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BOSTON MARATHON 2023

Megan Velzen

Bib: 17026•F

MI

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 46%
Gender (Female)
#0 / 11423
Top 29%
Division (F18-39)
#0 / 4884
Top 47%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:24
Rank: #9927
Start → 5K
23:24 | 7:32/mi
10K· 6.21 mi
46:55
Rank: #10485 (-558)
5K → 10K
23:31 | 7:34/mi
15K· 9.32 mi
1:10:31
Rank: #10633 (-148)
10K → 15K
23:36 | 7:36/mi
20K· 12.43 mi
1:34:29
Rank: #10742 (-109)
15K → 20K
23:58 | 7:43/mi
Half· 13.11 mi
1:39:43
Rank: #10777 (-35)
20K → Half
5:14 | 7:40/mi
25K· 15.53 mi
1:58:36
Rank: #10781 (-4)
Half → 25K
18:53 | 7:47/mi
30K· 18.64 mi
2:23:24
Rank: #10712 (+69)
25K → 30K
24:48 | 7:59/mi
20M
2:34:43
Rank: #10804 (-92)
30K → 20M
11:19 | 8:20/mi
21M
2:44:21
Rank: #11223 (-419)
20M → 21M
9:38 | 9:38/mi
35K· 21.75 mi
2:50:49
Rank: #11443 (-220)
21M → 35K
6:28 | 8:39/mi
23M
3:02:01
Rank: #11768 (-325)
35K → 23M
11:12 | 8:57/mi
24M
3:10:37
Rank: #11929 (-161)
23M → 24M
8:36 | 8:36/mi
40K· 24.85 mi
3:18:10
Rank: #12077 (-148)
24M → 40K
7:33 | 8:50/mi
25.2M
3:21:34
Rank: #12161 (-84)
40K → 25.2M
3:24 | 9:52/mi
Finish· 26.22 mi
3:30:23
Rank: #12379 (-218)
25.2M → Finish
8:49 | 8:39/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:43
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time1:50:40
Pace8:27 /mi
📊Positive Split: 11.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:5223:247:3223:24
7:32
-
10K
6.21 mi11:37:2346:557:3323:31
7:34
+0:02
15K
9.32 mi12:00:591:10:317:3423:36
7:36
+0:02
20K
12.43 mi12:24:571:34:297:3623:58
7:43
+0:07
Half
13.11 mi12:30:111:39:437:365:14
7:40
-0:03
25K
15.53 mi12:49:041:58:367:3818:53
7:47
+0:07
30K
18.64 mi13:13:522:23:247:4224:48
7:59
+0:12
20M
20.00 mi13:25:112:34:437:4411:19
8:20
+0:21
21M
21.00 mi13:34:492:44:217:509:38
9:38
+1:18
35K
21.75 mi13:41:172:50:497:516:28
8:39
-0:59
23M
23.00 mi13:52:293:02:017:5511:12
8:57
+0:18
24M
24.00 mi14:01:053:10:377:578:36
8:36
-0:21
40K
24.85 mi14:08:383:18:107:587:33
8:50
+0:14
25.2M
25.20 mi14:12:023:21:348:003:24
9:52
+1:02
Finish
26.22 mi14:20:513:30:238:028:49
8:39
-1:13

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

7:32 /mi

Average Pace

8:02 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:58:36

56% of race

Time at Steady Pace

1:00:00

29% of race

Time at Slower Pace

31:47

15% of race

Average Pace: 8:01 /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 mi11:13:5223:247:3223:24
7:32
#9927
10K
6.21 mi11:37:2346:557:3323:31
7:34
#10485
15K
9.32 mi12:00:591:10:317:3423:36
7:36
#10633
20K
12.43 mi12:24:571:34:297:3623:58
7:43
#10742
Half
13.11 mi12:30:111:39:437:365:14
7:40
#10777
25K
15.53 mi12:49:041:58:367:3818:53
7:47
#10781
30K
18.64 mi13:13:522:23:247:4224:48
7:59
#10712
20M
20.00 mi13:25:112:34:437:4411:19
8:20
#10804
21M
21.00 mi13:34:492:44:217:509:38
9:38
#11223
35K
21.75 mi13:41:172:50:497:516:28
8:39
#11443
23M
23.00 mi13:52:293:02:017:5511:12
8:57
#11768
24M
24.00 mi14:01:053:10:377:578:36
8:36
#11929
40K
24.85 mi14:08:383:18:107:587:33
8:50
#12077
25.2M
25.20 mi14:12:023:21:348:003:24
9:52
#12161
Finish
26.22 mi14:20:513:30:238:028:49
8:39
#12379
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi99271829182911007(Top 41%)2351(Top 21%)2351(Top 48%)
10K6.21 mi3.10 mi10485-5582065-2362065-23611066(Top 42%)2353(Top 21%)2353(Top 48%)
15K9.32 mi3.11 mi10633-1482133-682133-6811007(Top 41%)2351(Top 21%)2351(Top 48%)
20K12.43 mi3.11 mi10742-1092214-812214-8111051(Top 42%)2433(Top 21%)2433(Top 50%)
Half13.11 mi0.68 mi10777-352235-212235-2111731(Top 44%)2775(Top 24%)2775(Top 57%)
25K15.53 mi2.42 mi10781-42242-72242-711026(Top 41%)2503(Top 22%)2503(Top 51%)
30K18.64 mi3.11 mi10712+692259-172259-1710775(Top 40%)2536(Top 22%)2536(Top 52%)
20M20.00 mi1.36 mi10804-922334-752334-7512547(Top 47%)3604(Top 32%)3604(Top 74%)
21M21.00 mi1.00 mi11223-4192579-2452579-24516582(Top 62%)5952(Top 52%)5952(Top 122%)
35K21.75 mi0.75 mi11443-2202712-1332712-13316096(Top 60%)5735(Top 50%)5735(Top 117%)
23M23.00 mi1.25 mi11768-3252917-2052917-20515769(Top 59%)5607(Top 49%)5607(Top 115%)
24M24.00 mi1.00 mi11929-1613037-1203037-12015058(Top 57%)5253(Top 46%)5253(Top 108%)
40K24.85 mi0.85 mi12077-1483145-1083145-10815237(Top 57%)5419(Top 47%)5419(Top 111%)
25.2M25.20 mi0.35 mi12161-843194-493194-4916810(Top 63%)6301(Top 55%)6301(Top 129%)
Finish26.22 mi1.02 mi12379-2183336-1423336-14216255(Top 61%)5962(Top 52%)5962(Top 122%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

11007

Females

2351

F18-39

2351

5K→10K

3.1 - 6.2 mi

Top 42%
×5stories
+79ft-138ft

Overall

11066

Females

2353

F18-39

2353

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

11007

Females

2351

F18-39

2351

15K→20K

9.3 - 12.4 mi

Top 42%
×5stories
+106ft-86ft

Overall

11051

Females

2433

F18-39

2433

20K→Half

12.4 - 13.1 mi

Top 44%
×2stories
+19ft-37ft

Overall

11731

Females

2775

F18-39

2775

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

11026

Females

2503

F18-39

2503

25K→30K

15.5 - 18.6 mi

Top 40%
×9stories
+181ft-148ft

Overall

10775

Females

2536

F18-39

2536

30K→20M

18.6 - 20.0 mi

Top 47%
×5stories
+64ft-50ft

Overall

12547

Females

3604

F18-39

3604

20M→21M

20.0 - 21.0 mi

Top 62%
×8stories
+106ft-24ft

Overall

16582

Females

5952

F18-39

5952

21M→35K

21.0 - 21.8 mi

Top 60%
×7stories
+17ft-86ft

Overall

16096

Females

5735

F18-39

5735

35K→23M

21.8 - 23.0 mi

Top 59%
×5stories
+23ft-63ft

Overall

15769

Females

5607

F18-39

5607

23M→24M

23.0 - 24.0 mi

Top 57%
×6stories
+12ft-82ft

Overall

15058

Females

5253

F18-39

5253

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15237

Females

5419

F18-39

5419

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16810

Females

6301

F18-39

6301

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2stories
+22ft-21ft

Overall

16255

Females

5962

F18-39

5962

Passing Analysis

Category:
Athletes Passed
922*
Passed By
3373
Net Change
-2452
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9927
5K → 10K114671-558#9927#10485
10K → 15K130278-148#10485#10633
15K → 20K118227-109#10633#10742
20K → Half1651-35#10742#10777
Half → 25K130134-4#10777#10781
25K → 30K213144+69#10781#10712
30K → 20M53*145-92#10712#10804
20M → 21M16435-419#10804#11223
21M → 35K12232-220#11223#11443
35K → 23M34359-325#11443#11768
23M → 24M26187-161#11768#11929
24M → 40K29177-148#11929#12077
40K → 25.2M892-84#12077#12161
25.2M → Finish23241-218#12161#12379
TOTALS922*3373-2452

* 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