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BOSTON MARATHON 2023

Mara Kahrmann

Bib: 27452•F

TX

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
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
10:33/mi
32:46
↑ 97↓ 3451.5%
10K· 6.21 mi
10:03/mi
1:03:59
↑ 79↓ 1380.4%
15K· 9.32 mi
10:00/mi
1:35:02
↑ 67↓ 78
20K· 12.43 mi
9:58/mi
2:06:00
↑ 106↓ 860.1%
Half· 13.11 mi
10:02/mi
2:12:51
↑ 19↓ 370.5%
25K· 15.53 mi
10:24/mi
2:38:04
↑ 66↓ 880.2%
30K· 18.64 mi
10:30/mi
3:10:41
↑ 181↓ 1480.2%
20M
10:31/mi
3:24:59
↑ 64↓ 500.2%
21M
10:31/mi
3:35:30
↑ 106↓ 241.6%
35K· 21.75 mi
9:49/mi
3:42:51
↑ 17↓ 861.7%
23M
9:59/mi
3:55:21
↑ 23↓ 630.6%
24M
9:30/mi
4:04:51
↓ 821.3%
40K· 24.85 mi
9:58/mi
4:13:22
↓ 200.3%
25.2M
10:23/mi
4:16:57
↑ 13↓ 160.2%
Finish· 26.22 mi
9:23/mi
4:26:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:12:51
Pace10:08 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:13:40
Pace10:12 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:5732:4610:3332:46
10:33
-
10K
6.21 mi12:21:101:03:5910:1831:13
10:03
-0:30
15K
9.32 mi12:52:131:35:0210:1231:03
10:00
-0:03
20K
12.43 mi13:23:112:06:0010:0830:58
9:58
-0:02
Half
13.11 mi13:30:022:12:5110:086:51
10:02
+0:04
25K
15.53 mi13:55:152:38:0410:1125:13
10:24
+0:22
30K
18.64 mi14:27:523:10:4110:1432:37
10:30
+0:06
20M
20.00 mi14:42:103:24:5910:1514:18
10:31
+0:01
21M
21.00 mi14:52:413:35:3010:1610:31
10:31
0:00
35K
21.75 mi15:00:023:42:5110:157:21
9:49
-0:42
23M
23.00 mi15:12:323:55:2110:1412:30
9:59
+0:10
24M
24.00 mi15:22:024:04:5110:129:30
9:30
-0:29
40K
24.85 mi15:30:334:13:2210:128:31
9:58
+0:28
25.2M
25.20 mi15:34:084:16:5710:123:35
10:23
+0:25
Finish
26.22 mi15:43:424:26:3110:109:34
9:23
-1:00

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

9:23 /mi

Average Pace

10:10 /mi

Slowest Pace

10:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:31

55% of race

Time at Steady Pace

1:59:00

45% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:10 /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 mi11:49:5732:4610:3332:46
10:33
#24820
10K
6.21 mi12:21:101:03:5910:1831:13
10:03
#24261
15K
9.32 mi12:52:131:35:0210:1231:03
10:00
#24001
20K
12.43 mi13:23:112:06:0010:0830:58
9:58
#23717
Half
13.11 mi13:30:022:12:5110:086:51
10:02
#23686
25K
15.53 mi13:55:152:38:0410:1125:13
10:24
#23560
30K
18.64 mi14:27:523:10:4110:1432:37
10:30
#23292
20M
20.00 mi14:42:103:24:5910:1514:18
10:31
#23182
21M
21.00 mi14:52:413:35:3010:1610:31
10:31
#23010
35K
21.75 mi15:00:023:42:5110:157:21
9:49
#22932
23M
23.00 mi15:12:323:55:2110:1412:30
9:59
#22783
24M
24.00 mi15:22:024:04:5110:129:30
9:30
#22638
40K
24.85 mi15:30:334:13:2210:128:31
9:58
#22559
25.2M
25.20 mi15:34:084:16:5710:123:35
10:23
#22509
Finish
26.22 mi15:43:424:26:3110:109:34
9:23
#22429
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24820103381033823489(Top 88%)9602(Top 84%)9602(Top 197%)
10K6.21 mi3.10 mi24261+55910031+30710031+30723794(Top 89%)9777(Top 86%)9777(Top 200%)
15K9.32 mi3.11 mi24001+2609891+1409891+14023489(Top 88%)9602(Top 84%)9602(Top 197%)
20K12.43 mi3.11 mi23717+2849728+1639728+16322839(Top 86%)9264(Top 81%)9264(Top 190%)
Half13.11 mi0.68 mi23686+319715+139715+1323365(Top 88%)9548(Top 84%)9548(Top 195%)
25K15.53 mi2.42 mi23560+1269654+619654+6123015(Top 86%)9397(Top 82%)9397(Top 192%)
30K18.64 mi3.11 mi23292+2689535+1199535+11922212(Top 83%)9021(Top 79%)9021(Top 185%)
20M20.00 mi1.36 mi23182+1109488+479488+4721772(Top 82%)8860(Top 78%)8860(Top 181%)
21M21.00 mi1.00 mi23010+1729410+789410+7819678(Top 74%)7758(Top 68%)7758(Top 159%)
35K21.75 mi0.75 mi22932+789380+309380+3020848(Top 78%)8414(Top 74%)8414(Top 172%)
23M23.00 mi1.25 mi22783+1499313+679313+6719966(Top 75%)7941(Top 70%)7941(Top 163%)
24M24.00 mi1.00 mi22638+1459242+719242+7119249(Top 72%)7598(Top 67%)7598(Top 156%)
40K24.85 mi0.85 mi22559+799200+429200+4219887(Top 75%)8004(Top 70%)8004(Top 164%)
25.2M25.20 mi0.35 mi22509+509181+199181+1918830(Top 71%)7434(Top 65%)7434(Top 152%)
Finish26.22 mi1.02 mi22429+809143+389143+3819744(Top 74%)7868(Top 69%)7868(Top 161%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

23489

Females

9602

F18-39

9602

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

23794

Females

9777

F18-39

9777

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

23489

Females

9602

F18-39

9602

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

22839

Females

9264

F18-39

9264

20K→Half

12.4 - 13.1 mi

Top 88%
×2story building
+19ft-37ft

Overall

23365

Females

9548

F18-39

9548

Half→25K

13.1 - 15.5 mi

Top 86%
×4story building
+66ft-88ft

Overall

23015

Females

9397

F18-39

9397

25K→30K

15.5 - 18.6 mi

Top 83%
×9story building
+181ft-148ft

Overall

22212

Females

9021

F18-39

9021

30K→20M

18.6 - 20.0 mi

Top 82%
×5story building
+64ft-50ft

Overall

21772

Females

8860

F18-39

8860

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

19678

Females

7758

F18-39

7758

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

20848

Females

8414

F18-39

8414

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

19966

Females

7941

F18-39

7941

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

19249

Females

7598

F18-39

7598

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

19887

Females

8004

F18-39

8004

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

18830

Females

7434

F18-39

7434

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2story building
+22ft-21ft

Overall

19744

Females

7868

F18-39

7868

Passing Analysis

Category:
Athletes Passed
2543
Passed By
152
Net Change
+2391
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24820
5K → 10K59132+559#24820#24261
10K → 15K29838+260#24261#24001
15K → 20K29915+284#24001#23717
20K → Half354+31#23717#23686
Half → 25K16034+126#23686#23560
25K → 30K2768+268#23560#23292
30K → 20M1199+110#23292#23182
20M → 21M1720+172#23182#23010
21M → 35K791+78#23010#22932
35K → 23M1534+149#22932#22783
23M → 24M1450+145#22783#22638
24M → 40K790+79#22638#22559
40K → 25.2M511+50#22559#22509
25.2M → Finish866+80#22509#22429
TOTALS2543152+2391
📊

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