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BOSTON MARATHON 2023

Alice Burns

Bib: 21896•F

DC

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
9:29/mi
29:27
↑ 97↓ 3451.5%
10K· 6.21 mi
9:30/mi
58:57
↑ 79↓ 1380.4%
15K· 9.32 mi
9:34/mi
1:28:39
↑ 67↓ 78
20K· 12.43 mi
9:33/mi
1:58:20
↑ 106↓ 860.1%
Half· 13.11 mi
9:33/mi
2:04:51
↑ 19↓ 370.5%
25K· 15.53 mi
9:51/mi
2:28:43
↑ 66↓ 880.2%
30K· 18.64 mi
9:55/mi
2:59:33
↑ 181↓ 1480.2%
20M
10:22/mi
3:13:38
↑ 64↓ 500.2%
21M
11:22/mi
3:25:00
↑ 106↓ 241.6%
35K· 21.75 mi
9:44/mi
3:32:17
↑ 17↓ 861.7%
23M
10:38/mi
3:45:36
↑ 23↓ 630.6%
24M
10:16/mi
3:55:52
↓ 821.3%
40K· 24.85 mi
10:46/mi
4:05:04
↓ 200.3%
25.2M
12:05/mi
4:09:14
↑ 13↓ 160.2%
Finish· 26.22 mi
9:29/mi
4:18:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:51
Pace9:31 /mi
2nd Half
Distance13.11 mi
Time2:14:03
Pace10:14 /mi
📊Positive Split: 7.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:3529:279:2929:27
9:29
-
10K
6.21 mi11:54:0558:579:2929:30
9:30
+0:01
15K
9.32 mi12:23:471:28:399:3129:42
9:34
+0:04
20K
12.43 mi12:53:281:58:209:3129:41
9:33
-0:01
Half
13.11 mi12:59:592:04:519:316:31
9:33
0:00
25K
15.53 mi13:23:512:28:439:3423:52
9:51
+0:18
30K
18.64 mi13:54:412:59:339:3830:50
9:55
+0:04
20M
20.00 mi14:08:463:13:389:4114:05
10:22
+0:27
21M
21.00 mi14:20:083:25:009:4611:22
11:22
+1:00
35K
21.75 mi14:27:253:32:179:467:17
9:44
-1:38
23M
23.00 mi14:40:443:45:369:4913:19
10:38
+0:54
24M
24.00 mi14:51:003:55:529:5010:16
10:16
-0:22
40K
24.85 mi15:00:124:05:049:529:12
10:46
+0:30
25.2M
25.20 mi15:04:224:09:149:534:10
12:05
+1:19
Finish
26.22 mi15:14:024:18:549:539:40
9:29
-2:36

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

9:29 /mi

Average Pace

9:53 /mi

Slowest Pace

12:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:16:30

76% of race

Time at Slower Pace

1:02:24

24% of race

Average Pace: 9:52 /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 mi11:24:3529:279:2929:27
9:29
#22032
10K
6.21 mi11:54:0558:579:2929:30
9:30
#22300
15K
9.32 mi12:23:471:28:399:3129:42
9:34
#22353
20K
12.43 mi12:53:281:58:209:3129:41
9:33
#22188
Half
13.11 mi12:59:592:04:519:316:31
9:33
#22183
25K
15.53 mi13:23:512:28:439:3423:52
9:51
#22106
30K
18.64 mi13:54:412:59:339:3830:50
9:55
#21861
20M
20.00 mi14:08:463:13:389:4114:05
10:22
#21814
21M
21.00 mi14:20:083:25:009:4611:22
11:22
#21825
35K
21.75 mi14:27:253:32:179:467:17
9:44
#21791
23M
23.00 mi14:40:443:45:369:4913:19
10:38
#21773
24M
24.00 mi14:51:003:55:529:5010:16
10:16
#21772
40K
24.85 mi15:00:124:05:049:529:12
10:46
#21762
25.2M
25.20 mi15:04:224:09:149:534:10
12:05
#21773
Finish
26.22 mi15:14:024:18:549:539:40
9:29
#21724
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi220328896889622418(Top 84%)9022(Top 79%)9022(Top 497%)
10K6.21 mi3.10 mi22300-2688999-1038999-10322512(Top 85%)9092(Top 80%)9092(Top 500%)
15K9.32 mi3.11 mi22353-539019-209019-2022418(Top 84%)9022(Top 79%)9022(Top 497%)
20K12.43 mi3.11 mi22188+1658930+898930+8921716(Top 82%)8634(Top 76%)8634(Top 475%)
Half13.11 mi0.68 mi22183+58929+18929+122281(Top 84%)8935(Top 78%)8935(Top 492%)
25K15.53 mi2.42 mi22106+778888+418888+4121847(Top 82%)8753(Top 77%)8753(Top 482%)
30K18.64 mi3.11 mi21861+2458753+1358753+13520810(Top 78%)8237(Top 72%)8237(Top 453%)
20M20.00 mi1.36 mi21814+478741+128741+1221436(Top 81%)8662(Top 76%)8662(Top 477%)
21M21.00 mi1.00 mi21825-118754-138754-1321636(Top 81%)8798(Top 77%)8798(Top 484%)
35K21.75 mi0.75 mi21791+348747+78747+720590(Top 77%)8271(Top 72%)8271(Top 455%)
23M23.00 mi1.25 mi21773+188754-78754-721635(Top 81%)8867(Top 78%)8867(Top 488%)
24M24.00 mi1.00 mi21772+18763-98763-921491(Top 81%)8841(Top 77%)8841(Top 487%)
40K24.85 mi0.85 mi21762+108772-98772-921859(Top 82%)9071(Top 79%)9071(Top 499%)
25.2M25.20 mi0.35 mi21773-118780-88780-822663(Top 85%)9481(Top 83%)9481(Top 522%)
Finish26.22 mi1.02 mi21724+498751+298751+2920091(Top 75%)8059(Top 71%)8059(Top 444%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21story building
+97ft-345ft

Overall

22418

Females

9022

F45-49

9022

5K→10K

3.1 - 6.2 mi

Top 85%
×5story building
+79ft-138ft

Overall

22512

Females

9092

F45-49

9092

10K→15K

6.2 - 9.3 mi

Top 84%
×3story building
+67ft-78ft

Overall

22418

Females

9022

F45-49

9022

15K→20K

9.3 - 12.4 mi

Top 82%
×5story building
+106ft-86ft

Overall

21716

Females

8634

F45-49

8634

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

22281

Females

8935

F45-49

8935

Half→25K

13.1 - 15.5 mi

Top 82%
×4story building
+66ft-88ft

Overall

21847

Females

8753

F45-49

8753

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

20810

Females

8237

F45-49

8237

30K→20M

18.6 - 20.0 mi

Top 81%
×5story building
+64ft-50ft

Overall

21436

Females

8662

F45-49

8662

20M→21M

20.0 - 21.0 mi

Top 81%
×8story building
+106ft-24ft

Overall

21636

Females

8798

F45-49

8798

21M→35K

21.0 - 21.8 mi

Top 77%
×7story building
+17ft-86ft

Overall

20590

Females

8271

F45-49

8271

35K→23M

21.8 - 23.0 mi

Top 81%
×5story building
+23ft-63ft

Overall

21635

Females

8867

F45-49

8867

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

21491

Females

8841

F45-49

8841

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21859

Females

9071

F45-49

9071

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

22663

Females

9481

F45-49

9481

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

20091

Females

8059

F45-49

8059

Passing Analysis

Category:
Athletes Passed
1355
Passed By
1047
Net Change
+308
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22032
5K → 10K134402-268#22032#22300
10K → 15K135188-53#22300#22353
15K → 20K22358+165#22353#22188
20K → Half2823+5#22188#22183
Half → 25K13659+77#22183#22106
25K → 30K28237+245#22106#21861
30K → 20M9043+47#21861#21814
20M → 21M5364-11#21814#21825
21M → 35K4713+34#21825#21791
35K → 23M7456+18#21791#21773
23M → 24M4039+1#21773#21772
24M → 40K4333+10#21772#21762
40K → 25.2M1425-11#21762#21773
25.2M → Finish567+49#21773#21724
TOTALS13551047+308
📊

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