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BOSTON MARATHON 2023

Christopher Kalima

Bib: 5703•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 21%
Gender (Male)
#0 / 15176
Top 34%
Masters (Masters Men)
#0 / 9891
Top 19%
Division (M40-44)
#0 / 2241
Top 44%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:14
Rank: #4975
Start → 5K
21:14 | 6:50/mi
10K· 6.21 mi
42:27
Rank: #5239 (-264)
5K → 10K
21:14 | 6:50/mi
15K· 9.32 mi
1:03:28
Rank: #5087 (+152)
10K → 15K
21:01 | 6:46/mi
20K· 12.43 mi
1:25:08
Rank: #5337 (-250)
15K → 20K
21:40 | 6:58/mi
Half· 13.11 mi
1:29:48
Rank: #5348 (-11)
20K → Half
4:40 | 6:50/mi
25K· 15.53 mi
1:46:49
Rank: #5422 (-74)
Half → 25K
17:01 | 7:01/mi
30K· 18.64 mi
2:09:15
Rank: #5441 (-19)
25K → 30K
22:26 | 7:13/mi
20M
2:19:16
Rank: #5440 (+1)
30K → 20M
10:01 | 7:22/mi
21M
2:27:44
Rank: #5620 (-180)
20M → 21M
8:28 | 8:28/mi
35K· 21.75 mi
2:33:10
Rank: #5648 (-28)
21M → 35K
5:26 | 7:16/mi
23M
2:42:18
Rank: #5558 (+90)
35K → 23M
9:08 | 7:18/mi
24M
2:50:20
Rank: #5724 (-166)
23M → 24M
8:02 | 8:02/mi
40K· 24.85 mi
2:56:37
Rank: #5673 (+51)
24M → 40K
6:17 | 7:21/mi
25.2M
2:59:23
Rank: #5667 (+6)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
3:06:44
Rank: #5637 (+30)
25.2M → Finish
7:21 | 7:13/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:48
Pace6:51 /mi
2nd Half
Distance13.11 mi
Time1:36:56
Pace7:24 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:4121:146:5021:14
6:50
-
10K
6.21 mi10:45:5442:276:5021:14
6:50
0:00
15K
9.32 mi11:06:551:03:286:4921:01
6:46
-0:04
20K
12.43 mi11:28:351:25:086:5121:40
6:58
+0:12
Half
13.11 mi11:33:151:29:486:514:40
6:50
-0:08
25K
15.53 mi11:50:161:46:496:5317:01
7:01
+0:11
30K
18.64 mi12:12:422:09:156:5622:26
7:13
+0:12
20M
20.00 mi12:22:432:19:166:5810:01
7:22
+0:09
21M
21.00 mi12:31:112:27:447:028:28
8:28
+1:06
35K
21.75 mi12:36:372:33:107:035:26
7:16
-1:12
23M
23.00 mi12:45:452:42:187:039:08
7:18
+0:02
24M
24.00 mi12:53:472:50:207:068:02
8:02
+0:44
40K
24.85 mi13:00:042:56:377:066:17
7:21
-0:41
25.2M
25.20 mi13:02:502:59:237:072:46
8:01
+0:40
Finish
26.22 mi13:10:113:06:447:087:21
7:13
-0:48

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

6:46 /mi

Average Pace

7:08 /mi

Slowest Pace

8:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:48

48% of race

Time at Steady Pace

1:17:40

42% of race

Time at Slower Pace

19:16

10% of race

Average Pace: 7:07 /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 mi10:24:4121:146:5021:14
6:50
#4975
10K
6.21 mi10:45:5442:276:5021:14
6:50
#5239
15K
9.32 mi11:06:551:03:286:4921:01
6:46
#5087
20K
12.43 mi11:28:351:25:086:5121:40
6:58
#5337
Half
13.11 mi11:33:151:29:486:514:40
6:50
#5348
25K
15.53 mi11:50:161:46:496:5317:01
7:01
#5422
30K
18.64 mi12:12:422:09:156:5622:26
7:13
#5441
20M
20.00 mi12:22:432:19:166:5810:01
7:22
#5440
21M
21.00 mi12:31:112:27:447:028:28
8:28
#5620
35K
21.75 mi12:36:372:33:107:035:26
7:16
#5648
23M
23.00 mi12:45:452:42:187:039:08
7:18
#5558
24M
24.00 mi12:53:472:50:207:068:02
8:02
#5724
40K
24.85 mi13:00:042:56:377:066:17
7:21
#5673
25.2M
25.20 mi13:02:502:59:237:072:46
8:01
#5667
Finish
26.22 mi13:10:113:06:447:087:21
7:13
#5637
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4975461746174789(Top 18%)4460(Top 29%)4460(Top 199%)
10K6.21 mi3.10 mi5239-2644846-2294846-2295587(Top 21%)5129(Top 34%)5129(Top 229%)
15K9.32 mi3.11 mi5087+1524720+1264720+1264789(Top 18%)4460(Top 29%)4460(Top 199%)
20K12.43 mi3.11 mi5337-2504939-2194939-2195853(Top 22%)5351(Top 35%)5351(Top 239%)
Half13.11 mi0.68 mi5348-114949-104949-105688(Top 21%)5222(Top 34%)5222(Top 233%)
25K15.53 mi2.42 mi5422-745008-595008-595698(Top 21%)5216(Top 34%)5216(Top 233%)
30K18.64 mi3.11 mi5441-195019-115019-115620(Top 21%)5086(Top 34%)5086(Top 227%)
20M20.00 mi1.36 mi5440+15006+135006+136063(Top 23%)5337(Top 35%)5337(Top 238%)
21M21.00 mi1.00 mi5620-1805153-1475153-14710338(Top 39%)7759(Top 51%)7759(Top 346%)
35K21.75 mi0.75 mi5648-285173-205173-206965(Top 26%)5853(Top 39%)5853(Top 261%)
23M23.00 mi1.25 mi5558+905085+885085+885315(Top 20%)4690(Top 31%)4690(Top 209%)
24M24.00 mi1.00 mi5724-1665200-1155200-11511529(Top 43%)8155(Top 54%)8155(Top 364%)
40K24.85 mi0.85 mi5673+515148+525148+525814(Top 22%)4881(Top 32%)4881(Top 218%)
25.2M25.20 mi0.35 mi5667+65137+115137+116773(Top 25%)5409(Top 36%)5409(Top 241%)
Finish26.22 mi1.02 mi5637+305101+365101+366572(Top 25%)5283(Top 35%)5283(Top 236%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

4789

Males

4460

M40-44

4460

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

5587

Males

5129

M40-44

5129

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

4789

Males

4460

M40-44

4460

15K→20K

9.3 - 12.4 mi

Top 22%
×5stories
+106ft-86ft

Overall

5853

Males

5351

M40-44

5351

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5688

Males

5222

M40-44

5222

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5698

Males

5216

M40-44

5216

25K→30K

15.5 - 18.6 mi

Top 21%
×9stories
+181ft-148ft

Overall

5620

Males

5086

M40-44

5086

30K→20M

18.6 - 20.0 mi

Top 23%
×5stories
+64ft-50ft

Overall

6063

Males

5337

M40-44

5337

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

10338

Males

7759

M40-44

7759

21M→35K

21.0 - 21.8 mi

Top 26%
×7stories
+17ft-86ft

Overall

6965

Males

5853

M40-44

5853

35K→23M

21.8 - 23.0 mi

Top 20%
×5stories
+23ft-63ft

Overall

5315

Males

4690

M40-44

4690

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

11529

Males

8155

M40-44

8155

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5814

Males

4881

M40-44

4881

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6773

Males

5409

M40-44

5409

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2stories
+22ft-21ft

Overall

6572

Males

5283

M40-44

5283

Passing Analysis

Category:
Athletes Passed
961
Passed By
1623
Net Change
-662
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4975
5K → 10K104368-264#4975#5239
10K → 15K20048+152#5239#5087
15K → 20K51301-250#5087#5337
20K → Half1425-11#5337#5348
Half → 25K69143-74#5348#5422
25K → 30K123142-19#5422#5441
30K → 20M5958+1#5441#5440
20M → 21M15195-180#5440#5620
21M → 35K2250-28#5620#5648
35K → 23M12030+90#5648#5558
23M → 24M15181-166#5558#5724
24M → 40K7322+51#5724#5673
40K → 25.2M2115+6#5673#5667
25.2M → Finish7545+30#5667#5637
TOTALS9611623-662
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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