average Pace: 6:20 /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 mi10:19:0118:506:0418:50
6:04
#809
10K
6.21 mi10:37:2837:176:0018:27
5:56
#732
15K
9.32 mi10:56:0555:546:0018:37
6:00
#717
20K
12.43 mi11:14:481:14:376:0018:43
6:01
#680
Half
13.11 mi11:18:531:18:426:004:05
5:59
#678
25K
15.53 mi11:33:361:33:256:0114:43
6:04
#668
30K
18.64 mi11:53:191:53:086:0419:43
6:21
#710
20M
20.00 mi12:03:012:02:506:089:42
7:08
#836
21M
21.00 mi12:10:432:10:326:137:42
7:42
#950
35K
21.75 mi12:15:192:15:086:134:36
6:09
#948
23M
23.00 mi12:24:202:24:096:169:01
7:12
#1057
24M
24.00 mi12:30:482:30:376:176:28
6:28
#1070
40K
24.85 mi12:37:082:36:576:196:20
7:24
#1163
25.2M
25.20 mi12:39:372:39:266:202:29
7:12
#1174
Finish
26.22 mi12:46:162:46:056:206:39
6:32
#1212
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi809760760693(Top 3%)650(Top 4%)650(Top 12%)
10K6.21 mi3.10 mi732+77688+72688+72671(Top 3%)627(Top 4%)627(Top 12%)
15K9.32 mi3.11 mi717+15673+15673+15693(Top 3%)650(Top 4%)650(Top 12%)
20K12.43 mi3.11 mi680+37637+36637+36610(Top 2%)570(Top 4%)570(Top 11%)
Half13.11 mi0.68 mi678+2635+2635+2744(Top 3%)703(Top 5%)703(Top 13%)
25K15.53 mi2.42 mi668+10627+8627+8674(Top 3%)633(Top 4%)633(Top 12%)
30K18.64 mi3.11 mi710-42668-41668-411051(Top 4%)1000(Top 7%)1000(Top 19%)
20M20.00 mi1.36 mi836-126791-123791-1234772(Top 18%)4352(Top 29%)4352(Top 82%)
21M21.00 mi1.00 mi950-114903-112903-1125570(Top 21%)4871(Top 32%)4871(Top 92%)
35K21.75 mi0.75 mi948+2901+2901+21083(Top 4%)1031(Top 7%)1031(Top 20%)
23M23.00 mi1.25 mi1057-1091005-1041005-1044763(Top 18%)4279(Top 28%)4279(Top 81%)
24M24.00 mi1.00 mi1070-131018-131018-131927(Top 7%)1808(Top 12%)1808(Top 34%)
40K24.85 mi0.85 mi1163-931109-911109-916069(Top 23%)5043(Top 33%)5043(Top 95%)
25.2M25.20 mi0.35 mi1174-111120-111120-112448(Top 9%)2261(Top 15%)2261(Top 43%)
Finish26.22 mi1.02 mi1212-381155-351155-352583(Top 10%)2369(Top 16%)2369(Top 45%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21story building
+97ft-345ft

Overall

693

Males

650

M18-39

650

5K→10K

3.1 - 6.2 mi

Top 3%
×5story building
+79ft-138ft

Overall

671

Males

627

M18-39

627

10K→15K

6.2 - 9.3 mi

Top 3%
×3story building
+67ft-78ft

Overall

693

Males

650

M18-39

650

15K→20K

9.3 - 12.4 mi

Top 2%
×5story building
+106ft-86ft

Overall

610

Males

570

M18-39

570

20K→Half

12.4 - 13.1 mi

Top 3%
×2story building
+19ft-37ft

Overall

744

Males

703

M18-39

703

Half→25K

13.1 - 15.5 mi

Top 3%
×4story building
+66ft-88ft

Overall

674

Males

633

M18-39

633

25K→30K

15.5 - 18.6 mi

Top 4%
×9story building
+181ft-148ft

Overall

1051

Males

1000

M18-39

1000

30K→20M

18.6 - 20.0 mi

Top 18%
×5story building
+64ft-50ft

Overall

4772

Males

4352

M18-39

4352

20M→21M

20.0 - 21.0 mi

Top 21%
×8story building
+106ft-24ft

Overall

5570

Males

4871

M18-39

4871

21M→35K

21.0 - 21.8 mi

Top 4%
×7story building
+17ft-86ft

Overall

1083

Males

1031

M18-39

1031

35K→23M

21.8 - 23.0 mi

Top 18%
×5story building
+23ft-63ft

Overall

4763

Males

4279

M18-39

4279

23M→24M

23.0 - 24.0 mi

Top 7%
×6story building
+12ft-82ft

Overall

1927

Males

1808

M18-39

1808

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6069

Males

5043

M18-39

5043

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2448

Males

2261

M18-39

2261

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2story building
+22ft-21ft

Overall

2583

Males

2369

M18-39

2369

Passing Analysis

Category:
Athletes Passed
236
Passed By
639
Net Change
-403
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#809
5K → 10K9316+77#809#732
10K → 15K3318+15#732#717
15K → 20K414+37#717#680
20K → Half42+2#680#678
Half → 25K2212+10#678#668
25K → 30K951-42#668#710
30K → 20M1127-126#710#836
20M → 21M2116-114#836#950
21M → 35K75+2#950#948
35K → 23M2111-109#948#1057
23M → 24M720-13#1057#1070
24M → 40K497-93#1070#1163
40K → 25.2M112-11#1163#1174
25.2M → Finish1048-38#1174#1212
TOTALS236639-403
📊

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