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BOSTON MARATHON 2023

Crystal Barton

Bib: 15761•F

OH

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
10:37/mi
33:00
↑ 97↓ 3451.5%
10K· 6.21 mi
9:19/mi
1:01:56
↑ 79↓ 1380.4%
15K· 9.32 mi
9:15/mi
1:30:40
↑ 67↓ 78
20K· 12.43 mi
9:10/mi
1:59:10
↑ 106↓ 860.1%
Half· 13.11 mi
9:01/mi
2:05:19
↑ 19↓ 370.5%
25K· 15.53 mi
9:32/mi
2:28:26
↑ 66↓ 880.2%
30K· 18.64 mi
9:38/mi
2:58:21
↑ 181↓ 1480.2%
20M
10:13/mi
3:12:14
↑ 64↓ 500.2%
21M
9:55/mi
3:22:09
↑ 106↓ 241.6%
35K· 21.75 mi
8:41/mi
3:28:39
↑ 17↓ 861.7%
23M
9:36/mi
3:40:40
↑ 23↓ 630.6%
24M
9:22/mi
3:50:02
↓ 821.3%
40K· 24.85 mi
9:54/mi
3:58:30
↓ 200.3%
25.2M
10:52/mi
4:02:15
↑ 13↓ 160.2%
Finish· 26.22 mi
10:20/mi
4:12:47
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:19
Pace9:34 /mi
2nd Half
Distance13.11 mi
Time2:07:28
Pace9:43 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:02:5633:0010:3733:00
10:37
-
10K
6.21 mi11:31:521:01:569:5828:56
9:19
-1:18
15K
9.32 mi12:00:361:30:409:4428:44
9:15
-0:04
20K
12.43 mi12:29:061:59:109:3528:30
9:10
-0:05
Half
13.11 mi12:35:152:05:199:346:09
9:01
-0:09
25K
15.53 mi12:58:222:28:269:3323:07
9:32
+0:31
30K
18.64 mi13:28:172:58:219:3429:55
9:38
+0:06
20M
20.00 mi13:42:103:12:149:3713:53
10:13
+0:35
21M
21.00 mi13:52:053:22:099:389:55
9:55
-0:18
35K
21.75 mi13:58:353:28:399:366:30
8:41
-1:14
23M
23.00 mi14:10:363:40:409:3612:01
9:36
+0:55
24M
24.00 mi14:19:583:50:029:359:22
9:22
-0:14
40K
24.85 mi14:28:263:58:309:368:28
9:54
+0:32
25.2M
25.20 mi14:32:114:02:159:373:45
10:52
+0:58
Finish
26.22 mi14:42:434:12:479:3910:32
10:20
-0:32

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

8:41 /mi

Average Pace

9:39 /mi

Slowest Pace

10:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:09:53

28% of race

Time at Steady Pace

1:43:21

41% of race

Time at Slower Pace

1:19:33

31% of race

Average Pace: 9:38 /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 mi11:02:5633:0010:3733:00
10:37
#24997
10K
6.21 mi11:31:521:01:569:5828:56
9:19
#23552
15K
9.32 mi12:00:361:30:409:4428:44
9:15
#22959
20K
12.43 mi12:29:061:59:109:3528:30
9:10
#22356
Half
13.11 mi12:35:152:05:199:346:09
9:01
#22279
25K
15.53 mi12:58:222:28:269:3323:07
9:32
#22044
30K
18.64 mi13:28:172:58:219:3429:55
9:38
#21661
20M
20.00 mi13:42:103:12:149:3713:53
10:13
#21614
21M
21.00 mi13:52:053:22:099:389:55
9:55
#21427
35K
21.75 mi13:58:353:28:399:366:30
8:41
#21279
23M
23.00 mi14:10:363:40:409:3612:01
9:36
#21108
24M
24.00 mi14:19:583:50:029:359:22
9:22
#21002
40K
24.85 mi14:28:263:58:309:368:28
9:54
#20936
25.2M
25.20 mi14:32:114:02:159:373:45
10:52
#20913
Finish
26.22 mi14:42:434:12:479:3910:32
10:20
#20995
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi24997104271042721479(Top 81%)8488(Top 74%)8488(Top 467%)
10K6.21 mi3.10 mi23552+14459651+7769651+77621976(Top 83%)8808(Top 77%)8808(Top 485%)
15K9.32 mi3.11 mi22959+5939333+3189333+31821479(Top 81%)8488(Top 74%)8488(Top 467%)
20K12.43 mi3.11 mi22356+6039009+3249009+32420470(Top 77%)7947(Top 70%)7947(Top 437%)
Half13.11 mi0.68 mi22279+778972+378972+3720537(Top 77%)7992(Top 70%)7992(Top 440%)
25K15.53 mi2.42 mi22044+2358851+1218851+12120956(Top 79%)8246(Top 72%)8246(Top 454%)
30K18.64 mi3.11 mi21661+3838645+2068645+20619908(Top 75%)7715(Top 68%)7715(Top 425%)
20M20.00 mi1.36 mi21614+478629+168629+1621070(Top 79%)8448(Top 74%)8448(Top 465%)
21M21.00 mi1.00 mi21427+1878537+928537+9217749(Top 67%)6618(Top 58%)6618(Top 364%)
35K21.75 mi0.75 mi21279+1488472+658472+6516412(Top 62%)5961(Top 52%)5961(Top 328%)
23M23.00 mi1.25 mi21108+1718393+798393+7918748(Top 70%)7271(Top 64%)7271(Top 400%)
24M24.00 mi1.00 mi21002+1068344+498344+4918743(Top 70%)7306(Top 64%)7306(Top 402%)
40K24.85 mi0.85 mi20936+668321+238321+2319722(Top 74%)7908(Top 69%)7908(Top 435%)
25.2M25.20 mi0.35 mi20913+238310+118310+1120194(Top 76%)8163(Top 71%)8163(Top 449%)
Finish26.22 mi1.02 mi20995-828369-598369-5922652(Top 85%)9474(Top 83%)9474(Top 521%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 81%
×21story building
+97ft-345ft

Overall

21479

Females

8488

F45-49

8488

5K→10K

3.1 - 6.2 mi

Top 83%
×5story building
+79ft-138ft

Overall

21976

Females

8808

F45-49

8808

10K→15K

6.2 - 9.3 mi

Top 81%
×3story building
+67ft-78ft

Overall

21479

Females

8488

F45-49

8488

15K→20K

9.3 - 12.4 mi

Top 77%
×5story building
+106ft-86ft

Overall

20470

Females

7947

F45-49

7947

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

20537

Females

7992

F45-49

7992

Half→25K

13.1 - 15.5 mi

Top 79%
×4story building
+66ft-88ft

Overall

20956

Females

8246

F45-49

8246

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

19908

Females

7715

F45-49

7715

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

21070

Females

8448

F45-49

8448

20M→21M

20.0 - 21.0 mi

Top 67%
×8story building
+106ft-24ft

Overall

17749

Females

6618

F45-49

6618

21M→35K

21.0 - 21.8 mi

Top 62%
×7story building
+17ft-86ft

Overall

16412

Females

5961

F45-49

5961

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18748

Females

7271

F45-49

7271

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

18743

Females

7306

F45-49

7306

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

19722

Females

7908

F45-49

7908

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20194

Females

8163

F45-49

8163

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2story building
+22ft-21ft

Overall

22652

Females

9474

F45-49

9474

Passing Analysis

Category:
Athletes Passed
4198
Passed By
196
Net Change
+4002
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24997
5K → 10K14450+1445#24997#23552
10K → 15K5996+593#23552#22959
15K → 20K6030+603#22959#22356
20K → Half781+77#22356#22279
Half → 25K24611+235#22279#22044
25K → 30K39512+383#22044#21661
30K → 20M8134+47#21661#21614
20M → 21M1892+187#21614#21427
21M → 35K1480+148#21427#21279
35K → 23M1765+171#21279#21108
23M → 24M1115+106#21108#21002
24M → 40K737+66#21002#20936
40K → 25.2M307+23#20936#20913
25.2M → Finish24106-82#20913#20995
TOTALS4198196+4002
📊

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