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BOSTON MARATHON 2023

Jonathan Sandberg

Bib: 13037•M

NH

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 28%
Gender (Male)
#0 / 15176
Top 42%
Masters (Masters Men)
#0 / 9891
Top 29%
Division (M45-49)
#0 / 2252
Top 39%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:06
Rank: #9087
Start → 5K
23:06 | 7:26/mi
10K· 6.21 mi
46:05
Rank: #9294 (-207)
5K → 10K
22:59 | 7:24/mi
15K· 9.32 mi
1:09:09
Rank: #9340 (-46)
10K → 15K
23:04 | 7:25/mi
20K· 12.43 mi
1:32:54
Rank: #9610 (-270)
15K → 20K
23:45 | 7:39/mi
Half· 13.11 mi
1:37:51
Rank: #9535 (+75)
20K → Half
4:57 | 7:15/mi
25K· 15.53 mi
1:55:58
Rank: #9346 (+189)
Half → 25K
18:07 | 7:28/mi
30K· 18.64 mi
2:18:36
Rank: #8643 (+703)
25K → 30K
22:38 | 7:17/mi
20M
2:28:40
Rank: #8418 (+225)
30K → 20M
10:04 | 7:24/mi
21M
2:36:11
Rank: #8168 (+250)
20M → 21M
7:31 | 7:31/mi
35K· 21.75 mi
2:41:30
Rank: #8058 (+110)
21M → 35K
5:19 | 7:06/mi
23M
2:50:38
Rank: #7836 (+222)
35K → 23M
9:08 | 7:18/mi
24M
2:58:03
Rank: #7776 (+60)
23M → 24M
7:25 | 7:25/mi
40K· 24.85 mi
3:04:11
Rank: #7616 (+160)
24M → 40K
6:08 | 7:10/mi
25.2M
3:06:53
Rank: #7575 (+41)
40K → 25.2M
2:42 | 7:50/mi
Finish· 26.22 mi
3:14:01
Rank: #7454 (+121)
25.2M → Finish
7:08 | 7:00/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:37:51
Pace7:28 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:36:10
Pace7:20 /mi
📊Negative Split: 1.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:5123:067:2623:06
7:26
-
10K
6.21 mi11:19:5046:057:2522:59
7:24
-0:02
15K
9.32 mi11:42:541:09:097:2523:04
7:25
+0:01
20K
12.43 mi12:06:391:32:547:2923:45
7:39
+0:14
Half
13.11 mi12:11:361:37:517:284:57
7:15
-0:24
25K
15.53 mi12:29:431:55:587:2818:07
7:28
+0:13
30K
18.64 mi12:52:212:18:367:2622:38
7:17
-0:11
20M
20.00 mi13:02:252:28:407:2610:04
7:24
+0:07
21M
21.00 mi13:09:562:36:117:267:31
7:31
+0:07
35K
21.75 mi13:15:152:41:307:265:19
7:06
-0:25
23M
23.00 mi13:24:232:50:387:259:08
7:18
+0:12
24M
24.00 mi13:31:482:58:037:257:25
7:25
+0:07
40K
24.85 mi13:37:563:04:117:256:08
7:10
-0:15
25.2M
25.20 mi13:40:383:06:537:252:42
7:50
+0:40
Finish
26.22 mi13:47:463:14:017:247:08
7:00
-0:50

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

7:00 /mi

Average Pace

7:24 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:11:19

99% of race

Time at Steady Pace

2:42

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:24 /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 mi10:56:5123:067:2623:06
7:26
#9087
10K
6.21 mi11:19:5046:057:2522:59
7:24
#9294
15K
9.32 mi11:42:541:09:097:2523:04
7:25
#9340
20K
12.43 mi12:06:391:32:547:2923:45
7:39
#9610
Half
13.11 mi12:11:361:37:517:284:57
7:15
#9535
25K
15.53 mi12:29:431:55:587:2818:07
7:28
#9346
30K
18.64 mi12:52:212:18:367:2622:38
7:17
#8643
20M
20.00 mi13:02:252:28:407:2610:04
7:24
#8418
21M
21.00 mi13:09:562:36:117:267:31
7:31
#8168
35K
21.75 mi13:15:152:41:307:265:19
7:06
#8058
23M
23.00 mi13:24:232:50:387:259:08
7:18
#7836
24M
24.00 mi13:31:482:58:037:257:25
7:25
#7776
40K
24.85 mi13:37:563:04:117:256:08
7:10
#7616
25.2M
25.20 mi13:40:383:06:537:252:42
7:50
#7575
Finish
26.22 mi13:47:463:14:017:247:08
7:00
#7454
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi9087764776479540(Top 36%)7883(Top 52%)7883(Top 350%)
10K6.21 mi3.10 mi9294-2077748-1017748-1019581(Top 36%)7909(Top 52%)7909(Top 351%)
15K9.32 mi3.11 mi9340-467770-227770-229540(Top 36%)7883(Top 52%)7883(Top 350%)
20K12.43 mi3.11 mi9610-2707925-1557925-15510441(Top 39%)8305(Top 55%)8305(Top 369%)
Half13.11 mi0.68 mi9535+757879+467879+468200(Top 31%)7014(Top 46%)7014(Top 311%)
25K15.53 mi2.42 mi9346+1897750+1297750+1298549(Top 32%)7166(Top 47%)7166(Top 318%)
30K18.64 mi3.11 mi8643+7037278+4727278+4725943(Top 22%)5336(Top 35%)5336(Top 237%)
20M20.00 mi1.36 mi8418+2257117+1617117+1616230(Top 23%)5471(Top 36%)5471(Top 243%)
21M21.00 mi1.00 mi8168+2506940+1776940+1774678(Top 18%)4244(Top 28%)4244(Top 188%)
35K21.75 mi0.75 mi8058+1106861+796861+795963(Top 22%)5216(Top 34%)5216(Top 232%)
23M23.00 mi1.25 mi7836+2226700+1616700+1615299(Top 20%)4686(Top 31%)4686(Top 208%)
24M24.00 mi1.00 mi7776+606639+616639+617149(Top 27%)5799(Top 38%)5799(Top 258%)
40K24.85 mi0.85 mi7616+1606528+1116528+1114761(Top 18%)4188(Top 28%)4188(Top 186%)
25.2M25.20 mi0.35 mi7575+416486+426486+425549(Top 21%)4648(Top 31%)4648(Top 206%)
Finish26.22 mi1.02 mi7454+1216384+1026384+1025220(Top 20%)4428(Top 29%)4428(Top 197%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

9540

Males

7883

M45-49

7883

5K→10K

3.1 - 6.2 mi

Top 36%
×5stories
+79ft-138ft

Overall

9581

Males

7909

M45-49

7909

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

9540

Males

7883

M45-49

7883

15K→20K

9.3 - 12.4 mi

Top 39%
×5stories
+106ft-86ft

Overall

10441

Males

8305

M45-49

8305

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8200

Males

7014

M45-49

7014

Half→25K

13.1 - 15.5 mi

Top 32%
×4stories
+66ft-88ft

Overall

8549

Males

7166

M45-49

7166

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

5943

Males

5336

M45-49

5336

30K→20M

18.6 - 20.0 mi

Top 23%
×5stories
+64ft-50ft

Overall

6230

Males

5471

M45-49

5471

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4678

Males

4244

M45-49

4244

21M→35K

21.0 - 21.8 mi

Top 22%
×7stories
+17ft-86ft

Overall

5963

Males

5216

M45-49

5216

35K→23M

21.8 - 23.0 mi

Top 20%
×5stories
+23ft-63ft

Overall

5299

Males

4686

M45-49

4686

23M→24M

23.0 - 24.0 mi

Top 27%
×6stories
+12ft-82ft

Overall

7149

Males

5799

M45-49

5799

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4761

Males

4188

M45-49

4188

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5549

Males

4648

M45-49

4648

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5220

Males

4428

M45-49

4428

Passing Analysis

Category:
Athletes Passed
2666*
Passed By
1033
Net Change
+1633
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9087
5K → 10K186393-207#9087#9294
10K → 15K134180-46#9294#9340
15K → 20K67337-270#9340#9610
20K → Half794+75#9610#9535
Half → 25K22031+189#9535#9346
25K → 30K704*1+703#9346#8643
30K → 20M23611+225#8643#8418
20M → 21M2522+250#8418#8168
21M → 35K1166+110#8168#8058
35K → 23M2253+222#8058#7836
23M → 24M9737+60#7836#7776
24M → 40K1633+160#7776#7616
40K → 25.2M476+41#7616#7575
25.2M → Finish14019+121#7575#7454
TOTALS2666*1033+1633

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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