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BOSTON MARATHON 2023

Cam Kirkwood

Bib: 9257•M

ON

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 13%
Division (M40-44)
#0 / 2241
Top 32%
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
6:50/mi
21:13
↑ 97↓ 3451.5%
10K· 6.21 mi
6:47/mi
42:16
↑ 79↓ 1380.4%
15K· 9.32 mi
6:50/mi
1:03:29
↑ 67↓ 78
20K· 12.43 mi
6:48/mi
1:24:36
↑ 106↓ 860.1%
Half· 13.11 mi
6:47/mi
1:29:14
↑ 19↓ 370.5%
25K· 15.53 mi
6:51/mi
1:45:50
↑ 66↓ 880.2%
30K· 18.64 mi
6:58/mi
2:07:30
↑ 181↓ 1480.2%
20M
6:59/mi
2:16:59
↑ 64↓ 500.2%
21M
7:32/mi
2:24:31
↑ 106↓ 241.6%
35K· 21.75 mi
6:50/mi
2:29:38
↑ 17↓ 861.7%
23M
7:04/mi
2:38:29
↑ 23↓ 630.6%
24M
6:50/mi
2:45:19
↓ 821.3%
40K· 24.85 mi
6:59/mi
2:51:17
↓ 200.3%
25.2M
7:24/mi
2:53:50
↑ 13↓ 160.2%
Finish· 26.22 mi
6:34/mi
3:00:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:14
Pace6:48 /mi
2nd Half
Distance13.11 mi
Time1:31:17
Pace6:58 /mi
📊Positive Split: 2.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:5321:136:5021:13
6:50
-
10K
6.21 mi11:07:5642:166:4821:03
6:47
-0:03
15K
9.32 mi11:29:091:03:296:4921:13
6:50
+0:03
20K
12.43 mi11:50:161:24:366:4821:07
6:48
-0:02
Half
13.11 mi11:54:541:29:146:484:38
6:47
-0:01
25K
15.53 mi12:11:301:45:506:4916:36
6:51
+0:04
30K
18.64 mi12:33:102:07:306:5021:40
6:58
+0:07
20M
20.00 mi12:42:392:16:596:519:29
6:59
+0:01
21M
21.00 mi12:50:112:24:316:537:32
7:32
+0:33
35K
21.75 mi12:55:182:29:386:535:07
6:50
-0:42
23M
23.00 mi13:04:092:38:296:538:51
7:04
+0:14
24M
24.00 mi13:10:592:45:196:536:50
6:50
-0:14
40K
24.85 mi13:16:572:51:176:535:58
6:59
+0:09
25.2M
25.20 mi13:19:302:53:506:542:33
7:24
+0:25
Finish
26.22 mi13:26:113:00:316:536:41
6:34
-0:50

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

6:34 /mi

Average Pace

6:53 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:26

94% of race

Time at Steady Pace

10:05

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:53 /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 mi10:46:5321:136:5021:13
6:50
#4940
10K
6.21 mi11:07:5642:166:4821:03
6:47
#4980
15K
9.32 mi11:29:091:03:296:4921:13
6:50
#5091
20K
12.43 mi11:50:161:24:366:4821:07
6:48
#4915
Half
13.11 mi11:54:541:29:146:484:38
6:47
#4929
25K
15.53 mi12:11:301:45:506:4916:36
6:51
#4823
30K
18.64 mi12:33:102:07:306:5021:40
6:58
#4666
20M
20.00 mi12:42:392:16:596:519:29
6:59
#4575
21M
21.00 mi12:50:112:24:316:537:32
7:32
#4600
35K
21.75 mi12:55:182:29:386:535:07
6:50
#4582
23M
23.00 mi13:04:092:38:296:538:51
7:04
#4525
24M
24.00 mi13:10:592:45:196:536:50
6:50
#4478
40K
24.85 mi13:16:572:51:176:535:58
6:59
#4427
25.2M
25.20 mi13:19:302:53:506:542:33
7:24
#4398
Finish
26.22 mi13:26:113:00:316:536:41
6:34
#4311
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4940458645865365(Top 20%)4950(Top 33%)4950(Top 221%)
10K6.21 mi3.10 mi4980-404619-334619-335045(Top 19%)4668(Top 31%)4668(Top 208%)
15K9.32 mi3.11 mi5091-1114724-1054724-1055365(Top 20%)4950(Top 33%)4950(Top 221%)
20K12.43 mi3.11 mi4915+1764576+1484576+1484408(Top 17%)4114(Top 27%)4114(Top 184%)
Half13.11 mi0.68 mi4929-144585-94585-95137(Top 19%)4747(Top 31%)4747(Top 212%)
25K15.53 mi2.42 mi4823+1064487+984487+984544(Top 17%)4231(Top 28%)4231(Top 189%)
30K18.64 mi3.11 mi4666+1574351+1364351+1364174(Top 16%)3894(Top 26%)3894(Top 174%)
20M20.00 mi1.36 mi4575+914267+844267+843910(Top 15%)3638(Top 24%)3638(Top 162%)
21M21.00 mi1.00 mi4600-254286-194286-194734(Top 18%)4275(Top 28%)4275(Top 191%)
35K21.75 mi0.75 mi4582+184266+204266+204431(Top 17%)4049(Top 27%)4049(Top 181%)
23M23.00 mi1.25 mi4525+574214+524214+524135(Top 16%)3791(Top 25%)3791(Top 169%)
24M24.00 mi1.00 mi4478+474178+364178+363833(Top 14%)3505(Top 23%)3505(Top 156%)
40K24.85 mi0.85 mi4427+514131+474131+473735(Top 14%)3376(Top 22%)3376(Top 151%)
25.2M25.20 mi0.35 mi4398+294103+284103+283412(Top 13%)3095(Top 20%)3095(Top 138%)
Finish26.22 mi1.02 mi4311+874021+824021+822771(Top 10%)2529(Top 17%)2529(Top 113%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21story building
+97ft-345ft

Overall

5365

Males

4950

M40-44

4950

5K→10K

3.1 - 6.2 mi

Top 19%
×5story building
+79ft-138ft

Overall

5045

Males

4668

M40-44

4668

10K→15K

6.2 - 9.3 mi

Top 20%
×3story building
+67ft-78ft

Overall

5365

Males

4950

M40-44

4950

15K→20K

9.3 - 12.4 mi

Top 17%
×5story building
+106ft-86ft

Overall

4408

Males

4114

M40-44

4114

20K→Half

12.4 - 13.1 mi

Top 19%
×2story building
+19ft-37ft

Overall

5137

Males

4747

M40-44

4747

Half→25K

13.1 - 15.5 mi

Top 17%
×4story building
+66ft-88ft

Overall

4544

Males

4231

M40-44

4231

25K→30K

15.5 - 18.6 mi

Top 16%
×9story building
+181ft-148ft

Overall

4174

Males

3894

M40-44

3894

30K→20M

18.6 - 20.0 mi

Top 15%
×5story building
+64ft-50ft

Overall

3910

Males

3638

M40-44

3638

20M→21M

20.0 - 21.0 mi

Top 18%
×8story building
+106ft-24ft

Overall

4734

Males

4275

M40-44

4275

21M→35K

21.0 - 21.8 mi

Top 17%
×7story building
+17ft-86ft

Overall

4431

Males

4049

M40-44

4049

35K→23M

21.8 - 23.0 mi

Top 16%
×5story building
+23ft-63ft

Overall

4135

Males

3791

M40-44

3791

23M→24M

23.0 - 24.0 mi

Top 14%
×6story building
+12ft-82ft

Overall

3833

Males

3505

M40-44

3505

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3735

Males

3376

M40-44

3376

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3412

Males

3095

M40-44

3095

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2story building
+22ft-21ft

Overall

2771

Males

2529

M40-44

2529

Passing Analysis

Category:
Athletes Passed
1411
Passed By
782
Net Change
+629
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4940
5K → 10K174214-40#4940#4980
10K → 15K66177-111#4980#5091
15K → 20K21034+176#5091#4915
20K → Half1327-14#4915#4929
Half → 25K14842+106#4929#4823
25K → 30K21962+157#4823#4666
30K → 20M11221+91#4666#4575
20M → 21M5176-25#4575#4600
21M → 35K5032+18#4600#4582
35K → 23M9134+57#4582#4525
23M → 24M7427+47#4525#4478
24M → 40K7120+51#4478#4427
40K → 25.2M356+29#4427#4398
25.2M → Finish9710+87#4398#4311
TOTALS1411782+629
📊

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