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BOSTON MARATHON 2023

Knut Vassbo

Bib: 10429•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 40%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 44%
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:50
Rank: #8449
Start → 5K
22:50 | 7:21/mi
10K· 6.21 mi
46:21
Rank: #9647 (-1198)
5K → 10K
23:31 | 7:34/mi
15K· 9.32 mi
1:10:10
Rank: #10308 (-661)
10K → 15K
23:49 | 7:40/mi
20K· 12.43 mi
1:34:27
Rank: #10708 (-400)
15K → 20K
24:17 | 7:49/mi
Half· 13.11 mi
1:39:44
Rank: #10783 (-75)
20K → Half
5:17 | 7:45/mi
25K· 15.53 mi
1:58:46
Rank: #10864 (-81)
Half → 25K
19:02 | 7:51/mi
30K· 18.64 mi
2:23:54
Rank: #10917 (-53)
25K → 30K
25:08 | 8:05/mi
20M
2:34:47
Rank: #10833 (+84)
30K → 20M
10:53 | 8:01/mi
21M
2:43:14
Rank: #10797 (+36)
20M → 21M
8:27 | 8:27/mi
35K· 21.75 mi
2:48:59
Rank: #10738 (+59)
21M → 35K
5:45 | 7:41/mi
23M
2:59:05
Rank: #10682 (+56)
35K → 23M
10:06 | 8:04/mi
24M
3:06:56
Rank: #10659 (+23)
23M → 24M
7:51 | 7:51/mi
40K· 24.85 mi
3:13:54
Rank: #10635 (+24)
24M → 40K
6:58 | 8:09/mi
25.2M
3:16:53
Rank: #10627 (+8)
40K → 25.2M
2:59 | 8:39/mi
Finish· 26.22 mi
3:24:57
Rank: #10627
25.2M → Finish
8:04 | 7:55/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:44
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time1:45:13
Pace8:02 /mi
📊Positive Split: 5.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:0822:507:2122:50
7:21
-
10K
6.21 mi11:12:3946:217:2823:31
7:34
+0:13
15K
9.32 mi11:36:281:10:107:3223:49
7:40
+0:06
20K
12.43 mi12:00:451:34:277:3624:17
7:49
+0:09
Half
13.11 mi12:06:021:39:447:365:17
7:45
-0:04
25K
15.53 mi12:25:041:58:467:3919:02
7:51
+0:06
30K
18.64 mi12:50:122:23:547:4325:08
8:05
+0:14
20M
20.00 mi13:01:052:34:477:4410:53
8:01
-0:04
21M
21.00 mi13:09:322:43:147:468:27
8:27
+0:26
35K
21.75 mi13:15:172:48:597:465:45
7:41
-0:46
23M
23.00 mi13:25:232:59:057:4710:06
8:04
+0:23
24M
24.00 mi13:33:143:06:567:477:51
7:51
-0:13
40K
24.85 mi13:40:123:13:547:486:58
8:09
+0:18
25.2M
25.20 mi13:43:113:16:537:492:59
8:39
+0:30
Finish
26.22 mi13:51:153:24:577:498:04
7:55
-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

7:21 /mi

Average Pace

7:49 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:33

91% of race

Time at Steady Pace

18:24

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:49 /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 mi10:49:0822:507:2122:50
7:21
#8449
10K
6.21 mi11:12:3946:217:2823:31
7:34
#9647
15K
9.32 mi11:36:281:10:107:3223:49
7:40
#10308
20K
12.43 mi12:00:451:34:277:3624:17
7:49
#10708
Half
13.11 mi12:06:021:39:447:365:17
7:45
#10783
25K
15.53 mi12:25:041:58:467:3919:02
7:51
#10864
30K
18.64 mi12:50:122:23:547:4325:08
8:05
#10917
20M
20.00 mi13:01:052:34:477:4410:53
8:01
#10833
21M
21.00 mi13:09:322:43:147:468:27
8:27
#10797
35K
21.75 mi13:15:172:48:597:465:45
7:41
#10738
23M
23.00 mi13:25:232:59:057:4710:06
8:04
#10682
24M
24.00 mi13:33:143:06:567:477:51
7:51
#10659
40K
24.85 mi13:40:123:13:547:486:58
8:09
#10635
25.2M
25.20 mi13:43:113:16:537:492:59
8:39
#10627
Finish
26.22 mi13:51:153:24:577:498:04
7:55
#10627
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi84497268726811534(Top 43%)8867(Top 58%)8867(Top 394%)
10K6.21 mi3.10 mi9647-11987952-6847952-68411031(Top 41%)8691(Top 57%)8691(Top 386%)
15K9.32 mi3.11 mi10308-6618335-3838335-38311534(Top 43%)8867(Top 58%)8867(Top 394%)
20K12.43 mi3.11 mi10708-4008500-1658500-16511856(Top 45%)8958(Top 59%)8958(Top 398%)
Half13.11 mi0.68 mi10783-758533-338533-3312170(Top 46%)9124(Top 60%)9124(Top 405%)
25K15.53 mi2.42 mi10864-818570-378570-3711493(Top 43%)8708(Top 57%)8708(Top 387%)
30K18.64 mi3.11 mi10917-538544+268544+2611561(Top 43%)8610(Top 57%)8610(Top 382%)
20M20.00 mi1.36 mi10833+848470+748470+7410312(Top 39%)7925(Top 52%)7925(Top 352%)
21M21.00 mi1.00 mi10797+368428+428428+4210163(Top 38%)7693(Top 51%)7693(Top 342%)
35K21.75 mi0.75 mi10738+598377+518377+519832(Top 37%)7545(Top 50%)7545(Top 335%)
23M23.00 mi1.25 mi10682+568320+578320+5710223(Top 38%)7604(Top 50%)7604(Top 338%)
24M24.00 mi1.00 mi10659+238290+308290+3010134(Top 38%)7468(Top 49%)7468(Top 332%)
40K24.85 mi0.85 mi10635+248244+468244+4611003(Top 41%)7842(Top 52%)7842(Top 348%)
25.2M25.20 mi0.35 mi10627+88228+168228+1610400(Top 39%)7498(Top 49%)7498(Top 333%)
Finish26.22 mi1.02 mi106278210+188210+1811484(Top 43%)8032(Top 53%)8032(Top 357%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21stories
+97ft-345ft

Overall

11534

Males

8867

M45-49

8867

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

11031

Males

8691

M45-49

8691

10K→15K

6.2 - 9.3 mi

Top 43%
×3stories
+67ft-78ft

Overall

11534

Males

8867

M45-49

8867

15K→20K

9.3 - 12.4 mi

Top 45%
×5stories
+106ft-86ft

Overall

11856

Males

8958

M45-49

8958

20K→Half

12.4 - 13.1 mi

Top 46%
×2stories
+19ft-37ft

Overall

12170

Males

9124

M45-49

9124

Half→25K

13.1 - 15.5 mi

Top 43%
×4stories
+66ft-88ft

Overall

11493

Males

8708

M45-49

8708

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

11561

Males

8610

M45-49

8610

30K→20M

18.6 - 20.0 mi

Top 39%
×5stories
+64ft-50ft

Overall

10312

Males

7925

M45-49

7925

20M→21M

20.0 - 21.0 mi

Top 38%
×8stories
+106ft-24ft

Overall

10163

Males

7693

M45-49

7693

21M→35K

21.0 - 21.8 mi

Top 37%
×7stories
+17ft-86ft

Overall

9832

Males

7545

M45-49

7545

35K→23M

21.8 - 23.0 mi

Top 38%
×5stories
+23ft-63ft

Overall

10223

Males

7604

M45-49

7604

23M→24M

23.0 - 24.0 mi

Top 38%
×6stories
+12ft-82ft

Overall

10134

Males

7468

M45-49

7468

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

11003

Males

7842

M45-49

7842

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

10400

Males

7498

M45-49

7498

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

11484

Males

8032

M45-49

8032

Passing Analysis

Category:
Athletes Passed
1075*
Passed By
3251
Net Change
-2178
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8449
5K → 10K301228-1198#8449#9647
10K → 15K39698-661#9647#10308
15K → 20K51451-400#10308#10708
20K → Half883-75#10708#10783
Half → 25K101182-81#10783#10864
25K → 30K174227-53#10864#10917
30K → 20M130*46+84#10917#10833
20M → 21M8852+36#10833#10797
21M → 35K7718+59#10797#10738
35K → 23M11458+56#10738#10682
23M → 24M8158+23#10682#10659
24M → 40K7652+24#10659#10635
40K → 25.2M3527+8#10635#10627
25.2M → Finish71710#10627#10627
TOTALS1075*3251-2178

* 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