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BOSTON MARATHON 2023

Kerrin Ahl

MA

Bib: 31537 F

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

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
11:51/mi
36:50
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
12:29/mi
1:15:37
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
12:05/mi
1:53:09
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
12:53/mi
2:33:12
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
11:42/mi
2:41:11
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
14:10/mi
3:15:31
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
13:27/mi
3:57:18
↑ 181↓ 1480.2%
138 ft elev
20M
13:17/mi
4:15:21
↑ 64↓ 500.2%
148 ft elev
21M
13:08/mi
4:28:29
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
11:08/mi
4:36:49
↑ 17↓ 861.7%
156 ft elev
23M
12:11/mi
4:52:04
↑ 23↓ 630.6%
116 ft elev
24M
11:21/mi
5:03:25
↓ 821.3%
34 ft elev
40K· 24.85 mi
11:50/mi
5:13:32
↓ 200.3%
20 ft elev
25.2M
13:32/mi
5:18:12
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
10:05/mi
5:28:29
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
2:41:1112:18 /mi⚡ faster
2nd Half
2:47:1812:46 /mi+3.8%
Positive split — 3.8% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
36:5011:513.11 mi36:50
11:51
-
10K
1:15:3712:103.10 mi38:47
12:29
+0:38
15K
1:53:0912:083.11 mi37:32
12:05
-0:24
20K
2:33:1212:203.11 mi40:03
12:53
+0:48
Half(13.11 mi)
2:41:1112:180.68 mi7:59
11:42
-1:11
25K
3:15:3112:352.42 mi34:20
14:10
+2:28
30K
3:57:1812:443.11 mi41:47
13:27
-0:43
20M
4:15:2112:461.36 mi18:03
13:17
-0:10
21M
4:28:2912:471.00 mi13:08
13:08
-0:09
35K
4:36:4912:440.75 mi8:20
11:08
-2:00
23M
4:52:0412:421.25 mi15:15
12:11
+1:03
24M
5:03:2512:391.00 mi11:21
11:21
-0:50
40K
5:13:3212:370.85 mi10:07
11:50
+0:29
25.2M
5:18:1212:380.35 mi4:40
13:32
+1:42
Finish(26.22 mi)
5:28:2912:321.02 mi10:17
10:05
-3:27
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

10:05 /mi

Average Pace

12:32 /mi

Slowest Pace

14:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

29:58

9% of race

Time at Steady Pace

2:26:30

45% of race

Time at Slower Pace

2:32:01

46% of race

Average Pace: 12:32 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi263811127911279261081110611106
10K6.21 mi3.10 mi26438-5711315-3611315-36264681134211342
15K9.32 mi3.11 mi26364+7411272+4311272+43261081110611106
20K12.43 mi3.11 mi26338+2611249+2311249+23261841116611166
Half13.11 mi0.68 mi26311+2711234+1511234+15256581088110881
25K15.53 mi2.42 mi26328-1711240-611240-6264021130611306
30K18.64 mi3.11 mi26271+5711210+3011210+30257191095810958
20M20.00 mi1.36 mi26206+6511180+3011180+30253951080210802
21M21.00 mi1.00 mi26152+5411151+2911151+29242491022710227
35K21.75 mi0.75 mi26101+5111127+2411127+242357099229922
23M23.00 mi1.25 mi26029+7211081+4611081+46242321025610256
24M24.00 mi1.00 mi25978+5111053+2811053+282367699879987
40K24.85 mi0.85 mi25932+4611028+2511028+25236831003710037
25.2M25.20 mi0.35 mi25913+1911019+911019+9245811048110481
Finish26.22 mi1.02 mi25841+7210989+3010989+302202491359135

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21story building
+97ft-345ft

Overall

26108

Females

11106

F18-39

11106

5K→10K

3.1 - 6.2 mi

Top 99%
×5story building
+79ft-138ft

Overall

26468

Females

11342

F18-39

11342

10K→15K

6.2 - 9.3 mi

Top 98%
×3story building
+67ft-78ft

Overall

26108

Females

11106

F18-39

11106

15K→20K

9.3 - 12.4 mi

Top 98%
×5story building
+106ft-86ft

Overall

26184

Females

11166

F18-39

11166

20K→Half

12.4 - 13.1 mi

Top 96%
×2story building
+19ft-37ft

Overall

25658

Females

10881

F18-39

10881

Half→25K

13.1 - 15.5 mi

Top 99%
×4story building
+66ft-88ft

Overall

26402

Females

11306

F18-39

11306

25K→30K

15.5 - 18.6 mi

Top 97%
×9story building
+181ft-148ft

Overall

25719

Females

10958

F18-39

10958

30K→20M

18.6 - 20.0 mi

Top 95%
×5story building
+64ft-50ft

Overall

25395

Females

10802

F18-39

10802

20M→21M

20.0 - 21.0 mi

Top 91%
×8story building
+106ft-24ft

Overall

24249

Females

10227

F18-39

10227

21M→35K

21.0 - 21.8 mi

Top 89%
×7story building
+17ft-86ft

Overall

23570

Females

9922

F18-39

9922

35K→23M

21.8 - 23.0 mi

Top 91%
×5story building
+23ft-63ft

Overall

24232

Females

10256

F18-39

10256

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

23676

Females

9987

F18-39

9987

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

23683

Females

10037

F18-39

10037

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

24581

Females

10481

F18-39

10481

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

22024

Females

9135

F18-39

9135

Passing Analysis

Category:
Athletes Passed
690
Passed By
150
Net Change
+540
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26381
5K → 10K1875-57#26381#26438
10K → 15K784+74#26438#26364
15K → 20K4923+26#26364#26338
20K → Half270+27#26338#26311
Half → 25K1229-17#26311#26328
25K → 30K7013+57#26328#26271
30K → 20M661+65#26271#26206
20M → 21M540+54#26206#26152
21M → 35K510+51#26152#26101
35K → 23M731+72#26101#26029
23M → 24M543+51#26029#25978
24M → 40K471+46#25978#25932
40K → 25.2M190+19#25932#25913
25.2M → Finish720+72#25913#25841
TOTALS690150+540

Passing Charts

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