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BOSTON MARATHON 2023

Justin Barth

Bib: 878•M

MT

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 0.9%
Gender (Male)
#0 / 15176
Top 1%
Division (M18-39)
#0 / 5285
Top 4%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:00
Rank: #375
Start → 5K
18:00 | 5:48/mi
10K· 6.21 mi
35:49
Rank: #369 (+6)
5K → 10K
17:49 | 5:44/mi
15K· 9.32 mi
53:43
Rank: #351 (+18)
10K → 15K
17:54 | 5:46/mi
20K· 12.43 mi
1:11:54
Rank: #345 (+6)
15K → 20K
18:11 | 5:51/mi
Half· 13.11 mi
1:15:50
Rank: #344 (+1)
20K → Half
3:56 | 5:46/mi
25K· 15.53 mi
1:29:53
Rank: #331 (+13)
Half → 25K
14:03 | 5:48/mi
30K· 18.64 mi
1:48:11
Rank: #310 (+21)
25K → 30K
18:18 | 5:53/mi
20M
1:56:13
Rank: #309 (+1)
30K → 20M
8:02 | 5:55/mi
21M
2:02:36
Rank: #305 (+4)
20M → 21M
6:23 | 6:23/mi
35K· 21.75 mi
2:06:52
Rank: #301 (+4)
21M → 35K
4:16 | 5:42/mi
23M
2:14:23
Rank: #287 (+14)
35K → 23M
7:31 | 6:00/mi
24M
2:20:06
Rank: #275 (+12)
23M → 24M
5:43 | 5:43/mi
40K· 24.85 mi
2:25:10
Rank: #261 (+14)
24M → 40K
5:04 | 5:56/mi
25.2M
2:27:22
Rank: #254 (+7)
40K → 25.2M
2:12 | 6:23/mi
Finish· 26.22 mi
2:33:12
Rank: #247 (+7)
25.2M → Finish
5:50 | 5:43/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:15:50
Pace5:47 /mi
2nd Half
Distance13.11 mi
Time1:17:22
Pace5:54 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:1118:005:4818:00
5:48
-
10K
6.21 mi10:36:0035:495:4617:49
5:44
-0:04
15K
9.32 mi10:53:5453:435:4617:54
5:46
+0:02
20K
12.43 mi11:12:051:11:545:4718:11
5:51
+0:05
Half
13.11 mi11:16:011:15:505:473:56
5:46
-0:05
25K
15.53 mi11:30:041:29:535:4714:03
5:48
+0:02
30K
18.64 mi11:48:221:48:115:4818:18
5:53
+0:05
20M
20.00 mi11:56:241:56:135:498:02
5:55
+0:02
21M
21.00 mi12:02:472:02:365:506:23
6:23
+0:28
35K
21.75 mi12:07:032:06:525:504:16
5:42
-0:41
23M
23.00 mi12:14:342:14:235:517:31
6:00
+0:18
24M
24.00 mi12:20:172:20:065:505:43
5:43
-0:17
40K
24.85 mi12:25:212:25:105:505:04
5:56
+0:13
25.2M
25.20 mi12:27:332:27:225:512:12
6:23
+0:27
Finish
26.22 mi12:33:232:33:125:515:50
5:43
-0:40

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

5:42 /mi

Average Pace

5:51 /mi

Slowest Pace

6:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:37

94% of race

Time at Steady Pace

8:35

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:51 /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 mi10:18:1118:005:4818:00
5:48
#375
10K
6.21 mi10:36:0035:495:4617:49
5:44
#369
15K
9.32 mi10:53:5453:435:4617:54
5:46
#351
20K
12.43 mi11:12:051:11:545:4718:11
5:51
#345
Half
13.11 mi11:16:011:15:505:473:56
5:46
#344
25K
15.53 mi11:30:041:29:535:4714:03
5:48
#331
30K
18.64 mi11:48:221:48:115:4818:18
5:53
#310
20M
20.00 mi11:56:241:56:135:498:02
5:55
#309
21M
21.00 mi12:02:472:02:365:506:23
6:23
#305
35K
21.75 mi12:07:032:06:525:504:16
5:42
#301
23M
23.00 mi12:14:342:14:235:517:31
6:00
#287
24M
24.00 mi12:20:172:20:065:505:43
5:43
#275
40K
24.85 mi12:25:212:25:105:505:04
5:56
#261
25.2M
25.20 mi12:27:332:27:225:512:12
6:23
#254
Finish
26.22 mi12:33:232:33:125:515:50
5:43
#247
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi375340340333(Top 1%)300(Top 2%)300(Top 6%)
10K6.21 mi3.10 mi369+6334+6334+6352(Top 1%)317(Top 2%)317(Top 6%)
15K9.32 mi3.11 mi351+18318+16318+16333(Top 1%)300(Top 2%)300(Top 6%)
20K12.43 mi3.11 mi345+6312+6312+6354(Top 1%)321(Top 2%)321(Top 6%)
Half13.11 mi0.68 mi344+1312312339(Top 1%)310(Top 2%)310(Top 6%)
25K15.53 mi2.42 mi331+13299+13299+13269(Top 1%)242(Top 2%)242(Top 5%)
30K18.64 mi3.11 mi310+21278+21278+21242(Top 0.9%)218(Top 1%)218(Top 4%)
20M20.00 mi1.36 mi309+1278278260(Top 1.0%)236(Top 2%)236(Top 4%)
21M21.00 mi1.00 mi305+4274+4274+4450(Top 2%)417(Top 3%)417(Top 8%)
35K21.75 mi0.75 mi301+4270+4270+4229(Top 0.9%)206(Top 1%)206(Top 4%)
23M23.00 mi1.25 mi287+14257+13257+13304(Top 1%)279(Top 2%)279(Top 5%)
24M24.00 mi1.00 mi275+12247+10247+10181(Top 0.7%)158(Top 1%)158(Top 3%)
40K24.85 mi0.85 mi261+14234+13234+13238(Top 0.9%)215(Top 1%)215(Top 4%)
25.2M25.20 mi0.35 mi254+7227+7227+7304(Top 1%)283(Top 2%)283(Top 5%)
Finish26.22 mi1.02 mi247+7221+6221+6262(Top 1.0%)245(Top 2%)245(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

333

Males

300

M18-39

300

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

352

Males

317

M18-39

317

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

333

Males

300

M18-39

300

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

354

Males

321

M18-39

321

20K→Half

12.4 - 13.1 mi

Top 1%
×2stories
+19ft-37ft

Overall

339

Males

310

M18-39

310

Half→25K

13.1 - 15.5 mi

Top 1%
×4stories
+66ft-88ft

Overall

269

Males

242

M18-39

242

25K→30K

15.5 - 18.6 mi

Top 0.9%
×9stories
+181ft-148ft

Overall

242

Males

218

M18-39

218

30K→20M

18.6 - 20.0 mi

Top 1.0%
×5stories
+64ft-50ft

Overall

260

Males

236

M18-39

236

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

450

Males

417

M18-39

417

21M→35K

21.0 - 21.8 mi

Top 0.9%
×7stories
+17ft-86ft

Overall

229

Males

206

M18-39

206

35K→23M

21.8 - 23.0 mi

Top 1%
×5stories
+23ft-63ft

Overall

304

Males

279

M18-39

279

23M→24M

23.0 - 24.0 mi

Top 0.7%
×6stories
+12ft-82ft

Overall

181

Males

158

M18-39

158

24M→40K

24.0 - 24.9 mi

Top 0.9%
×1story
+6ft-20ft

Overall

238

Males

215

M18-39

215

40K→25.2M

24.9 - 25.2 mi

Top 1%
×1story
+13ft-16ft

Overall

304

Males

283

M18-39

283

25.2M→Finish

25.2 - 26.2 mi

Top 1.0%
×2stories
+22ft-21ft

Overall

262

Males

245

M18-39

245

Passing Analysis

Category:
Athletes Passed
177
Passed By
49
Net Change
+128
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#375
5K → 10K2418+6#375#369
10K → 15K224+18#369#351
15K → 20K126+6#351#345
20K → Half21+1#345#344
Half → 25K163+13#344#331
25K → 30K265+21#331#310
30K → 20M54+1#310#309
20M → 21M73+4#309#305
21M → 35K51+4#305#301
35K → 23M151+14#301#287
23M → 24M120+12#287#275
24M → 40K151+14#275#261
40K → 25.2M70+7#261#254
25.2M → Finish92+7#254#247
TOTALS17749+128
📊

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