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BOSTON MARATHON 2023

Josh Rosenkranz

Bib: 282•M

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 4%
Gender (Male)
#0 / 15176
Top 7%
Division (M18-39)
#0 / 5285
Top 16%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
19:27
Rank: #1293
Start → 5K
19:27 | 6:16/mi
10K· 6.21 mi
38:33
Rank: #1213 (+80)
5K → 10K
19:06 | 6:09/mi
15K· 9.32 mi
58:45
Rank: #1593 (-380)
10K → 15K
20:12 | 6:30/mi
20K· 12.43 mi
1:17:24
Rank: #1227 (+366)
15K → 20K
18:39 | 6:00/mi
Half· 13.11 mi
1:21:39
Rank: #1238 (-11)
20K → Half
4:15 | 6:14/mi
25K· 15.53 mi
1:37:01
Rank: #1274 (-36)
Half → 25K
15:22 | 6:20/mi
30K· 18.64 mi
1:57:16
Rank: #1307 (-33)
25K → 30K
20:15 | 6:31/mi
20M
2:06:05
Rank: #1311 (-4)
30K → 20M
8:49 | 6:29/mi
21M
2:12:53
Rank: #1302 (+9)
20M → 21M
6:48 | 6:48/mi
35K· 21.75 mi
2:17:24
Rank: #1254 (+48)
21M → 35K
4:31 | 6:02/mi
23M
2:25:14
Rank: #1193 (+61)
35K → 23M
7:50 | 6:15/mi
24M
2:31:12
Rank: #1142 (+51)
23M → 24M
5:58 | 5:58/mi
40K· 24.85 mi
2:36:33
Rank: #1119 (+23)
24M → 40K
5:21 | 6:15/mi
25.2M
2:38:51
Rank: #1109 (+10)
40K → 25.2M
2:18 | 6:40/mi
Finish· 26.22 mi
2:45:04
Rank: #1086 (+23)
25.2M → Finish
6:13 | 6:06/mi

Course Map & Elevation

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:39
Pace6:14 /mi
2nd Half
Distance13.11 mi
Time1:23:25
Pace6:22 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:3019:276:1619:27
6:16
-
10K
6.21 mi10:39:3638:336:1219:06
6:09
-0:07
15K
9.32 mi10:59:4858:456:1820:12
6:30
+0:21
20K
12.43 mi11:18:271:17:246:1418:39
6:00
-0:30
Half
13.11 mi11:22:421:21:396:144:15
6:14
+0:14
25K
15.53 mi11:38:041:37:016:1515:22
6:20
+0:06
30K
18.64 mi11:58:191:57:166:1720:15
6:31
+0:11
20M
20.00 mi12:07:082:06:056:188:49
6:29
-0:02
21M
21.00 mi12:13:562:12:536:206:48
6:48
+0:19
35K
21.75 mi12:18:272:17:246:194:31
6:02
-0:46
23M
23.00 mi12:26:172:25:146:197:50
6:15
+0:13
24M
24.00 mi12:32:152:31:126:185:58
5:58
-0:17
40K
24.85 mi12:37:362:36:336:185:21
6:15
+0:17
25.2M
25.20 mi12:39:542:38:516:182:18
6:40
+0:25
Finish
26.22 mi12:46:072:45:046:186:13
6:06
-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

5:58 /mi

Average Pace

6:18 /mi

Slowest Pace

6:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:35:58

94% of race

Time at Steady Pace

9:06

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:18 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:20:3019:276:1619:27
6:16
#1293
10K
6.21 mi10:39:3638:336:1219:06
6:09
#1213
15K
9.32 mi10:59:4858:456:1820:12
6:30
#1593
20K
12.43 mi11:18:271:17:246:1418:39
6:00
#1227
Half
13.11 mi11:22:421:21:396:144:15
6:14
#1238
25K
15.53 mi11:38:041:37:016:1515:22
6:20
#1274
30K
18.64 mi11:58:191:57:166:1720:15
6:31
#1307
20M
20.00 mi12:07:082:06:056:188:49
6:29
#1311
21M
21.00 mi12:13:562:12:536:206:48
6:48
#1302
35K
21.75 mi12:18:272:17:246:194:31
6:02
#1254
23M
23.00 mi12:26:172:25:146:197:50
6:15
#1193
24M
24.00 mi12:32:152:31:126:185:58
5:58
#1142
40K
24.85 mi12:37:362:36:336:185:21
6:15
#1119
25.2M
25.20 mi12:39:542:38:516:182:18
6:40
#1109
Finish
26.22 mi12:46:072:45:046:186:13
6:06
#1086
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1293122712272630(Top 10%)2515(Top 17%)2515(Top 48%)
10K6.21 mi3.10 mi1213+801150+771150+771164(Top 4%)1104(Top 7%)1104(Top 21%)
15K9.32 mi3.11 mi1593-3801522-3721522-3722630(Top 10%)2515(Top 17%)2515(Top 48%)
20K12.43 mi3.11 mi1227+3661169+3531169+353564(Top 2%)524(Top 3%)524(Top 10%)
Half13.11 mi0.68 mi1238-111180-111180-111457(Top 5%)1393(Top 9%)1393(Top 26%)
25K15.53 mi2.42 mi1274-361218-381218-381460(Top 5%)1397(Top 9%)1397(Top 26%)
30K18.64 mi3.11 mi1307-331249-311249-311620(Top 6%)1548(Top 10%)1548(Top 29%)
20M20.00 mi1.36 mi1311-41253-41253-41386(Top 5%)1321(Top 9%)1321(Top 25%)
21M21.00 mi1.00 mi1302+91244+91244+91388(Top 5%)1322(Top 9%)1322(Top 25%)
35K21.75 mi0.75 mi1254+481198+461198+46782(Top 3%)741(Top 5%)741(Top 14%)
23M23.00 mi1.25 mi1193+611140+581140+58737(Top 3%)697(Top 5%)697(Top 13%)
24M24.00 mi1.00 mi1142+511090+501090+50491(Top 2%)464(Top 3%)464(Top 9%)
40K24.85 mi0.85 mi1119+231067+231067+23787(Top 3%)746(Top 5%)746(Top 14%)
25.2M25.20 mi0.35 mi1109+101057+101057+10824(Top 3%)785(Top 5%)785(Top 15%)
Finish26.22 mi1.02 mi1086+231034+231034+23972(Top 4%)926(Top 6%)926(Top 18%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2630

Males

2515

M18-39

2515

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

1164

Males

1104

M18-39

1104

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2630

Males

2515

M18-39

2515

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

564

Males

524

M18-39

524

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1457

Males

1393

M18-39

1393

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1460

Males

1397

M18-39

1397

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1620

Males

1548

M18-39

1548

30K→20M

18.6 - 20.0 mi

Top 5%
×5stories
+64ft-50ft

Overall

1386

Males

1321

M18-39

1321

20M→21M

20.0 - 21.0 mi

Top 5%
×8stories
+106ft-24ft

Overall

1388

Males

1322

M18-39

1322

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

782

Males

741

M18-39

741

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

737

Males

697

M18-39

697

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

491

Males

464

M18-39

464

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

787

Males

746

M18-39

746

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

824

Males

785

M18-39

785

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

972

Males

926

M18-39

926

Passing Analysis

Category:
Athletes Passed
815
Passed By
608
Net Change
+207
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1293
5K → 10K11535+80#1293#1213
10K → 15K3383-380#1213#1593
15K → 20K3660+366#1593#1227
20K → Half112-11#1227#1238
Half → 25K1551-36#1238#1274
25K → 30K3467-33#1274#1307
30K → 20M1923-4#1307#1311
20M → 21M3021+9#1311#1302
21M → 35K480+48#1302#1254
35K → 23M643+61#1254#1193
23M → 24M510+51#1193#1142
24M → 40K285+23#1142#1119
40K → 25.2M133+10#1119#1109
25.2M → Finish285+23#1109#1086
TOTALS815608+207
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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