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BOSTON MARATHON 2023

Alexander Clark

Bib: 1819•M

NY

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 46%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:02
Rank: #2019
Start → 5K
6:27/mi
20:02 split
10K· 6.21 mi
40:30
Rank: #2624 (-605)
5K → 10K
6:35/mi
20:28 split
15K· 9.32 mi
1:00:37
Rank: #2549 (+75)
10K → 15K
6:28/mi
20:07 split
20K· 12.43 mi
1:20:48
Rank: #2463 (+86)
15K → 20K
6:30/mi
20:11 split
Half· 13.11 mi
1:25:13
Rank: #2463
20K → Half
6:28/mi
4:25 split
25K· 15.53 mi
1:41:03
Rank: #2437 (+26)
Half → 25K
6:32/mi
15:50 split
30K· 18.64 mi
2:01:53
Rank: #2417 (+20)
25K → 30K
6:42/mi
20:50 split
20M
2:11:03
Rank: #2397 (+20)
30K → 20M
6:45/mi
9:10 split
21M
2:18:10
Rank: #2386 (+11)
20M → 21M
7:07/mi
7:07 split
35K· 21.75 mi
2:23:16
Rank: #2419 (-33)
21M → 35K
6:49/mi
5:06 split
23M
2:32:18
Rank: #2483 (-64)
35K → 23M
7:13/mi
9:02 split
24M
2:39:48
Rank: #2699 (-216)
23M → 24M
7:30/mi
7:30 split
40K· 24.85 mi
2:46:26
Rank: #2897 (-198)
24M → 40K
7:45/mi
6:38 split
25.2M
2:49:33
Rank: #3036 (-139)
40K → 25.2M
9:02/mi
3:07 split
Finish· 26.22 mi
2:58:12
Rank: #3554 (-518)
25.2M → Finish
8:29/mi
8:39 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:13
Pace6:30 /mi
2nd Half
Distance13.11 mi
Time1:32:59
Pace7:06 /mi
📊Positive Split: 9.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:3820:026:2720:02
6:27
-
10K
6.21 mi10:41:0640:306:3120:28
6:35
+0:08
15K
9.32 mi11:01:131:00:376:3020:07
6:28
-0:07
20K
12.43 mi11:21:241:20:486:3020:11
6:30
+0:02
Half
13.11 mi11:25:491:25:136:304:25
6:28
-0:02
25K
15.53 mi11:41:391:41:036:3015:50
6:32
+0:04
30K
18.64 mi12:02:292:01:536:3220:50
6:42
+0:10
20M
20.00 mi12:11:392:11:036:339:10
6:45
+0:03
21M
21.00 mi12:18:462:18:106:357:07
7:07
+0:22
35K
21.75 mi12:23:522:23:166:355:06
6:49
-0:18
23M
23.00 mi12:32:542:32:186:379:02
7:13
+0:24
24M
24.00 mi12:40:242:39:486:407:30
7:30
+0:17
40K
24.85 mi12:47:022:46:266:426:38
7:45
+0:15
25.2M
25.20 mi12:50:092:49:336:443:07
9:02
+1:17
Finish
26.22 mi12:58:482:58:126:488:39
8:29
-0:33

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

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:23:16

80% of race

Time at Slower Pace

34:56

20% of race

Average Pace: 6:48 /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 mi10:20:3820:026:2720:02
6:27
#2019
10K
6.21 mi10:41:0640:306:3120:28
6:35
#2624
15K
9.32 mi11:01:131:00:376:3020:07
6:28
#2549
20K
12.43 mi11:21:241:20:486:3020:11
6:30
#2463
Half
13.11 mi11:25:491:25:136:304:25
6:28
#2463
25K
15.53 mi11:41:391:41:036:3015:50
6:32
#2437
30K
18.64 mi12:02:292:01:536:3220:50
6:42
#2417
20M
20.00 mi12:11:392:11:036:339:10
6:45
#2397
21M
21.00 mi12:18:462:18:106:357:07
7:07
#2386
35K
21.75 mi12:23:522:23:166:355:06
6:49
#2419
23M
23.00 mi12:32:542:32:186:379:02
7:13
#2483
24M
24.00 mi12:40:242:39:486:407:30
7:30
#2699
40K
24.85 mi12:47:022:46:266:426:38
7:45
#2897
25.2M
25.20 mi12:50:092:49:336:443:07
9:02
#3036
Finish
26.22 mi12:58:482:58:126:488:39
8:29
#3554
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2019192619262494(Top 9%)2393(Top 16%)2393(Top 45%)
10K6.21 mi3.10 mi2624-6052504-5782504-5783409(Top 13%)3238(Top 21%)3238(Top 61%)
15K9.32 mi3.11 mi2549+752436+682436+682494(Top 9%)2393(Top 16%)2393(Top 45%)
20K12.43 mi3.11 mi2463+862358+782358+782273(Top 9%)2178(Top 14%)2178(Top 41%)
Half13.11 mi0.68 mi24632360-22360-22671(Top 10%)2565(Top 17%)2565(Top 49%)
25K15.53 mi2.42 mi2437+262336+242336+242342(Top 9%)2244(Top 15%)2244(Top 42%)
30K18.64 mi3.11 mi2417+202316+202316+202432(Top 9%)2316(Top 15%)2316(Top 44%)
20M20.00 mi1.36 mi2397+202296+202296+202521(Top 9%)2392(Top 16%)2392(Top 45%)
21M21.00 mi1.00 mi2386+112287+92287+92699(Top 10%)2535(Top 17%)2535(Top 48%)
35K21.75 mi0.75 mi2419-332316-292316-294258(Top 16%)3893(Top 26%)3893(Top 74%)
23M23.00 mi1.25 mi2483-642376-602376-604841(Top 18%)4340(Top 29%)4340(Top 82%)
24M24.00 mi1.00 mi2699-2162575-1992575-1997656(Top 29%)6094(Top 40%)6094(Top 115%)
40K24.85 mi0.85 mi2897-1982753-1782753-1788316(Top 31%)6422(Top 42%)6422(Top 122%)
25.2M25.20 mi0.35 mi3036-1392875-1222875-12212623(Top 47%)8536(Top 56%)8536(Top 162%)
Finish26.22 mi1.02 mi3554-5183346-4713346-47115303(Top 57%)9844(Top 65%)9844(Top 186%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21story building
+97ft-345ft

Overall

2494

Males

2393

M18-39

2393

5K→10K

3.1 - 6.2 mi

Top 13%
×5story building
+79ft-138ft

Overall

3409

Males

3238

M18-39

3238

10K→15K

6.2 - 9.3 mi

Top 9%
×3story building
+67ft-78ft

Overall

2494

Males

2393

M18-39

2393

15K→20K

9.3 - 12.4 mi

Top 9%
×5story building
+106ft-86ft

Overall

2273

Males

2178

M18-39

2178

20K→Half

12.4 - 13.1 mi

Top 10%
×2story building
+19ft-37ft

Overall

2671

Males

2565

M18-39

2565

Half→25K

13.1 - 15.5 mi

Top 9%
×4story building
+66ft-88ft

Overall

2342

Males

2244

M18-39

2244

25K→30K

15.5 - 18.6 mi

Top 9%
×9story building
+181ft-148ft

Overall

2432

Males

2316

M18-39

2316

30K→20M

18.6 - 20.0 mi

Top 9%
×5story building
+64ft-50ft

Overall

2521

Males

2392

M18-39

2392

20M→21M

20.0 - 21.0 mi

Top 10%
×8story building
+106ft-24ft

Overall

2699

Males

2535

M18-39

2535

21M→35K

21.0 - 21.8 mi

Top 16%
×7story building
+17ft-86ft

Overall

4258

Males

3893

M18-39

3893

35K→23M

21.8 - 23.0 mi

Top 18%
×5story building
+23ft-63ft

Overall

4841

Males

4340

M18-39

4340

23M→24M

23.0 - 24.0 mi

Top 29%
×6story building
+12ft-82ft

Overall

7656

Males

6094

M18-39

6094

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8316

Males

6422

M18-39

6422

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12623

Males

8536

M18-39

8536

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

15303

Males

9844

M18-39

9844

Passing Analysis

Category:
Athletes Passed
530
Passed By
2065
Net Change
-1535
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2019
5K → 10K10615-605#2019#2624
10K → 15K12146+75#2624#2549
15K → 20K11529+86#2549#2463
20K → Half10100#2463#2463
Half → 25K6438+26#2463#2437
25K → 30K7656+20#2437#2417
30K → 20M4424+20#2417#2397
20M → 21M3625+11#2397#2386
21M → 35K1447-33#2386#2419
35K → 23M2589-64#2419#2483
23M → 24M4220-216#2483#2699
24M → 40K7205-198#2699#2897
40K → 25.2M2141-139#2897#3036
25.2M → Finish2520-518#3036#3554
TOTALS5302065-1535
📊

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