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BOSTON MARATHON 2023

Cj Albertson

Bib: 27•M

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 0.1%
Gender (Male)
#0 / 15176
Top 0.1%
Division (M18-39)
#0 / 5285
Top 0.2%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
14:18
Rank: #9
Start → 5K
14:18 | 4:36/mi
10K· 6.21 mi
28:59
Rank: #11 (-2)
5K → 10K
14:41 | 4:44/mi
15K· 9.32 mi
43:57
Rank: #8 (+3)
10K → 15K
14:58 | 4:49/mi
20K· 12.43 mi
59:02
Rank: #9 (-1)
15K → 20K
15:05 | 4:51/mi
Half· 13.11 mi
1:02:20
Rank: #9
20K → Half
3:18 | 4:50/mi
25K· 15.53 mi
1:14:25
Rank: #11 (-2)
Half → 25K
12:05 | 4:59/mi
30K· 18.64 mi
1:30:46
Rank: #10 (+1)
25K → 30K
16:21 | 5:16/mi
20M
1:38:02
Rank: #10
30K → 20M
7:16 | 5:21/mi
21M
1:43:46
Rank: #10
20M → 21M
5:44 | 5:44/mi
35K· 21.75 mi
1:47:30
Rank: #12 (-2)
21M → 35K
3:44 | 4:59/mi
23M
1:53:59
Rank: #13 (-1)
35K → 23M
6:29 | 5:11/mi
24M
1:59:05
Rank: #14 (-1)
23M → 24M
5:06 | 5:06/mi
40K· 24.85 mi
2:03:34
Rank: #14
24M → 40K
4:29 | 5:15/mi
25.2M
2:05:31
Rank: #14
40K → 25.2M
1:57 | 5:39/mi
Finish· 26.22 mi
2:10:33
Rank: #12 (+2)
25.2M → Finish
5:02 | 4:56/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:02:20
Pace4:45 /mi
2nd Half
Distance13.11 mi
Time1:08:13
Pace5:12 /mi
📊Positive Split: 9.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi09:51:1914:184:3614:18
4:36
-
10K
6.21 mi10:06:0028:594:4014:41
4:44
+0:08
15K
9.32 mi10:20:5843:574:4314:58
4:49
+0:05
20K
12.43 mi10:36:0359:024:4515:05
4:51
+0:02
Half
13.11 mi10:39:211:02:204:453:18
4:50
-0:01
25K
15.53 mi10:51:261:14:254:4712:05
4:59
+0:09
30K
18.64 mi11:07:471:30:464:5216:21
5:16
+0:17
20M
20.00 mi11:15:031:38:024:547:16
5:21
+0:05
21M
21.00 mi11:20:471:43:464:565:44
5:44
+0:23
35K
21.75 mi11:24:311:47:304:573:44
4:59
-0:45
23M
23.00 mi11:31:001:53:594:576:29
5:11
+0:12
24M
24.00 mi11:36:061:59:054:585:06
5:06
-0:05
40K
24.85 mi11:40:352:03:344:584:29
5:15
+0:09
25.2M
25.20 mi11:42:322:05:314:591:57
5:39
+0:24
Finish
26.22 mi11:47:342:10:334:595:02
4:56
-0:43

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

4:36 /mi

Average Pace

4:59 /mi

Slowest Pace

5:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

43:57

34% of race

Time at Steady Pace

44:20

34% of race

Time at Slower Pace

42:16

32% of race

Average Pace: 4:59 /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 mi09:51:1914:184:3614:18
4:36
#9
10K
6.21 mi10:06:0028:594:4014:41
4:44
#11
15K
9.32 mi10:20:5843:574:4314:58
4:49
#8
20K
12.43 mi10:36:0359:024:4515:05
4:51
#9
Half
13.11 mi10:39:211:02:204:453:18
4:50
#9
25K
15.53 mi10:51:261:14:254:4712:05
4:59
#11
30K
18.64 mi11:07:471:30:464:5216:21
5:16
#10
20M
20.00 mi11:15:031:38:024:547:16
5:21
#10
21M
21.00 mi11:20:471:43:464:565:44
5:44
#10
35K
21.75 mi11:24:311:47:304:573:44
4:59
#12
23M
23.00 mi11:31:001:53:594:576:29
5:11
#13
24M
24.00 mi11:36:061:59:054:585:06
5:06
#14
40K
24.85 mi11:40:352:03:344:584:29
5:15
#14
25.2M
25.20 mi11:42:322:05:314:591:57
5:39
#14
Finish
26.22 mi11:47:342:10:334:595:02
4:56
#12
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi9991(Top 0.004%)1(Top 0.007%)1(Top 0.02%)
10K6.21 mi3.10 mi11-211-211-211(Top 0.04%)11(Top 0.07%)11(Top 0.2%)
15K9.32 mi3.11 mi8+38+38+31(Top 0.004%)1(Top 0.007%)1(Top 0.02%)
20K12.43 mi3.11 mi9-19-19-110(Top 0.04%)10(Top 0.07%)10(Top 0.2%)
Half13.11 mi0.68 mi9998(Top 0.03%)8(Top 0.05%)8(Top 0.2%)
25K15.53 mi2.42 mi11-211-211-211(Top 0.04%)11(Top 0.07%)11(Top 0.2%)
30K18.64 mi3.11 mi10+110+110+120(Top 0.08%)20(Top 0.1%)20(Top 0.4%)
20M20.00 mi1.36 mi10101020(Top 0.08%)20(Top 0.1%)20(Top 0.4%)
21M21.00 mi1.00 mi10101032(Top 0.1%)23(Top 0.2%)23(Top 0.4%)
35K21.75 mi0.75 mi12-212-212-213(Top 0.05%)13(Top 0.09%)13(Top 0.2%)
23M23.00 mi1.25 mi13-113-113-111(Top 0.04%)11(Top 0.07%)11(Top 0.2%)
24M24.00 mi1.00 mi14-114-114-116(Top 0.06%)12(Top 0.08%)12(Top 0.2%)
40K24.85 mi0.85 mi14141418(Top 0.07%)13(Top 0.09%)13(Top 0.2%)
25.2M25.20 mi0.35 mi14141420(Top 0.08%)16(Top 0.1%)16(Top 0.3%)
Finish26.22 mi1.02 mi12+212+212+28(Top 0.03%)7(Top 0.05%)7(Top 0.1%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 0.004%
×21stories
+97ft-345ft

Overall

1

Males

1

M18-39

1

5K→10K

3.1 - 6.2 mi

Top 0.04%
×5stories
+79ft-138ft

Overall

11

Males

11

M18-39

11

10K→15K

6.2 - 9.3 mi

Top 0.004%
×3stories
+67ft-78ft

Overall

1

Males

1

M18-39

1

15K→20K

9.3 - 12.4 mi

Top 0.04%
×5stories
+106ft-86ft

Overall

10

Males

10

M18-39

10

20K→Half

12.4 - 13.1 mi

Top 0.03%
×2stories
+19ft-37ft

Overall

8

Males

8

M18-39

8

Half→25K

13.1 - 15.5 mi

Top 0.04%
×4stories
+66ft-88ft

Overall

11

Males

11

M18-39

11

25K→30K

15.5 - 18.6 mi

Top 0.08%
×9stories
+181ft-148ft

Overall

20

Males

20

M18-39

20

30K→20M

18.6 - 20.0 mi

Top 0.08%
×5stories
+64ft-50ft

Overall

20

Males

20

M18-39

20

20M→21M

20.0 - 21.0 mi

Top 0.1%
×8stories
+106ft-24ft

Overall

32

Males

23

M18-39

23

21M→35K

21.0 - 21.8 mi

Top 0.05%
×7stories
+17ft-86ft

Overall

13

Males

13

M18-39

13

35K→23M

21.8 - 23.0 mi

Top 0.04%
×5stories
+23ft-63ft

Overall

11

Males

11

M18-39

11

23M→24M

23.0 - 24.0 mi

Top 0.06%
×6stories
+12ft-82ft

Overall

16

Males

12

M18-39

12

24M→40K

24.0 - 24.9 mi

Top 0.07%
×1story
+6ft-20ft

Overall

18

Males

13

M18-39

13

40K→25.2M

24.9 - 25.2 mi

Top 0.08%
×1story
+13ft-16ft

Overall

20

Males

16

M18-39

16

25.2M→Finish

25.2 - 26.2 mi

Top 0.03%
×2stories
+22ft-21ft

Overall

8

Males

7

M18-39

7

Passing Analysis

Category:
Athletes Passed
6
Passed By
9
Net Change
-3
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9
5K → 10K02-2#9#11
10K → 15K30+3#11#8
15K → 20K01-1#8#9
20K → Half000#9#9
Half → 25K02-2#9#11
25K → 30K10+1#11#10
30K → 20M000#10#10
20M → 21M000#10#10
21M → 35K02-2#10#12
35K → 23M01-1#12#13
23M → 24M01-1#13#14
24M → 40K000#14#14
40K → 25.2M000#14#14
25.2M → Finish20+2#14#12
TOTALS69-3
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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