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BOSTON MARATHON 2023

Erik Kastner

Bib: 6644•M

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 10%
Gender (Male)
#0 / 15176
Top 17%
Masters (Masters Men)
#0 / 9891
Top 6%
Division (M40-44)
#0 / 2241
Top 16%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:41
Rank: #1578
Start → 5K
19:41 | 6:20/mi
10K· 6.21 mi
39:37
Rank: #1884 (-306)
5K → 10K
19:56 | 6:25/mi
15K· 9.32 mi
59:39
Rank: #2001 (-117)
10K → 15K
20:02 | 6:27/mi
20K· 12.43 mi
1:20:06
Rank: #2176 (-175)
15K → 20K
20:27 | 6:35/mi
Half· 13.11 mi
1:24:30
Rank: #2187 (-11)
20K → Half
4:24 | 6:27/mi
25K· 15.53 mi
1:40:32
Rank: #2268 (-81)
Half → 25K
16:02 | 6:37/mi
30K· 18.64 mi
2:01:51
Rank: #2406 (-138)
25K → 30K
21:19 | 6:52/mi
20M
2:11:10
Rank: #2421 (-15)
30K → 20M
9:19 | 6:51/mi
21M
2:18:42
Rank: #2507 (-86)
20M → 21M
7:32 | 7:32/mi
35K· 21.75 mi
2:23:45
Rank: #2519 (-12)
21M → 35K
5:03 | 6:45/mi
23M
2:32:28
Rank: #2520 (-1)
35K → 23M
8:43 | 6:58/mi
24M
2:39:18
Rank: #2551 (-31)
23M → 24M
6:50 | 6:50/mi
40K· 24.85 mi
2:45:13
Rank: #2579 (-28)
24M → 40K
5:55 | 6:55/mi
25.2M
2:47:48
Rank: #2596 (-17)
40K → 25.2M
2:35 | 7:29/mi
Finish· 26.22 mi
2:54:47
Rank: #2646 (-50)
25.2M → Finish
6:59 | 6:51/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:30
Pace6:27 /mi
2nd Half
Distance13.11 mi
Time1:30:17
Pace6:53 /mi
📊Positive Split: 6.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:4119:416:2019:41
6:20
-
10K
6.21 mi10:42:3739:376:2319:56
6:25
+0:05
15K
9.32 mi11:02:3959:396:2420:02
6:27
+0:02
20K
12.43 mi11:23:061:20:066:2720:27
6:35
+0:08
Half
13.11 mi11:27:301:24:306:274:24
6:27
-0:08
25K
15.53 mi11:43:321:40:326:2816:02
6:37
+0:10
30K
18.64 mi12:04:512:01:516:3221:19
6:52
+0:15
20M
20.00 mi12:14:102:11:106:339:19
6:51
-0:01
21M
21.00 mi12:21:422:18:426:367:32
7:32
+0:41
35K
21.75 mi12:26:452:23:456:375:03
6:45
-0:47
23M
23.00 mi12:35:282:32:286:388:43
6:58
+0:13
24M
24.00 mi12:42:182:39:186:386:50
6:50
-0:08
40K
24.85 mi12:48:132:45:136:395:55
6:55
+0:05
25.2M
25.20 mi12:50:482:47:486:402:35
7:29
+0:34
Finish
26.22 mi12:57:472:54:476:406:59
6:51
-0:38

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

6:20 /mi

Average Pace

6:40 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:35:57

89% of race

Time at Steady Pace

8:43

5% of race

Time at Slower Pace

10:07

6% of race

Average Pace: 6:40 /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 mi10:22:4119:416:2019:41
6:20
#1578
10K
6.21 mi10:42:3739:376:2319:56
6:25
#1884
15K
9.32 mi11:02:3959:396:2420:02
6:27
#2001
20K
12.43 mi11:23:061:20:066:2720:27
6:35
#2176
Half
13.11 mi11:27:301:24:306:274:24
6:27
#2187
25K
15.53 mi11:43:321:40:326:2816:02
6:37
#2268
30K
18.64 mi12:04:512:01:516:3221:19
6:52
#2406
20M
20.00 mi12:14:102:11:106:339:19
6:51
#2421
21M
21.00 mi12:21:422:18:426:367:32
7:32
#2507
35K
21.75 mi12:26:452:23:456:375:03
6:45
#2519
23M
23.00 mi12:35:282:32:286:388:43
6:58
#2520
24M
24.00 mi12:42:182:39:186:386:50
6:50
#2551
40K
24.85 mi12:48:132:45:136:395:55
6:55
#2579
25.2M
25.20 mi12:50:482:47:486:402:35
7:29
#2596
Finish
26.22 mi12:57:472:54:476:406:59
6:51
#2646
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi1578150315032352(Top 9%)2258(Top 15%)2258(Top 101%)
10K6.21 mi3.10 mi1884-3061804-3011804-3012325(Top 9%)2226(Top 15%)2226(Top 99%)
15K9.32 mi3.11 mi2001-1171916-1121916-1122352(Top 9%)2258(Top 15%)2258(Top 101%)
20K12.43 mi3.11 mi2176-1752084-1682084-1682732(Top 10%)2612(Top 17%)2612(Top 117%)
Half13.11 mi0.68 mi2187-112095-112095-112502(Top 9%)2401(Top 16%)2401(Top 107%)
25K15.53 mi2.42 mi2268-812174-792174-792781(Top 10%)2659(Top 18%)2659(Top 119%)
30K18.64 mi3.11 mi2406-1382306-1322306-1323366(Top 13%)3166(Top 21%)3166(Top 141%)
20M20.00 mi1.36 mi2421-152317-112317-113133(Top 12%)2939(Top 19%)2939(Top 131%)
21M21.00 mi1.00 mi2507-862400-832400-834713(Top 18%)4254(Top 28%)4254(Top 190%)
35K21.75 mi0.75 mi2519-122411-112411-113816(Top 14%)3510(Top 23%)3510(Top 157%)
23M23.00 mi1.25 mi2520-12410+12410+13555(Top 13%)3294(Top 22%)3294(Top 147%)
24M24.00 mi1.00 mi2551-312437-272437-273801(Top 14%)3473(Top 23%)3473(Top 155%)
40K24.85 mi0.85 mi2579-282462-252462-253400(Top 13%)3101(Top 20%)3101(Top 138%)
25.2M25.20 mi0.35 mi2596-172478-162478-163776(Top 14%)3366(Top 22%)3366(Top 150%)
Finish26.22 mi1.02 mi2646-502522-442522-444337(Top 16%)3795(Top 25%)3795(Top 169%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2352

Males

2258

M40-44

2258

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2325

Males

2226

M40-44

2226

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2352

Males

2258

M40-44

2258

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2732

Males

2612

M40-44

2612

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2502

Males

2401

M40-44

2401

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2781

Males

2659

M40-44

2659

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3366

Males

3166

M40-44

3166

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3133

Males

2939

M40-44

2939

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4713

Males

4254

M40-44

4254

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3816

Males

3510

M40-44

3510

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3555

Males

3294

M40-44

3294

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3801

Males

3473

M40-44

3473

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3400

Males

3101

M40-44

3101

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3776

Males

3366

M40-44

3366

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4337

Males

3795

M40-44

3795

Passing Analysis

Category:
Athletes Passed
300
Passed By
1368
Net Change
-1068
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1578
5K → 10K12318-306#1578#1884
10K → 15K29146-117#1884#2001
15K → 20K24199-175#2001#2176
20K → Half819-11#2176#2187
Half → 25K20101-81#2187#2268
25K → 30K31169-138#2268#2406
30K → 20M2944-15#2406#2421
20M → 21M15101-86#2421#2507
21M → 35K1527-12#2507#2519
35K → 23M4445-1#2519#2520
23M → 24M1748-31#2520#2551
24M → 40K2553-28#2551#2579
40K → 25.2M1027-17#2579#2596
25.2M → Finish2171-50#2596#2646
TOTALS3001368-1068
📊

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