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BOSTON MARATHON 2023

Milton Olsoff

Bib: 30424•M

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:40
Rank: #21285
Start → 5K
9:14/mi
28:40 split
10K· 6.21 mi
56:30
Rank: #21020 (+265)
5K → 10K
8:58/mi
27:50 split
15K· 9.32 mi
1:23:57
Rank: #20598 (+422)
10K → 15K
8:50/mi
27:27 split
20K· 12.43 mi
1:51:58
Rank: #20410 (+188)
15K → 20K
9:01/mi
28:01 split
Half· 13.11 mi
1:57:54
Rank: #20330 (+80)
20K → Half
8:42/mi
5:56 split
25K· 15.53 mi
2:19:29
Rank: #20018 (+312)
Half → 25K
8:54/mi
21:35 split
30K· 18.64 mi
2:47:40
Rank: #19571 (+447)
25K → 30K
9:04/mi
28:11 split
20M
2:59:37
Rank: #19272 (+299)
30K → 20M
8:48/mi
11:57 split
21M
3:08:32
Rank: #18953 (+319)
20M → 21M
8:55/mi
8:55 split
35K· 21.75 mi
3:14:43
Rank: #18773 (+180)
21M → 35K
8:16/mi
6:11 split
23M
3:25:26
Rank: #18470 (+303)
35K → 23M
8:34/mi
10:43 split
24M
3:33:58
Rank: #18315 (+155)
23M → 24M
8:32/mi
8:32 split
40K· 24.85 mi
3:41:09
Rank: #18139 (+176)
24M → 40K
8:24/mi
7:11 split
25.2M
3:44:17
Rank: #18066 (+73)
40K → 25.2M
9:05/mi
3:08 split
Finish· 26.22 mi
3:52:48
Rank: #17937 (+129)
25.2M → Finish
8:21/mi
8:31 split

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:57:54
Pace9:00 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:54:54
Pace8:46 /mi
📊Negative Split: 2.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:5528:409:1428:40
9:14
-
10K
6.21 mi12:15:4556:309:0627:50
8:58
-0:16
15K
9.32 mi12:43:121:23:579:0027:27
8:50
-0:08
20K
12.43 mi13:11:131:51:589:0128:01
9:01
+0:11
Half
13.11 mi13:17:091:57:549:005:56
8:42
-0:19
25K
15.53 mi13:38:442:19:298:5921:35
8:54
+0:12
30K
18.64 mi14:06:552:47:409:0028:11
9:04
+0:10
20M
20.00 mi14:18:522:59:378:5911:57
8:48
-0:16
21M
21.00 mi14:27:473:08:328:598:55
8:55
+0:07
35K
21.75 mi14:33:583:14:438:576:11
8:16
-0:39
23M
23.00 mi14:44:413:25:268:5610:43
8:34
+0:18
24M
24.00 mi14:53:133:33:588:558:32
8:32
-0:02
40K
24.85 mi15:00:243:41:098:547:11
8:24
-0:08
25.2M
25.20 mi15:03:323:44:178:543:08
9:05
+0:41
Finish
26.22 mi15:12:033:52:488:538:31
8:21
-0:44

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

8:16 /mi

Average Pace

8:53 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:24:08

88% of race

Time at Steady Pace

28:40

12% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:53 /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 mi11:47:5528:409:1428:40
9:14
#21285
10K
6.21 mi12:15:4556:309:0627:50
8:58
#21020
15K
9.32 mi12:43:121:23:579:0027:27
8:50
#20598
20K
12.43 mi13:11:131:51:589:0128:01
9:01
#20410
Half
13.11 mi13:17:091:57:549:005:56
8:42
#20330
25K
15.53 mi13:38:442:19:298:5921:35
8:54
#20018
30K
18.64 mi14:06:552:47:409:0028:11
9:04
#19571
20M
20.00 mi14:18:522:59:378:5911:57
8:48
#19272
21M
21.00 mi14:27:473:08:328:598:55
8:55
#18953
35K
21.75 mi14:33:583:14:438:576:11
8:16
#18773
23M
23.00 mi14:44:413:25:268:5610:43
8:34
#18470
24M
24.00 mi14:53:133:33:588:558:32
8:32
#18315
40K
24.85 mi15:00:243:41:098:547:11
8:24
#18139
25.2M
25.20 mi15:03:323:44:178:543:08
9:05
#18066
Finish
26.22 mi15:12:033:52:488:538:31
8:21
#17937
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21285127461274619690(Top 74%)12165(Top 80%)12165(Top 230%)
10K6.21 mi3.10 mi21020+26512665+8112665+8120705(Top 78%)12592(Top 83%)12592(Top 238%)
15K9.32 mi3.11 mi20598+42212503+16212503+16219690(Top 74%)12165(Top 80%)12165(Top 230%)
20K12.43 mi3.11 mi20410+18812440+6312440+6319777(Top 74%)12211(Top 80%)12211(Top 231%)
Half13.11 mi0.68 mi20330+8012407+3312407+3318872(Top 71%)11837(Top 78%)11837(Top 224%)
25K15.53 mi2.42 mi20018+31212279+12812279+12818456(Top 69%)11615(Top 77%)11615(Top 220%)
30K18.64 mi3.11 mi19571+44712079+20012079+20017537(Top 66%)11139(Top 73%)11139(Top 211%)
20M20.00 mi1.36 mi19272+29911936+14311936+14315395(Top 58%)10172(Top 67%)10172(Top 192%)
21M21.00 mi1.00 mi18953+31911789+14711789+14712938(Top 49%)9018(Top 59%)9018(Top 171%)
35K21.75 mi0.75 mi18773+18011712+7711712+7713899(Top 52%)9388(Top 62%)9388(Top 178%)
23M23.00 mi1.25 mi18470+30311566+14611566+14613578(Top 51%)9186(Top 61%)9186(Top 174%)
24M24.00 mi1.00 mi18315+15511484+8211484+8214678(Top 55%)9611(Top 63%)9611(Top 182%)
40K24.85 mi0.85 mi18139+17611399+8511399+8512712(Top 48%)8647(Top 57%)8647(Top 164%)
25.2M25.20 mi0.35 mi18066+7311361+3811361+3812999(Top 49%)8779(Top 58%)8779(Top 166%)
Finish26.22 mi1.02 mi17937+12911300+6111300+6114451(Top 54%)9471(Top 62%)9471(Top 179%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21stories
+97ft-345ft

Overall

19690

Males

12165

M18-39

12165

5K→10K

3.1 - 6.2 mi

Top 78%
×5stories
+79ft-138ft

Overall

20705

Males

12592

M18-39

12592

10K→15K

6.2 - 9.3 mi

Top 74%
×3stories
+67ft-78ft

Overall

19690

Males

12165

M18-39

12165

15K→20K

9.3 - 12.4 mi

Top 74%
×5stories
+106ft-86ft

Overall

19777

Males

12211

M18-39

12211

20K→Half

12.4 - 13.1 mi

Top 71%
×2stories
+19ft-37ft

Overall

18872

Males

11837

M18-39

11837

Half→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

18456

Males

11615

M18-39

11615

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

17537

Males

11139

M18-39

11139

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

15395

Males

10172

M18-39

10172

20M→21M

20.0 - 21.0 mi

Top 49%
×8stories
+106ft-24ft

Overall

12938

Males

9018

M18-39

9018

21M→35K

21.0 - 21.8 mi

Top 52%
×7stories
+17ft-86ft

Overall

13899

Males

9388

M18-39

9388

35K→23M

21.8 - 23.0 mi

Top 51%
×5stories
+23ft-63ft

Overall

13578

Males

9186

M18-39

9186

23M→24M

23.0 - 24.0 mi

Top 55%
×6stories
+12ft-82ft

Overall

14678

Males

9611

M18-39

9611

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12712

Males

8647

M18-39

8647

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

12999

Males

8779

M18-39

8779

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2stories
+22ft-21ft

Overall

14451

Males

9471

M18-39

9471

Passing Analysis

Category:
Athletes Passed
3667
Passed By
319
Net Change
+3348
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21285
5K → 10K418153+265#21285#21020
10K → 15K46947+422#21020#20598
15K → 20K26173+188#20598#20410
20K → Half822+80#20410#20330
Half → 25K32715+312#20330#20018
25K → 30K4569+447#20018#19571
30K → 20M3001+299#19571#19272
20M → 21M3201+319#19272#18953
21M → 35K1822+180#18953#18773
35K → 23M3030+303#18773#18470
23M → 24M1583+155#18470#18315
24M → 40K1782+176#18315#18139
40K → 25.2M752+73#18139#18066
25.2M → Finish1389+129#18066#17937
TOTALS3667319+3348
📊

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