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BOSTON MARATHON 2023

Karen Borchert

Bib: 22123•F

NE

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 42%
Division (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:50/mi
27:28
↑ 97↓ 3451.5%
10K· 6.21 mi
8:34/mi
54:04
↑ 79↓ 1380.4%
15K· 9.32 mi
8:29/mi
1:20:24
↑ 67↓ 78
20K· 12.43 mi
8:36/mi
1:47:07
↑ 106↓ 860.1%
Half· 13.11 mi
8:17/mi
1:52:46
↑ 19↓ 370.5%
25K· 15.53 mi
8:37/mi
2:13:40
↑ 66↓ 880.2%
30K· 18.64 mi
8:54/mi
2:41:19
↑ 181↓ 1480.2%
20M
8:40/mi
2:53:05
↑ 64↓ 500.2%
21M
9:03/mi
3:02:08
↑ 106↓ 241.6%
35K· 21.75 mi
8:28/mi
3:08:28
↑ 17↓ 861.7%
23M
8:54/mi
3:19:36
↑ 23↓ 630.6%
24M
8:30/mi
3:28:06
↓ 821.3%
40K· 24.85 mi
8:45/mi
3:35:35
↓ 200.3%
25.2M
9:40/mi
3:38:55
↑ 13↓ 160.2%
Finish· 26.22 mi
8:27/mi
3:47:32
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:46
Pace8:36 /mi
2nd Half
Distance13.11 mi
Time1:54:46
Pace8:45 /mi
📊Positive Split: 1.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:2227:288:5027:28
8:50
-
10K
6.21 mi12:09:5854:048:4226:36
8:34
-0:16
15K
9.32 mi12:36:181:20:248:3826:20
8:29
-0:05
20K
12.43 mi13:03:011:47:078:3726:43
8:36
+0:07
Half
13.11 mi13:08:401:52:468:365:39
8:17
-0:19
25K
15.53 mi13:29:342:13:408:3620:54
8:37
+0:20
30K
18.64 mi13:57:132:41:198:3927:39
8:54
+0:17
20M
20.00 mi14:08:592:53:058:3911:46
8:40
-0:14
21M
21.00 mi14:18:023:02:088:409:03
9:03
+0:23
35K
21.75 mi14:24:223:08:288:406:20
8:28
-0:35
23M
23.00 mi14:35:303:19:368:4111:08
8:54
+0:26
24M
24.00 mi14:44:003:28:068:408:30
8:30
-0:24
40K
24.85 mi14:51:293:35:358:407:29
8:45
+0:15
25.2M
25.20 mi14:54:493:38:558:413:20
9:40
+0:55
Finish
26.22 mi15:03:263:47:328:418:37
8:27
-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

8:17 /mi

Average Pace

8:41 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:44:12

99% of race

Time at Steady Pace

3:20

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:41 /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 mi11:43:2227:288:5027:28
8:50
#19681
10K
6.21 mi12:09:5854:048:4226:36
8:34
#19111
15K
9.32 mi12:36:181:20:248:3826:20
8:29
#18617
20K
12.43 mi13:03:011:47:078:3726:43
8:36
#18327
Half
13.11 mi13:08:401:52:468:365:39
8:17
#18218
25K
15.53 mi13:29:342:13:408:3620:54
8:37
#17981
30K
18.64 mi13:57:132:41:198:3927:39
8:54
#17678
20M
20.00 mi14:08:592:53:058:3911:46
8:40
#17444
21M
21.00 mi14:18:023:02:088:409:03
9:03
#17225
35K
21.75 mi14:24:223:08:288:406:20
8:28
#17146
23M
23.00 mi14:35:303:19:368:4111:08
8:54
#17038
24M
24.00 mi14:44:003:28:068:408:30
8:30
#16928
40K
24.85 mi14:51:293:35:358:407:29
8:45
#16837
25.2M
25.20 mi14:54:493:38:558:413:20
9:40
#16825
Finish
26.22 mi15:03:263:47:328:418:37
8:27
#16761
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi196817623762317641(Top 66%)6296(Top 55%)6296(Top 347%)
10K6.21 mi3.10 mi19111+5707221+4027221+40218643(Top 70%)6859(Top 60%)6859(Top 377%)
15K9.32 mi3.11 mi18617+4946893+3286893+32817641(Top 66%)6296(Top 55%)6296(Top 347%)
20K12.43 mi3.11 mi18327+2906706+1876706+18717495(Top 66%)6221(Top 54%)6221(Top 342%)
Half13.11 mi0.68 mi18218+1096645+616645+6116430(Top 62%)5562(Top 49%)5562(Top 306%)
25K15.53 mi2.42 mi17981+2376525+1206525+12016928(Top 64%)5968(Top 52%)5968(Top 328%)
30K18.64 mi3.11 mi17678+3036364+1616364+16116655(Top 63%)5864(Top 51%)5864(Top 323%)
20M20.00 mi1.36 mi17444+2346241+1236241+12314661(Top 55%)4813(Top 42%)4813(Top 265%)
21M21.00 mi1.00 mi17225+2196127+1146127+11413738(Top 52%)4362(Top 38%)4362(Top 240%)
35K21.75 mi0.75 mi17146+796084+436084+4315169(Top 57%)5220(Top 46%)5220(Top 287%)
23M23.00 mi1.25 mi17038+1086046+386046+3815523(Top 58%)5468(Top 48%)5468(Top 301%)
24M24.00 mi1.00 mi16928+1105998+485998+4814514(Top 55%)4971(Top 44%)4971(Top 274%)
40K24.85 mi0.85 mi16837+915969+295969+2914860(Top 56%)5222(Top 46%)5222(Top 287%)
25.2M25.20 mi0.35 mi16825+125959+105959+1016007(Top 60%)5871(Top 51%)5871(Top 323%)
Finish26.22 mi1.02 mi16761+645940+195940+1915171(Top 57%)5360(Top 47%)5360(Top 295%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

17641

Females

6296

F45-49

6296

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

18643

Females

6859

F45-49

6859

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

17641

Females

6296

F45-49

6296

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

17495

Females

6221

F45-49

6221

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

16430

Females

5562

F45-49

5562

Half→25K

13.1 - 15.5 mi

Top 64%
×4story building
+66ft-88ft

Overall

16928

Females

5968

F45-49

5968

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

16655

Females

5864

F45-49

5864

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

14661

Females

4813

F45-49

4813

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

13738

Females

4362

F45-49

4362

21M→35K

21.0 - 21.8 mi

Top 57%
×7story building
+17ft-86ft

Overall

15169

Females

5220

F45-49

5220

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

15523

Females

5468

F45-49

5468

23M→24M

23.0 - 24.0 mi

Top 55%
×6story building
+12ft-82ft

Overall

14514

Females

4971

F45-49

4971

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

14860

Females

5222

F45-49

5222

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

16007

Females

5871

F45-49

5871

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

15171

Females

5360

F45-49

5360

Passing Analysis

Category:
Athletes Passed
3373
Passed By
453
Net Change
+2920
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19681
5K → 10K719149+570#19681#19111
10K → 15K53743+494#19111#18617
15K → 20K33242+290#18617#18327
20K → Half1101+109#18327#18218
Half → 25K26629+237#18218#17981
25K → 30K34643+303#17981#17678
30K → 20M2406+234#17678#17444
20M → 21M23112+219#17444#17225
21M → 35K889+79#17225#17146
35K → 23M14436+108#17146#17038
23M → 24M12111+110#17038#16928
24M → 40K10211+91#16928#16837
40K → 25.2M3725+12#16837#16825
25.2M → Finish10036+64#16825#16761
TOTALS3373453+2920
📊

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