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BOSTON MARATHON 2023

Clayton Kirk

Bib: 6583•M

AZ

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 22%
Division (M18-39)
#0 / 5285
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:20
Rank: #2529
Start → 5K
20:20 | 6:33/mi
10K· 6.21 mi
40:23
Rank: #2491 (+38)
5K → 10K
20:03 | 6:27/mi
15K· 9.32 mi
1:00:48
Rank: #2664 (-173)
10K → 15K
20:25 | 6:34/mi
20K· 12.43 mi
1:21:21
Rank: #2705 (-41)
15K → 20K
20:33 | 6:37/mi
Half· 13.11 mi
1:25:52
Rank: #2751 (-46)
20K → Half
4:31 | 6:37/mi
25K· 15.53 mi
1:42:00
Rank: #2783 (-32)
Half → 25K
16:08 | 6:39/mi
30K· 18.64 mi
2:03:27
Rank: #2874 (-91)
25K → 30K
21:27 | 6:54/mi
20M
2:12:51
Rank: #2890 (-16)
30K → 20M
9:24 | 6:55/mi
21M
2:20:20
Rank: #2974 (-84)
20M → 21M
7:29 | 7:29/mi
35K· 21.75 mi
2:25:19
Rank: #2966 (+8)
21M → 35K
4:59 | 6:40/mi
23M
2:34:18
Rank: #3051 (-85)
35K → 23M
8:59 | 7:10/mi
24M
2:41:15
Rank: #3099 (-48)
23M → 24M
6:57 | 6:57/mi
40K· 24.85 mi
2:47:35
Rank: #3215 (-116)
24M → 40K
6:20 | 7:24/mi
25.2M
2:50:21
Rank: #3271 (-56)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
2:57:57
Rank: #3476 (-205)
25.2M → Finish
7:36 | 7:27/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:52
Pace6:33 /mi
2nd Half
Distance13.11 mi
Time1:32:05
Pace7:01 /mi
📊Positive Split: 7.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3720:206:3320:20
6:33
-
10K
6.21 mi10:43:4040:236:3020:03
6:27
-0:06
15K
9.32 mi11:04:051:00:486:3120:25
6:34
+0:07
20K
12.43 mi11:24:381:21:216:3320:33
6:37
+0:03
Half
13.11 mi11:29:091:25:526:334:31
6:37
0:00
25K
15.53 mi11:45:171:42:006:3416:08
6:39
+0:02
30K
18.64 mi12:06:442:03:276:3721:27
6:54
+0:15
20M
20.00 mi12:16:082:12:516:399:24
6:55
+0:01
21M
21.00 mi12:23:372:20:206:417:29
7:29
+0:34
35K
21.75 mi12:28:362:25:196:414:59
6:40
-0:49
23M
23.00 mi12:37:352:34:186:438:59
7:10
+0:30
24M
24.00 mi12:44:322:41:156:436:57
6:57
-0:13
40K
24.85 mi12:50:522:47:356:456:20
7:24
+0:27
25.2M
25.20 mi12:53:382:50:216:462:46
8:01
+0:37
Finish
26.22 mi13:01:142:57:576:487:36
7:27
-0:34

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

6:27 /mi

Average Pace

6:48 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:59

60% of race

Time at Steady Pace

37:48

21% of race

Time at Slower Pace

33:10

19% of race

Average Pace: 6:47 /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 mi10:23:3720:206:3320:20
6:33
#2529
10K
6.21 mi10:43:4040:236:3020:03
6:27
#2491
15K
9.32 mi11:04:051:00:486:3120:25
6:34
#2664
20K
12.43 mi11:24:381:21:216:3320:33
6:37
#2705
Half
13.11 mi11:29:091:25:526:334:31
6:37
#2751
25K
15.53 mi11:45:171:42:006:3416:08
6:39
#2783
30K
18.64 mi12:06:442:03:276:3721:27
6:54
#2874
20M
20.00 mi12:16:082:12:516:399:24
6:55
#2890
21M
21.00 mi12:23:372:20:206:417:29
7:29
#2974
35K
21.75 mi12:28:362:25:196:414:59
6:40
#2966
23M
23.00 mi12:37:352:34:186:438:59
7:10
#3051
24M
24.00 mi12:44:322:41:156:436:57
6:57
#3099
40K
24.85 mi12:50:522:47:356:456:20
7:24
#3215
25.2M
25.20 mi12:53:382:50:216:462:46
8:01
#3271
Finish
26.22 mi13:01:142:57:576:487:36
7:27
#3476
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2529241424143072(Top 12%)2930(Top 19%)2930(Top 55%)
10K6.21 mi3.10 mi2491+382376+382376+382517(Top 9%)2406(Top 16%)2406(Top 46%)
15K9.32 mi3.11 mi2664-1732545-1692545-1693072(Top 12%)2930(Top 19%)2930(Top 55%)
20K12.43 mi3.11 mi2705-412584-392584-392967(Top 11%)2826(Top 19%)2826(Top 53%)
Half13.11 mi0.68 mi2751-462630-462630-463496(Top 13%)3306(Top 22%)3306(Top 63%)
25K15.53 mi2.42 mi2783-322660-302660-303039(Top 11%)2897(Top 19%)2897(Top 55%)
30K18.64 mi3.11 mi2874-912749-892749-893675(Top 14%)3449(Top 23%)3449(Top 65%)
20M20.00 mi1.36 mi2890-162761-122761-123517(Top 13%)3282(Top 22%)3282(Top 62%)
21M21.00 mi1.00 mi2974-842834-732834-734468(Top 17%)4070(Top 27%)4070(Top 77%)
35K21.75 mi0.75 mi2966+82824+102824+103344(Top 13%)3114(Top 21%)3114(Top 59%)
23M23.00 mi1.25 mi3051-852897-732897-734647(Top 17%)4190(Top 28%)4190(Top 79%)
24M24.00 mi1.00 mi3099-482939-422939-424398(Top 17%)3973(Top 26%)3973(Top 75%)
40K24.85 mi0.85 mi3215-1163042-1033042-1036078(Top 23%)5052(Top 33%)5052(Top 96%)
25.2M25.20 mi0.35 mi3271-563094-523094-526515(Top 24%)5241(Top 35%)5241(Top 99%)
Finish26.22 mi1.02 mi3476-2053276-1823276-1828164(Top 31%)6237(Top 41%)6237(Top 118%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3072

Males

2930

M18-39

2930

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2517

Males

2406

M18-39

2406

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3072

Males

2930

M18-39

2930

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

2967

Males

2826

M18-39

2826

20K→Half

12.4 - 13.1 mi

Top 13%
×2stories
+19ft-37ft

Overall

3496

Males

3306

M18-39

3306

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

3039

Males

2897

M18-39

2897

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3675

Males

3449

M18-39

3449

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3517

Males

3282

M18-39

3282

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4468

Males

4070

M18-39

4070

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3344

Males

3114

M18-39

3114

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4647

Males

4190

M18-39

4190

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4398

Males

3973

M18-39

3973

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6078

Males

5052

M18-39

5052

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6515

Males

5241

M18-39

5241

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2stories
+22ft-21ft

Overall

8164

Males

6237

M18-39

6237

Passing Analysis

Category:
Athletes Passed
505
Passed By
1452
Net Change
-947
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2529
5K → 10K158120+38#2529#2491
10K → 15K16189-173#2491#2664
15K → 20K59100-41#2664#2705
20K → Half652-46#2705#2751
Half → 25K4577-32#2751#2783
25K → 30K52143-91#2783#2874
30K → 20M3046-16#2874#2890
20M → 21M17101-84#2890#2974
21M → 35K3830+8#2974#2966
35K → 23M29114-85#2966#3051
23M → 24M2775-48#3051#3099
24M → 40K13129-116#3099#3215
40K → 25.2M763-56#3215#3271
25.2M → Finish8213-205#3271#3476
TOTALS5051452-947
📊

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