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BOSTON MARATHON 2023

Rachel Chase

Bib: 26842•F

MA

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
10:30/mi
32:37
↑ 97↓ 3451.5%
10K· 6.21 mi
9:24/mi
1:01:49
↑ 79↓ 1380.4%
15K· 9.32 mi
9:49/mi
1:32:19
↑ 67↓ 78
20K· 12.43 mi
10:41/mi
2:05:29
↑ 106↓ 860.1%
Half· 13.11 mi
10:02/mi
2:12:20
↑ 19↓ 370.5%
25K· 15.53 mi
10:58/mi
2:38:55
↑ 66↓ 880.2%
30K· 18.64 mi
10:51/mi
3:12:37
↑ 181↓ 1480.2%
20M
11:55/mi
3:28:48
↑ 64↓ 500.2%
21M
13:29/mi
3:42:17
↑ 106↓ 241.6%
35K· 21.75 mi
11:12/mi
3:50:40
↑ 17↓ 861.7%
23M
11:14/mi
4:04:44
↑ 23↓ 630.6%
24M
10:26/mi
4:15:10
↓ 821.3%
40K· 24.85 mi
10:34/mi
4:24:12
↓ 200.3%
25.2M
12:19/mi
4:28:27
↑ 13↓ 160.2%
Finish· 26.22 mi
9:59/mi
4:38:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:12:20
Pace10:06 /mi
2nd Half
Distance13.11 mi
Time2:26:17
Pace11:10 /mi
📊Positive Split: 10.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:5032:3710:3032:37
10:30
-
10K
6.21 mi12:20:021:01:499:5729:12
9:24
-1:06
15K
9.32 mi12:50:321:32:199:5430:30
9:49
+0:25
20K
12.43 mi13:23:422:05:2910:0633:10
10:41
+0:52
Half
13.11 mi13:30:332:12:2010:066:51
10:02
-0:39
25K
15.53 mi13:57:082:38:5510:1426:35
10:58
+0:56
30K
18.64 mi14:30:503:12:3710:2033:42
10:51
-0:07
20M
20.00 mi14:47:013:28:4810:2616:11
11:55
+1:04
21M
21.00 mi15:00:303:42:1710:3513:29
13:29
+1:34
35K
21.75 mi15:08:533:50:4010:368:23
11:12
-2:17
23M
23.00 mi15:22:574:04:4410:3814:04
11:14
+0:02
24M
24.00 mi15:33:234:15:1010:3810:26
10:26
-0:48
40K
24.85 mi15:42:254:24:1210:389:02
10:34
+0:08
25.2M
25.20 mi15:46:404:28:2710:394:15
12:19
+1:45
Finish
26.22 mi15:56:504:38:3710:3810:10
9:59
-2:20

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

9:24 /mi

Average Pace

10:38 /mi

Slowest Pace

13:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:16:43

28% of race

Time at Steady Pace

2:25:32

52% of race

Time at Slower Pace

56:22

20% of race

Average Pace: 10:38 /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 mi11:50:5032:3710:3032:37
10:30
#24708
10K
6.21 mi12:20:021:01:499:5729:12
9:24
#23513
15K
9.32 mi12:50:321:32:199:5430:30
9:49
#23385
20K
12.43 mi13:23:422:05:2910:0633:10
10:41
#23635
Half
13.11 mi13:30:332:12:2010:066:51
10:02
#23622
25K
15.53 mi13:57:082:38:5510:1426:35
10:58
#23657
30K
18.64 mi14:30:503:12:3710:2033:42
10:51
#23506
20M
20.00 mi14:47:013:28:4810:2616:11
11:55
#23546
21M
21.00 mi15:00:303:42:1710:3513:29
13:29
#23634
35K
21.75 mi15:08:533:50:4010:368:23
11:12
#23641
23M
23.00 mi15:22:574:04:4410:3814:04
11:14
#23605
24M
24.00 mi15:33:234:15:1010:3810:26
10:26
#23556
40K
24.85 mi15:42:254:24:1210:389:02
10:34
#23489
25.2M
25.20 mi15:46:404:28:2710:394:15
12:19
#23467
Finish
26.22 mi15:56:504:38:3710:3810:10
9:59
#23425
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24708102781027823096(Top 87%)9397(Top 82%)9397(Top 192%)
10K6.21 mi3.10 mi23513+11959629+6499629+64922216(Top 83%)8933(Top 78%)8933(Top 183%)
15K9.32 mi3.11 mi23385+1289549+809549+8023096(Top 87%)9397(Top 82%)9397(Top 192%)
20K12.43 mi3.11 mi23635-2509686-1379686-13724138(Top 91%)9988(Top 87%)9988(Top 205%)
Half13.11 mi0.68 mi23622+139681+59681+523382(Top 88%)9565(Top 84%)9565(Top 196%)
25K15.53 mi2.42 mi23657-359710-299710-2923911(Top 90%)9906(Top 87%)9906(Top 203%)
30K18.64 mi3.11 mi23506+1519649+619649+6122875(Top 86%)9394(Top 82%)9394(Top 192%)
20M20.00 mi1.36 mi23546-409683-349683-3424092(Top 90%)10128(Top 89%)10128(Top 207%)
21M21.00 mi1.00 mi23634-889736-539736-5324566(Top 92%)10375(Top 91%)10375(Top 212%)
35K21.75 mi0.75 mi23641-79743-79743-723665(Top 89%)9971(Top 87%)9971(Top 204%)
23M23.00 mi1.25 mi23605+369728+159728+1522798(Top 86%)9489(Top 83%)9489(Top 194%)
24M24.00 mi1.00 mi23556+499711+179711+1721887(Top 82%)9046(Top 79%)9046(Top 185%)
40K24.85 mi0.85 mi23489+679690+219690+2121395(Top 80%)8840(Top 77%)8840(Top 181%)
25.2M25.20 mi0.35 mi23467+229686+49686+423036(Top 87%)9682(Top 85%)9682(Top 198%)
Finish26.22 mi1.02 mi23425+429676+109676+1021717(Top 82%)8972(Top 79%)8972(Top 184%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21story building
+97ft-345ft

Overall

23096

Females

9397

F18-39

9397

5K→10K

3.1 - 6.2 mi

Top 83%
×5story building
+79ft-138ft

Overall

22216

Females

8933

F18-39

8933

10K→15K

6.2 - 9.3 mi

Top 87%
×3story building
+67ft-78ft

Overall

23096

Females

9397

F18-39

9397

15K→20K

9.3 - 12.4 mi

Top 91%
×5story building
+106ft-86ft

Overall

24138

Females

9988

F18-39

9988

20K→Half

12.4 - 13.1 mi

Top 88%
×2story building
+19ft-37ft

Overall

23382

Females

9565

F18-39

9565

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

23911

Females

9906

F18-39

9906

25K→30K

15.5 - 18.6 mi

Top 86%
×9story building
+181ft-148ft

Overall

22875

Females

9394

F18-39

9394

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

24092

Females

10128

F18-39

10128

20M→21M

20.0 - 21.0 mi

Top 92%
×8story building
+106ft-24ft

Overall

24566

Females

10375

F18-39

10375

21M→35K

21.0 - 21.8 mi

Top 89%
×7story building
+17ft-86ft

Overall

23665

Females

9971

F18-39

9971

35K→23M

21.8 - 23.0 mi

Top 86%
×5story building
+23ft-63ft

Overall

22798

Females

9489

F18-39

9489

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

21887

Females

9046

F18-39

9046

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

21395

Females

8840

F18-39

8840

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

23036

Females

9682

F18-39

9682

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

21717

Females

8972

F18-39

8972

Passing Analysis

Category:
Athletes Passed
2062
Passed By
779
Net Change
+1283
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24708
5K → 10K11994+1195#24708#23513
10K → 15K19668+128#23513#23385
15K → 20K45295-250#23385#23635
20K → Half2512+13#23635#23622
Half → 25K66101-35#23622#23657
25K → 30K18433+151#23657#23506
30K → 20M3878-40#23506#23546
20M → 21M14102-88#23546#23634
21M → 35K2229-7#23634#23641
35K → 23M6327+36#23641#23605
23M → 24M567+49#23605#23556
24M → 40K703+67#23556#23489
40K → 25.2M308+22#23489#23467
25.2M → Finish5412+42#23467#23425
TOTALS2062779+1283
📊

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