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BOSTON MARATHON 2023

Katarzyna Astbury

Bib: 22325•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
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
8:26/mi
26:11
↑ 97↓ 3451.5%
10K· 6.21 mi
8:25/mi
52:19
↑ 79↓ 1380.4%
15K· 9.32 mi
8:35/mi
1:18:59
↑ 67↓ 78
20K· 12.43 mi
8:45/mi
1:46:09
↑ 106↓ 860.1%
Half· 13.11 mi
8:48/mi
1:52:09
↑ 19↓ 370.5%
25K· 15.53 mi
8:52/mi
2:13:38
↑ 66↓ 880.2%
30K· 18.64 mi
9:35/mi
2:43:23
↑ 181↓ 1480.2%
20M
9:33/mi
2:56:21
↑ 64↓ 500.2%
21M
10:29/mi
3:06:50
↑ 106↓ 241.6%
35K· 21.75 mi
9:08/mi
3:13:40
↑ 17↓ 861.7%
23M
9:38/mi
3:25:44
↑ 23↓ 630.6%
24M
9:20/mi
3:35:04
↓ 821.3%
40K· 24.85 mi
9:42/mi
3:43:22
↓ 200.3%
25.2M
10:35/mi
3:47:01
↑ 13↓ 160.2%
Finish· 26.22 mi
9:40/mi
3:56:52
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:09
Pace8:33 /mi
2nd Half
Distance13.11 mi
Time2:04:43
Pace9:31 /mi
📊Positive Split: 11.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:5426:118:2626:11
8:26
-
10K
6.21 mi11:47:0252:198:2526:08
8:25
-0:01
15K
9.32 mi12:13:421:18:598:2826:40
8:35
+0:10
20K
12.43 mi12:40:521:46:098:3227:10
8:45
+0:10
Half
13.11 mi12:46:521:52:098:336:00
8:48
+0:03
25K
15.53 mi13:08:212:13:388:3621:29
8:52
+0:04
30K
18.64 mi13:38:062:43:238:4629:45
9:35
+0:43
20M
20.00 mi13:51:042:56:218:4912:58
9:33
-0:02
21M
21.00 mi14:01:333:06:508:5410:29
10:29
+0:56
35K
21.75 mi14:08:233:13:408:546:50
9:08
-1:21
23M
23.00 mi14:20:273:25:448:5712:04
9:38
+0:30
24M
24.00 mi14:29:473:35:048:589:20
9:20
-0:18
40K
24.85 mi14:38:053:43:228:598:18
9:42
+0:22
25.2M
25.20 mi14:41:443:47:019:013:39
10:35
+0:53
Finish
26.22 mi14:51:353:56:529:029:51
9:40
-0:55

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

8:25 /mi

Average Pace

9:02 /mi

Slowest Pace

10:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:38

56% of race

Time at Steady Pace

1:10:57

30% of race

Time at Slower Pace

32:17

14% of race

Average Pace: 9:02 /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 mi11:20:5426:118:2626:11
8:26
#17090
10K
6.21 mi11:47:0252:198:2526:08
8:25
#17349
15K
9.32 mi12:13:421:18:598:2826:40
8:35
#17687
20K
12.43 mi12:40:521:46:098:3227:10
8:45
#17845
Half
13.11 mi12:46:521:52:098:336:00
8:48
#17942
25K
15.53 mi13:08:212:13:388:3621:29
8:52
#17973
30K
18.64 mi13:38:062:43:238:4629:45
9:35
#18366
20M
20.00 mi13:51:042:56:218:4912:58
9:33
#18434
21M
21.00 mi14:01:333:06:508:5410:29
10:29
#18536
35K
21.75 mi14:08:233:13:408:546:50
9:08
#18519
23M
23.00 mi14:20:273:25:448:5712:04
9:38
#18552
24M
24.00 mi14:29:473:35:048:589:20
9:20
#18555
40K
24.85 mi14:38:053:43:228:598:18
9:42
#18590
25.2M
25.20 mi14:41:443:47:019:013:39
10:35
#18612
Finish
26.22 mi14:51:353:56:529:029:51
9:40
#18744
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi170905993599318343(Top 69%)6702(Top 59%)6702(Top 369%)
10K6.21 mi3.10 mi17349-2596140-1476140-14717664(Top 66%)6285(Top 55%)6285(Top 346%)
15K9.32 mi3.11 mi17687-3386331-1916331-19118343(Top 69%)6702(Top 59%)6702(Top 369%)
20K12.43 mi3.11 mi17845-1586432-1016432-10118394(Top 69%)6734(Top 59%)6734(Top 371%)
Half13.11 mi0.68 mi17942-976484-526484-5219487(Top 73%)7365(Top 64%)7365(Top 405%)
25K15.53 mi2.42 mi17973-316522-386522-3818288(Top 69%)6720(Top 59%)6720(Top 370%)
30K18.64 mi3.11 mi18366-3936782-2606782-26019702(Top 74%)7589(Top 66%)7589(Top 418%)
20M20.00 mi1.36 mi18434-686831-496831-4919028(Top 71%)7311(Top 64%)7311(Top 402%)
21M21.00 mi1.00 mi18536-1026898-676898-6719558(Top 73%)7676(Top 67%)7676(Top 422%)
35K21.75 mi0.75 mi18519+176897+16897+118491(Top 69%)7099(Top 62%)7099(Top 391%)
23M23.00 mi1.25 mi18552-336925-286925-2818875(Top 71%)7338(Top 64%)7338(Top 404%)
24M24.00 mi1.00 mi18555-36939-146939-1418613(Top 70%)7230(Top 63%)7230(Top 398%)
40K24.85 mi0.85 mi18590-356974-356974-3519057(Top 72%)7527(Top 66%)7527(Top 414%)
25.2M25.20 mi0.35 mi18612-226991-176991-1719378(Top 73%)7712(Top 68%)7712(Top 424%)
Finish26.22 mi1.02 mi18744-1327073-827073-8220687(Top 78%)8397(Top 74%)8397(Top 462%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

18343

Females

6702

F45-49

6702

5K→10K

3.1 - 6.2 mi

Top 66%
×5story building
+79ft-138ft

Overall

17664

Females

6285

F45-49

6285

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

18343

Females

6702

F45-49

6702

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

18394

Females

6734

F45-49

6734

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

19487

Females

7365

F45-49

7365

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

18288

Females

6720

F45-49

6720

25K→30K

15.5 - 18.6 mi

Top 74%
×9story building
+181ft-148ft

Overall

19702

Females

7589

F45-49

7589

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

19028

Females

7311

F45-49

7311

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

19558

Females

7676

F45-49

7676

21M→35K

21.0 - 21.8 mi

Top 69%
×7story building
+17ft-86ft

Overall

18491

Females

7099

F45-49

7099

35K→23M

21.8 - 23.0 mi

Top 71%
×5story building
+23ft-63ft

Overall

18875

Females

7338

F45-49

7338

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

18613

Females

7230

F45-49

7230

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

19057

Females

7527

F45-49

7527

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

19378

Females

7712

F45-49

7712

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

20687

Females

8397

F45-49

8397

Passing Analysis

Category:
Athletes Passed
998
Passed By
2652
Net Change
-1654
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17090
5K → 10K216475-259#17090#17349
10K → 15K91429-338#17349#17687
15K → 20K117275-158#17687#17845
20K → Half9106-97#17845#17942
Half → 25K121152-31#17942#17973
25K → 30K80473-393#17973#18366
30K → 20M70138-68#18366#18434
20M → 21M49151-102#18434#18536
21M → 35K5134+17#18536#18519
35K → 23M71104-33#18519#18552
23M → 24M5053-3#18552#18555
24M → 40K3772-35#18555#18590
40K → 25.2M2143-22#18590#18612
25.2M → Finish15147-132#18612#18744
TOTALS9982652-1654
📊

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