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BOSTON MARATHON 2023

Mark Castleberry

GA

Bib: 12390 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 26%
Gender (Male)
#0 / 15176
Top 39%
Masters (Masters Men)
#0 / 9891
Top 26%
Division (M45-49)
#0 / 2252
Top 33%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:25/mi
23:04
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:07/mi
45:12
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:04/mi
1:07:08
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:12/mi
1:29:29
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:11/mi
1:35:04
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:16/mi
1:52:40
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:30/mi
2:15:58
↑ 181↓ 1480.2%
138 ft elev
20M
7:33/mi
2:26:13
↑ 64↓ 500.2%
148 ft elev
21M
7:48/mi
2:34:01
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:12/mi
2:39:24
↑ 17↓ 861.7%
156 ft elev
23M
7:22/mi
2:48:38
↑ 23↓ 630.6%
116 ft elev
24M
7:06/mi
2:55:44
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:09/mi
3:01:51
↓ 200.3%
20 ft elev
25.2M
7:44/mi
3:04:31
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
6:56/mi
3:11:35
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:35:047:15 /mi⚡ faster
2nd Half
1:36:317:22 /mi+1.5%
Positive split — 1.5% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:2923:047:2523:04
7:25
-
10K
6.21 mi11:12:3745:127:1622:08
7:07
-0:18
15K
9.32 mi11:34:331:07:087:1221:56
7:04
-0:03
20K
12.43 mi11:56:541:29:297:1222:21
7:12
+0:08
Half
13.11 mi12:02:291:35:047:155:35
8:11
+0:59
25K
15.53 mi12:20:051:52:407:1517:36
7:16
-0:55
30K
18.64 mi12:43:232:15:587:1823:18
7:30
+0:14
20M
20.00 mi12:53:382:26:137:1910:15
7:33
+0:03
21M
21.00 mi13:01:262:34:017:207:48
7:48
+0:15
35K
21.75 mi13:06:492:39:247:205:23
7:12
-0:36
23M
23.00 mi13:16:032:48:387:209:14
7:22
+0:10
24M
24.00 mi13:23:092:55:447:197:06
7:06
-0:16
40K
24.85 mi13:29:163:01:517:196:07
7:09
+0:03
25.2M
25.20 mi13:31:563:04:317:192:40
7:44
+0:35
Finish
26.22 mi13:39:003:11:357:197:04
6:56
-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

6:56 /mi

Average Pace

7:19 /mi

Slowest Pace

8:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

2:55:32

92% of race

Time at Steady Pace

10:28

5% of race

Time at Slower Pace

5:35

3% of race

Average Pace: 7:18 /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 mi10:50:2923:047:2523:04
7:25
#9006
10K
6.21 mi11:12:3745:127:1622:08
7:07
#8275
15K
9.32 mi11:34:331:07:087:1221:56
7:04
#7767
20K
12.43 mi11:56:541:29:297:1222:21
7:12
#7546
Half
13.11 mi12:02:291:35:047:155:35
8:11
#7921
25K
15.53 mi12:20:051:52:407:1517:36
7:16
#7733
30K
18.64 mi12:43:232:15:587:1823:18
7:30
#7602
20M
20.00 mi12:53:382:26:137:1910:15
7:33
#7520
21M
21.00 mi13:01:262:34:017:207:48
7:48
#7420
35K
21.75 mi13:06:492:39:247:205:23
7:12
#7365
23M
23.00 mi13:16:032:48:387:209:14
7:22
#7221
24M
24.00 mi13:23:092:55:447:197:06
7:06
#7101
40K
24.85 mi13:29:163:01:517:196:07
7:09
#6969
25.2M
25.20 mi13:31:563:04:317:192:40
7:44
#6909
Finish
26.22 mi13:39:003:11:357:197:04
6:56
#6798
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi900675937593690261686168
10K6.21 mi3.10 mi8275+7317133+4607133+460757966596659
15K9.32 mi3.11 mi7767+5086803+3306803+330690261686168
20K12.43 mi3.11 mi7546+2216640+1636640+163705162496249
Half13.11 mi0.68 mi7921-3756881-2416881-241156031051110511
25K15.53 mi2.42 mi7733+1886744+1376744+137700261566156
30K18.64 mi3.11 mi7602+1316626+1186626+118720261956195
20M20.00 mi1.36 mi7520+826544+826544+82705960116011
21M21.00 mi1.00 mi7420+1006458+866458+86617153195319
35K21.75 mi0.75 mi7365+556417+416417+41648255625562
23M23.00 mi1.25 mi7221+1446302+1156302+115572349994999
24M24.00 mi1.00 mi7101+1206203+996203+99520845814581
40K24.85 mi0.85 mi6969+1326090+1136090+113465641074107
25.2M25.20 mi0.35 mi6909+606037+536037+53504643234323
Finish26.22 mi1.02 mi6798+1115957+805957+80483441574157

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21story building
+97ft-345ft

Overall

6902

Males

6168

M45-49

6168

5K→10K

3.1 - 6.2 mi

Top 28%
×5story building
+79ft-138ft

Overall

7579

Males

6659

M45-49

6659

10K→15K

6.2 - 9.3 mi

Top 26%
×3story building
+67ft-78ft

Overall

6902

Males

6168

M45-49

6168

15K→20K

9.3 - 12.4 mi

Top 26%
×5story building
+106ft-86ft

Overall

7051

Males

6249

M45-49

6249

20K→Half

12.4 - 13.1 mi

Top 59%
×2story building
+19ft-37ft

Overall

15603

Males

10511

M45-49

10511

Half→25K

13.1 - 15.5 mi

Top 26%
×4story building
+66ft-88ft

Overall

7002

Males

6156

M45-49

6156

25K→30K

15.5 - 18.6 mi

Top 27%
×9story building
+181ft-148ft

Overall

7202

Males

6195

M45-49

6195

30K→20M

18.6 - 20.0 mi

Top 27%
×5story building
+64ft-50ft

Overall

7059

Males

6011

M45-49

6011

20M→21M

20.0 - 21.0 mi

Top 23%
×8story building
+106ft-24ft

Overall

6171

Males

5319

M45-49

5319

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6482

Males

5562

M45-49

5562

35K→23M

21.8 - 23.0 mi

Top 21%
×5story building
+23ft-63ft

Overall

5723

Males

4999

M45-49

4999

23M→24M

23.0 - 24.0 mi

Top 20%
×6story building
+12ft-82ft

Overall

5208

Males

4581

M45-49

4581

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4656

Males

4107

M45-49

4107

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5046

Males

4323

M45-49

4323

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2story building
+22ft-21ft

Overall

4834

Males

4157

M45-49

4157

Passing Analysis

Category:
Athletes Passed
2844
Passed By
636
Net Change
+2208
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9006
5K → 10K77544+731#9006#8275
10K → 15K5179+508#8275#7767
15K → 20K25029+221#7767#7546
20K → Half1376-375#7546#7921
Half → 25K20113+188#7921#7733
25K → 30K19968+131#7733#7602
30K → 20M11735+82#7602#7520
20M → 21M12020+100#7520#7420
21M → 35K6510+55#7420#7365
35K → 23M1539+144#7365#7221
23M → 24M1277+120#7221#7101
24M → 40K1386+132#7101#6969
40K → 25.2M600+60#6969#6909
25.2M → Finish12110+111#6909#6798
TOTALS2844636+2208

Passing Charts

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