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BOSTON MARATHON 2023

Jenna Memmelaar

Bib: 15510•F

MI

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 38%
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:14
Rank: #12361
Start → 5K
7:48/mi
24:14 split
10K· 6.21 mi
48:43
Rank: #13104 (-743)
5K → 10K
7:53/mi
24:29 split
15K· 9.32 mi
1:13:30
Rank: #13464 (-360)
10K → 15K
7:59/mi
24:47 split
20K· 12.43 mi
1:38:48
Rank: #13704 (-240)
15K → 20K
8:09/mi
25:18 split
Half· 13.11 mi
1:44:20
Rank: #13778 (-74)
20K → Half
8:07/mi
5:32 split
25K· 15.53 mi
2:04:16
Rank: #13872 (-94)
Half → 25K
8:13/mi
19:56 split
30K· 18.64 mi
2:30:17
Rank: #13785 (+87)
25K → 30K
8:22/mi
26:01 split
20M
2:41:50
Rank: #13771 (+14)
30K → 20M
8:30/mi
11:33 split
21M
2:50:45
Rank: #13703 (+68)
20M → 21M
8:55/mi
8:55 split
35K· 21.75 mi
2:57:05
Rank: #13745 (-42)
21M → 35K
8:28/mi
6:20 split
23M
3:08:05
Rank: #13790 (-45)
35K → 23M
8:47/mi
11:00 split
24M
3:16:43
Rank: #13856 (-66)
23M → 24M
8:38/mi
8:38 split
40K· 24.85 mi
3:24:23
Rank: #13920 (-64)
24M → 40K
8:58/mi
7:40 split
25.2M
3:27:43
Rank: #13966 (-46)
40K → 25.2M
9:40/mi
3:20 split
Finish· 26.22 mi
3:36:36
Rank: #14083 (-117)
25.2M → Finish
8:43/mi
8:53 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:20
Pace7:58 /mi
2nd Half
Distance13.11 mi
Time1:52:16
Pace8:34 /mi
📊Positive Split: 7.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:2124:147:4824:14
7:48
-
10K
6.21 mi11:18:5048:437:5024:29
7:53
+0:05
15K
9.32 mi11:43:371:13:307:5324:47
7:59
+0:06
20K
12.43 mi12:08:551:38:487:5725:18
8:09
+0:10
Half
13.11 mi12:14:271:44:207:585:32
8:07
-0:02
25K
15.53 mi12:34:232:04:168:0019:56
8:13
+0:06
30K
18.64 mi13:00:242:30:178:0426:01
8:22
+0:09
20M
20.00 mi13:11:572:41:508:0511:33
8:30
+0:08
21M
21.00 mi13:20:522:50:458:088:55
8:55
+0:25
35K
21.75 mi13:27:122:57:058:096:20
8:28
-0:27
23M
23.00 mi13:38:123:08:058:1111:00
8:47
+0:19
24M
24.00 mi13:46:503:16:438:128:38
8:38
-0:09
40K
24.85 mi13:54:303:24:238:137:40
8:58
+0:20
25.2M
25.20 mi13:57:503:27:438:153:20
9:40
+0:42
Finish
26.22 mi14:06:433:36:368:168:53
8:43
-0:57

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

7:48 /mi

Average Pace

8:16 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:16

57% of race

Time at Steady Pace

52:32

24% of race

Time at Slower Pace

39:48

18% of race

Average Pace: 8:16 /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 mi10:54:2124:147:4824:14
7:48
#12361
10K
6.21 mi11:18:5048:437:5024:29
7:53
#13104
15K
9.32 mi11:43:371:13:307:5324:47
7:59
#13464
20K
12.43 mi12:08:551:38:487:5725:18
8:09
#13704
Half
13.11 mi12:14:271:44:207:585:32
8:07
#13778
25K
15.53 mi12:34:232:04:168:0019:56
8:13
#13872
30K
18.64 mi13:00:242:30:178:0426:01
8:22
#13785
20M
20.00 mi13:11:572:41:508:0511:33
8:30
#13771
21M
21.00 mi13:20:522:50:458:088:55
8:55
#13703
35K
21.75 mi13:27:122:57:058:096:20
8:28
#13745
23M
23.00 mi13:38:123:08:058:1111:00
8:47
#13790
24M
24.00 mi13:46:503:16:438:128:38
8:38
#13856
40K
24.85 mi13:54:303:24:238:137:40
8:58
#13920
25.2M
25.20 mi13:57:503:27:438:153:20
9:40
#13966
Finish
26.22 mi14:06:433:36:368:168:53
8:43
#14083
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi123613080308014205(Top 53%)4204(Top 37%)4204(Top 86%)
10K6.21 mi3.10 mi13104-7433510-4303510-43013826(Top 52%)3942(Top 35%)3942(Top 81%)
15K9.32 mi3.11 mi13464-3603729-2193729-21914205(Top 53%)4204(Top 37%)4204(Top 86%)
20K12.43 mi3.11 mi13704-2403911-1823911-18214555(Top 55%)4435(Top 39%)4435(Top 91%)
Half13.11 mi0.68 mi13778-743946-353946-3515225(Top 57%)4810(Top 42%)4810(Top 98%)
25K15.53 mi2.42 mi13872-944037-914037-9114403(Top 54%)4455(Top 39%)4455(Top 91%)
30K18.64 mi3.11 mi13785+874010+274010+2713535(Top 51%)4049(Top 35%)4049(Top 83%)
20M20.00 mi1.36 mi13771+144020-104020-1013644(Top 51%)4204(Top 37%)4204(Top 86%)
21M21.00 mi1.00 mi13703+683993+273993+2712964(Top 49%)3928(Top 34%)3928(Top 80%)
35K21.75 mi0.75 mi13745-424036-434036-4315118(Top 57%)5169(Top 45%)5169(Top 106%)
23M23.00 mi1.25 mi13790-454094-584094-5814919(Top 56%)5119(Top 45%)5119(Top 105%)
24M24.00 mi1.00 mi13856-664171-774171-7715270(Top 57%)5382(Top 47%)5382(Top 110%)
40K24.85 mi0.85 mi13920-644223-524223-5215974(Top 60%)5832(Top 51%)5832(Top 119%)
25.2M25.20 mi0.35 mi13966-464254-314254-3115972(Top 60%)5836(Top 51%)5836(Top 119%)
Finish26.22 mi1.02 mi14083-1174350-964350-9616579(Top 62%)6133(Top 54%)6133(Top 126%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21stories
+97ft-345ft

Overall

14205

Females

4204

F18-39

4204

5K→10K

3.1 - 6.2 mi

Top 52%
×5stories
+79ft-138ft

Overall

13826

Females

3942

F18-39

3942

10K→15K

6.2 - 9.3 mi

Top 53%
×3stories
+67ft-78ft

Overall

14205

Females

4204

F18-39

4204

15K→20K

9.3 - 12.4 mi

Top 55%
×5stories
+106ft-86ft

Overall

14555

Females

4435

F18-39

4435

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

15225

Females

4810

F18-39

4810

Half→25K

13.1 - 15.5 mi

Top 54%
×4stories
+66ft-88ft

Overall

14403

Females

4455

F18-39

4455

25K→30K

15.5 - 18.6 mi

Top 51%
×9stories
+181ft-148ft

Overall

13535

Females

4049

F18-39

4049

30K→20M

18.6 - 20.0 mi

Top 51%
×5stories
+64ft-50ft

Overall

13644

Females

4204

F18-39

4204

20M→21M

20.0 - 21.0 mi

Top 49%
×8stories
+106ft-24ft

Overall

12964

Females

3928

F18-39

3928

21M→35K

21.0 - 21.8 mi

Top 57%
×7stories
+17ft-86ft

Overall

15118

Females

5169

F18-39

5169

35K→23M

21.8 - 23.0 mi

Top 56%
×5stories
+23ft-63ft

Overall

14919

Females

5119

F18-39

5119

23M→24M

23.0 - 24.0 mi

Top 57%
×6stories
+12ft-82ft

Overall

15270

Females

5382

F18-39

5382

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

15974

Females

5832

F18-39

5832

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

15972

Females

5836

F18-39

5836

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2stories
+22ft-21ft

Overall

16579

Females

6133

F18-39

6133

Passing Analysis

Category:
Athletes Passed
1142
Passed By
2864
Net Change
-1722
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12361
5K → 10K100843-743#12361#13104
10K → 15K97457-360#13104#13464
15K → 20K111351-240#13464#13704
20K → Half1185-74#13704#13778
Half → 25K105199-94#13778#13872
25K → 30K224137+87#13872#13785
30K → 20M9581+14#13785#13771
20M → 21M13163+68#13771#13703
21M → 35K4284-42#13703#13745
35K → 23M74119-45#13745#13790
23M → 24M50116-66#13790#13856
24M → 40K47111-64#13856#13920
40K → 25.2M1763-46#13920#13966
25.2M → Finish38155-117#13966#14083
TOTALS11422864-1722
📊

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