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BOSTON MARATHON 2023

Jón Sturluson

Bib: 5708•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 3%
Gender (Male)
#0 / 15176
Top 5%
Division (M18-39)
#0 / 5285
Top 12%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:30
Rank: #1350
Start → 5K
19:30 | 6:17/mi
10K· 6.21 mi
38:55
Rank: #1419 (-69)
5K → 10K
19:25 | 6:15/mi
15K· 9.32 mi
58:15
Rank: #1368 (+51)
10K → 15K
19:20 | 6:13/mi
20K· 12.43 mi
1:17:34
Rank: #1277 (+91)
15K → 20K
19:19 | 6:13/mi
Half· 13.11 mi
1:21:48
Rank: #1275 (+2)
20K → Half
4:14 | 6:12/mi
25K· 15.53 mi
1:36:47
Rank: #1212 (+63)
Half → 25K
14:59 | 6:11/mi
30K· 18.64 mi
1:56:14
Rank: #1128 (+84)
25K → 30K
19:27 | 6:16/mi
20M
2:04:41
Rank: #1073 (+55)
30K → 20M
8:27 | 6:13/mi
21M
2:11:06
Rank: #1013 (+60)
20M → 21M
6:25 | 6:25/mi
35K· 21.75 mi
2:15:37
Rank: #991 (+22)
21M → 35K
4:31 | 6:02/mi
23M
2:23:24
Rank: #958 (+33)
35K → 23M
7:47 | 6:13/mi
24M
2:29:18
Rank: #911 (+47)
23M → 24M
5:54 | 5:54/mi
40K· 24.85 mi
2:34:30
Rank: #882 (+29)
24M → 40K
5:12 | 6:05/mi
25.2M
2:36:44
Rank: #863 (+19)
40K → 25.2M
2:14 | 6:29/mi
Finish· 26.22 mi
2:42:34
Rank: #821 (+42)
25.2M → Finish
5:50 | 5:43/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:21:48
Pace6:14 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:20:46
Pace6:10 /mi
📊Negative Split: 1.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:0019:306:1719:30
6:17
-
10K
6.21 mi10:41:2538:556:1619:25
6:15
-0:02
15K
9.32 mi11:00:4558:156:1519:20
6:13
-0:02
20K
12.43 mi11:20:041:17:346:1419:19
6:13
0:00
Half
13.11 mi11:24:181:21:486:144:14
6:12
-0:01
25K
15.53 mi11:39:171:36:476:1414:59
6:11
-0:01
30K
18.64 mi11:58:441:56:146:1419:27
6:16
+0:05
20M
20.00 mi12:07:112:04:416:148:27
6:13
-0:03
21M
21.00 mi12:13:362:11:066:156:25
6:25
+0:12
35K
21.75 mi12:18:072:15:376:144:31
6:02
-0:23
23M
23.00 mi12:25:542:23:246:147:47
6:13
+0:11
24M
24.00 mi12:31:482:29:186:135:54
5:54
-0:19
40K
24.85 mi12:37:002:34:306:135:12
6:05
+0:11
25.2M
25.20 mi12:39:142:36:446:132:14
6:29
+0:24
Finish
26.22 mi12:45:042:42:346:125:50
5:43
-0:46

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

5:43 /mi

Average Pace

6:12 /mi

Slowest Pace

6:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:55

95% of race

Time at Steady Pace

8:39

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:12 /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 mi10:22:0019:306:1719:30
6:17
#1350
10K
6.21 mi10:41:2538:556:1619:25
6:15
#1419
15K
9.32 mi11:00:4558:156:1519:20
6:13
#1368
20K
12.43 mi11:20:041:17:346:1419:19
6:13
#1277
Half
13.11 mi11:24:181:21:486:144:14
6:12
#1275
25K
15.53 mi11:39:171:36:476:1414:59
6:11
#1212
30K
18.64 mi11:58:441:56:146:1419:27
6:16
#1128
20M
20.00 mi12:07:112:04:416:148:27
6:13
#1073
21M
21.00 mi12:13:362:11:066:156:25
6:25
#1013
35K
21.75 mi12:18:072:15:376:144:31
6:02
#991
23M
23.00 mi12:25:542:23:246:147:47
6:13
#958
24M
24.00 mi12:31:482:29:186:135:54
5:54
#911
40K
24.85 mi12:37:002:34:306:135:12
6:05
#882
25.2M
25.20 mi12:39:142:36:446:132:14
6:29
#863
Finish
26.22 mi12:45:042:42:346:125:50
5:43
#821
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1350128212821317(Top 5%)1255(Top 8%)1255(Top 24%)
10K6.21 mi3.10 mi1419-691353-711353-711538(Top 6%)1470(Top 10%)1470(Top 28%)
15K9.32 mi3.11 mi1368+511303+501303+501317(Top 5%)1255(Top 8%)1255(Top 24%)
20K12.43 mi3.11 mi1277+911216+871216+871091(Top 4%)1040(Top 7%)1040(Top 20%)
Half13.11 mi0.68 mi1275+2121612161341(Top 5%)1281(Top 8%)1281(Top 24%)
25K15.53 mi2.42 mi1212+631157+591157+59940(Top 4%)892(Top 6%)892(Top 17%)
30K18.64 mi3.11 mi1128+841076+811076+81807(Top 3%)767(Top 5%)767(Top 15%)
20M20.00 mi1.36 mi1073+551022+541022+54692(Top 3%)655(Top 4%)655(Top 12%)
21M21.00 mi1.00 mi1013+60963+59963+59521(Top 2%)487(Top 3%)487(Top 9%)
35K21.75 mi0.75 mi991+22943+20943+20766(Top 3%)725(Top 5%)725(Top 14%)
23M23.00 mi1.25 mi958+33911+32911+32645(Top 2%)609(Top 4%)609(Top 12%)
24M24.00 mi1.00 mi911+47864+47864+47395(Top 1%)369(Top 2%)369(Top 7%)
40K24.85 mi0.85 mi882+29835+29835+29458(Top 2%)431(Top 3%)431(Top 8%)
25.2M25.20 mi0.35 mi863+19817+18817+18470(Top 2%)444(Top 3%)444(Top 8%)
Finish26.22 mi1.02 mi821+42777+40777+40272(Top 1%)255(Top 2%)255(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1317

Males

1255

M18-39

1255

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1538

Males

1470

M18-39

1470

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1317

Males

1255

M18-39

1255

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

1091

Males

1040

M18-39

1040

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1341

Males

1281

M18-39

1281

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

940

Males

892

M18-39

892

25K→30K

15.5 - 18.6 mi

Top 3%
×9stories
+181ft-148ft

Overall

807

Males

767

M18-39

767

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

692

Males

655

M18-39

655

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

521

Males

487

M18-39

487

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

766

Males

725

M18-39

725

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

645

Males

609

M18-39

609

23M→24M

23.0 - 24.0 mi

Top 1%
×6stories
+12ft-82ft

Overall

395

Males

369

M18-39

369

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

458

Males

431

M18-39

431

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

470

Males

444

M18-39

444

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2stories
+22ft-21ft

Overall

272

Males

255

M18-39

255

Passing Analysis

Category:
Athletes Passed
703
Passed By
174
Net Change
+529
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1350
5K → 10K49118-69#1350#1419
10K → 15K7221+51#1419#1368
15K → 20K10211+91#1368#1277
20K → Half97+2#1277#1275
Half → 25K641+63#1275#1212
25K → 30K939+84#1212#1128
30K → 20M550+55#1128#1073
20M → 21M611+60#1073#1013
21M → 35K242+22#1013#991
35K → 23M330+33#991#958
23M → 24M470+47#958#911
24M → 40K290+29#911#882
40K → 25.2M201+19#882#863
25.2M → Finish453+42#863#821
TOTALS703174+529
📊

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