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BOSTON MARATHON 2023

Karlene Rentschler

Bib: 24417•F

NE

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F65-69)
#0 / 221
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:35
Rank: #23043
Start → 5K
9:51/mi
30:35 split
10K· 6.21 mi
1:01:11
Rank: #23275 (-232)
5K → 10K
9:51/mi
30:36 split
15K· 9.32 mi
1:32:00
Rank: #23293 (-18)
10K → 15K
9:55/mi
30:49 split
20K· 12.43 mi
2:05:38
Rank: #23662 (-369)
15K → 20K
10:50/mi
33:38 split
Half· 13.11 mi
2:12:54
Rank: #23699 (-37)
20K → Half
10:39/mi
7:16 split
25K· 15.53 mi
2:39:18
Rank: #23689 (+10)
Half → 25K
10:53/mi
26:24 split
30K· 18.64 mi
3:16:50
Rank: #23925 (-236)
25K → 30K
12:05/mi
37:32 split
20M
3:31:49
Rank: #23844 (+81)
30K → 20M
11:02/mi
14:59 split
21M
3:43:25
Rank: #23737 (+107)
20M → 21M
11:36/mi
11:36 split
35K· 21.75 mi
3:51:35
Rank: #23725 (+12)
21M → 35K
10:55/mi
8:10 split
23M
4:05:47
Rank: #23709 (+16)
35K → 23M
11:20/mi
14:12 split
24M
4:16:50
Rank: #23685 (+24)
23M → 24M
11:03/mi
11:03 split
40K· 24.85 mi
4:26:27
Rank: #23664 (+21)
24M → 40K
11:15/mi
9:37 split
25.2M
4:30:44
Rank: #23658 (+6)
40K → 25.2M
12:25/mi
4:17 split
Finish· 26.22 mi
4:42:15
Rank: #23692 (-34)
25.2M → Finish
11:18/mi
11:31 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:12:54
Pace10:08 /mi
2nd Half
Distance13.11 mi
Time2:29:21
Pace11:24 /mi
📊Positive Split: 12.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:5130:359:5130:35
9:51
-
10K
6.21 mi12:16:271:01:119:5130:36
9:51
0:00
15K
9.32 mi12:47:161:32:009:5230:49
9:55
+0:04
20K
12.43 mi13:20:542:05:3810:0733:38
10:50
+0:55
Half
13.11 mi13:28:102:12:5410:087:16
10:39
-0:11
25K
15.53 mi13:54:342:39:1810:1526:24
10:53
+0:14
30K
18.64 mi14:32:063:16:5010:3437:32
12:05
+1:12
20M
20.00 mi14:47:053:31:4910:3514:59
11:02
-1:03
21M
21.00 mi14:58:413:43:2510:3811:36
11:36
+0:34
35K
21.75 mi15:06:513:51:3510:398:10
10:55
-0:41
23M
23.00 mi15:21:034:05:4710:4114:12
11:20
+0:25
24M
24.00 mi15:32:064:16:5010:4211:03
11:03
-0:17
40K
24.85 mi15:41:434:26:2710:439:37
11:15
+0:12
25.2M
25.20 mi15:46:004:30:4410:454:17
12:25
+1:10
Finish
26.22 mi15:57:314:42:1510:4611:31
11:18
-1:07

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

9:51 /mi

Average Pace

10:46 /mi

Slowest Pace

12:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:16

35% of race

Time at Steady Pace

2:09:34

46% of race

Time at Slower Pace

53:25

19% of race

Average Pace: 10:46 /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 mi11:45:5130:359:5130:35
9:51
#23043
10K
6.21 mi12:16:271:01:119:5130:36
9:51
#23275
15K
9.32 mi12:47:161:32:009:5230:49
9:55
#23293
20K
12.43 mi13:20:542:05:3810:0733:38
10:50
#23662
Half
13.11 mi13:28:102:12:5410:087:16
10:39
#23699
25K
15.53 mi13:54:342:39:1810:1526:24
10:53
#23689
30K
18.64 mi14:32:063:16:5010:3437:32
12:05
#23925
20M
20.00 mi14:47:053:31:4910:3514:59
11:02
#23844
21M
21.00 mi14:58:413:43:2510:3811:36
11:36
#23737
35K
21.75 mi15:06:513:51:3510:398:10
10:55
#23725
23M
23.00 mi15:21:034:05:4710:4114:12
11:20
#23709
24M
24.00 mi15:32:064:16:5010:4211:03
11:03
#23685
40K
24.85 mi15:41:434:26:2710:439:37
11:15
#23664
25.2M
25.20 mi15:46:004:30:4410:454:17
12:25
#23658
Finish
26.22 mi15:57:314:42:1510:4611:31
11:18
#23692
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF65-69Seg. OverallSeg. FemalesSeg. F65-69
5K3.11 mi3.11 mi230439417941723355(Top 88%)9521(Top 83%)9521(Top 4308%)
10K6.21 mi3.10 mi23275-2329516-999516-9923381(Top 88%)9558(Top 84%)9558(Top 4325%)
15K9.32 mi3.11 mi23293-189504+129504+1223355(Top 88%)9521(Top 83%)9521(Top 4308%)
20K12.43 mi3.11 mi23662-3699705-2019705-20124364(Top 92%)10129(Top 89%)10129(Top 4583%)
Half13.11 mi0.68 mi23699-379723-189723-1824470(Top 92%)10190(Top 89%)10190(Top 4611%)
25K15.53 mi2.42 mi23689+109730-79730-723800(Top 89%)9846(Top 86%)9846(Top 4455%)
30K18.64 mi3.11 mi23925-2369876-1469876-14624588(Top 92%)10333(Top 90%)10333(Top 4676%)
20M20.00 mi1.36 mi23844+819839+379839+3722753(Top 85%)9391(Top 82%)9391(Top 4249%)
21M21.00 mi1.00 mi23737+1079792+479792+4722069(Top 83%)9037(Top 79%)9037(Top 4089%)
35K21.75 mi0.75 mi23725+129789+39789+323163(Top 87%)9677(Top 85%)9677(Top 4379%)
23M23.00 mi1.25 mi23709+169790-19790-122983(Top 86%)9577(Top 84%)9577(Top 4333%)
24M24.00 mi1.00 mi23685+249790979023148(Top 87%)9715(Top 85%)9715(Top 4396%)
40K24.85 mi0.85 mi23664+219785+59785+522823(Top 86%)9572(Top 84%)9572(Top 4331%)
25.2M25.20 mi0.35 mi23658+69784+19784+123184(Top 87%)9761(Top 85%)9761(Top 4417%)
Finish26.22 mi1.02 mi23692-349809-259809-2524431(Top 92%)10371(Top 91%)10371(Top 4693%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

23355

Females

9521

F65-69

9521

5K→10K

3.1 - 6.2 mi

Top 88%
×5story building
+79ft-138ft

Overall

23381

Females

9558

F65-69

9558

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

23355

Females

9521

F65-69

9521

15K→20K

9.3 - 12.4 mi

Top 92%
×5story building
+106ft-86ft

Overall

24364

Females

10129

F65-69

10129

20K→Half

12.4 - 13.1 mi

Top 92%
×2story building
+19ft-37ft

Overall

24470

Females

10190

F65-69

10190

Half→25K

13.1 - 15.5 mi

Top 89%
×4story building
+66ft-88ft

Overall

23800

Females

9846

F65-69

9846

25K→30K

15.5 - 18.6 mi

Top 92%
×9story building
+181ft-148ft

Overall

24588

Females

10333

F65-69

10333

30K→20M

18.6 - 20.0 mi

Top 85%
×5story building
+64ft-50ft

Overall

22753

Females

9391

F65-69

9391

20M→21M

20.0 - 21.0 mi

Top 83%
×8story building
+106ft-24ft

Overall

22069

Females

9037

F65-69

9037

21M→35K

21.0 - 21.8 mi

Top 87%
×7story building
+17ft-86ft

Overall

23163

Females

9677

F65-69

9677

35K→23M

21.8 - 23.0 mi

Top 86%
×5story building
+23ft-63ft

Overall

22983

Females

9577

F65-69

9577

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

23148

Females

9715

F65-69

9715

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

22823

Females

9572

F65-69

9572

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

23184

Females

9761

F65-69

9761

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2story building
+22ft-21ft

Overall

24431

Females

10371

F65-69

10371

Passing Analysis

Category:
Athletes Passed
837
Passed By
1486
Net Change
-649
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23043
5K → 10K126358-232#23043#23275
10K → 15K128146-18#23275#23293
15K → 20K28397-369#23293#23662
20K → Half1249-37#23662#23699
Half → 25K8575+10#23699#23689
25K → 30K44280-236#23689#23925
30K → 20M9211+81#23925#23844
20M → 21M12114+107#23844#23737
21M → 35K2917+12#23737#23725
35K → 23M4933+16#23725#23709
23M → 24M5127+24#23709#23685
24M → 40K3918+21#23685#23664
40K → 25.2M1610+6#23664#23658
25.2M → Finish1751-34#23658#23692
TOTALS8371486-649
📊

Passing Visuals

Category:
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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