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BOSTON MARATHON 2023

Crystal De Alba

Bib: 21573•F

HI

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

Start
0:00:00
Race begins
5K· 3.11 mi
27:37
Rank: #19950
Start → 5K
27:37 | 8:53/mi
10K· 6.21 mi
55:10
Rank: #20085 (-135)
5K → 10K
27:33 | 8:52/mi
15K· 9.32 mi
1:24:29
Rank: #20871 (-786)
10K → 15K
29:19 | 9:26/mi
20K· 12.43 mi
1:54:21
Rank: #21195 (-324)
15K → 20K
29:52 | 9:37/mi
Half· 13.11 mi
2:00:43
Rank: #21210 (-15)
20K → Half
6:22 | 9:20/mi
25K· 15.53 mi
2:24:33
Rank: #21302 (-92)
Half → 25K
23:50 | 9:50/mi
30K· 18.64 mi
2:57:33
Rank: #21555 (-253)
25K → 30K
33:00 | 10:37/mi
20M
3:12:07
Rank: #21602 (-47)
30K → 20M
14:34 | 10:43/mi
21M
3:23:54
Rank: #21688 (-86)
20M → 21M
11:47 | 11:47/mi
35K· 21.75 mi
3:31:33
Rank: #21695 (-7)
21M → 35K
7:39 | 10:14/mi
23M
3:44:53
Rank: #21675 (+20)
35K → 23M
13:20 | 10:39/mi
24M
3:55:43
Rank: #21753 (-78)
23M → 24M
10:50 | 10:50/mi
40K· 24.85 mi
4:04:36
Rank: #21714 (+39)
24M → 40K
8:53 | 10:23/mi
25.2M
4:08:25
Rank: #21697 (+17)
40K → 25.2M
3:49 | 11:04/mi
Finish· 26.22 mi
4:18:44
Rank: #21707 (-10)
25.2M → Finish
10:19 | 10:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:43
Pace9:12 /mi
2nd Half
Distance13.11 mi
Time2:18:01
Pace10:32 /mi
📊Positive Split: 14.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:3727:378:5327:37
8:53
-
10K
6.21 mi11:49:1055:108:5327:33
8:52
-0:01
15K
9.32 mi12:18:291:24:299:0429:19
9:26
+0:34
20K
12.43 mi12:48:211:54:219:1229:52
9:37
+0:11
Half
13.11 mi12:54:432:00:439:126:22
9:20
-0:17
25K
15.53 mi13:18:332:24:339:1823:50
9:50
+0:30
30K
18.64 mi13:51:332:57:339:3133:00
10:37
+0:47
20M
20.00 mi14:06:073:12:079:3614:34
10:43
+0:06
21M
21.00 mi14:17:543:23:549:4311:47
11:47
+1:04
35K
21.75 mi14:25:333:31:339:447:39
10:14
-1:33
23M
23.00 mi14:38:533:44:539:4713:20
10:39
+0:25
24M
24.00 mi14:49:433:55:439:4910:50
10:50
+0:11
40K
24.85 mi14:58:364:04:369:508:53
10:23
-0:27
25.2M
25.20 mi15:02:254:08:259:513:49
11:04
+0:41
Finish
26.22 mi15:12:444:18:449:5310:19
10:07
-0:57

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

8:52 /mi

Average Pace

9:53 /mi

Slowest Pace

11:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:43

47% of race

Time at Steady Pace

1:23:41

32% of race

Time at Slower Pace

54:20

21% 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 mi11:21:3727:378:5327:37
8:53
#19950
10K
6.21 mi11:49:1055:108:5327:33
8:52
#20085
15K
9.32 mi12:18:291:24:299:0429:19
9:26
#20871
20K
12.43 mi12:48:211:54:219:1229:52
9:37
#21195
Half
13.11 mi12:54:432:00:439:126:22
9:20
#21210
25K
15.53 mi13:18:332:24:339:1823:50
9:50
#21302
30K
18.64 mi13:51:332:57:339:3133:00
10:37
#21555
20M
20.00 mi14:06:073:12:079:3614:34
10:43
#21602
21M
21.00 mi14:17:543:23:549:4311:47
11:47
#21688
35K
21.75 mi14:25:333:31:339:447:39
10:14
#21695
23M
23.00 mi14:38:533:44:539:4713:20
10:39
#21675
24M
24.00 mi14:49:433:55:439:4910:50
10:50
#21753
40K
24.85 mi14:58:364:04:369:508:53
10:23
#21714
25.2M
25.20 mi15:02:254:08:259:513:49
11:04
#21697
Finish
26.22 mi15:12:444:18:449:5310:19
10:07
#21707
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi199507783778322073(Top 83%)8829(Top 77%)8829(Top 486%)
10K6.21 mi3.10 mi20085-1357817-347817-3420285(Top 76%)7866(Top 69%)7866(Top 433%)
15K9.32 mi3.11 mi20871-7868216-3998216-39922073(Top 83%)8829(Top 77%)8829(Top 486%)
20K12.43 mi3.11 mi21195-3248378-1628378-16221901(Top 82%)8743(Top 77%)8743(Top 481%)
Half13.11 mi0.68 mi21210-158379-18379-121652(Top 81%)8604(Top 75%)8604(Top 474%)
25K15.53 mi2.42 mi21302-928433-548433-5421821(Top 82%)8733(Top 76%)8733(Top 481%)
30K18.64 mi3.11 mi21555-2538588-1558588-15522460(Top 84%)9159(Top 80%)9159(Top 504%)
20M20.00 mi1.36 mi21602-478621-338621-3322199(Top 83%)9092(Top 80%)9092(Top 500%)
21M21.00 mi1.00 mi21688-868679-588679-5822395(Top 84%)9220(Top 81%)9220(Top 507%)
35K21.75 mi0.75 mi21695-78698-198698-1921846(Top 82%)8962(Top 78%)8962(Top 493%)
23M23.00 mi1.25 mi21675+208701-38701-321660(Top 81%)8882(Top 78%)8882(Top 489%)
24M24.00 mi1.00 mi21753-788752-518752-5122726(Top 85%)9484(Top 83%)9484(Top 522%)
40K24.85 mi0.85 mi21714+398744+88744+820966(Top 79%)8583(Top 75%)8583(Top 472%)
25.2M25.20 mi0.35 mi21697+178740+48740+420637(Top 78%)8398(Top 74%)8398(Top 462%)
Finish26.22 mi1.02 mi21707-108745-58745-522103(Top 83%)9169(Top 80%)9169(Top 505%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

22073

Females

8829

F45-49

8829

5K→10K

3.1 - 6.2 mi

Top 76%
×5stories
+79ft-138ft

Overall

20285

Females

7866

F45-49

7866

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

22073

Females

8829

F45-49

8829

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

21901

Females

8743

F45-49

8743

20K→Half

12.4 - 13.1 mi

Top 81%
×2stories
+19ft-37ft

Overall

21652

Females

8604

F45-49

8604

Half→25K

13.1 - 15.5 mi

Top 82%
×4stories
+66ft-88ft

Overall

21821

Females

8733

F45-49

8733

25K→30K

15.5 - 18.6 mi

Top 84%
×9stories
+181ft-148ft

Overall

22460

Females

9159

F45-49

9159

30K→20M

18.6 - 20.0 mi

Top 83%
×5stories
+64ft-50ft

Overall

22199

Females

9092

F45-49

9092

20M→21M

20.0 - 21.0 mi

Top 84%
×8stories
+106ft-24ft

Overall

22395

Females

9220

F45-49

9220

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

21846

Females

8962

F45-49

8962

35K→23M

21.8 - 23.0 mi

Top 81%
×5stories
+23ft-63ft

Overall

21660

Females

8882

F45-49

8882

23M→24M

23.0 - 24.0 mi

Top 85%
×6stories
+12ft-82ft

Overall

22726

Females

9484

F45-49

9484

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

20966

Females

8583

F45-49

8583

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

20637

Females

8398

F45-49

8398

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2stories
+22ft-21ft

Overall

22103

Females

9169

F45-49

9169

Passing Analysis

Category:
Athletes Passed
797
Passed By
2554
Net Change
-1757
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19950
5K → 10K240375-135#19950#20085
10K → 15K31817-786#20085#20871
15K → 20K61385-324#20871#21195
20K → Half1833-15#21195#21210
Half → 25K76168-92#21210#21302
25K → 30K62315-253#21302#21555
30K → 20M4693-47#21555#21602
20M → 21M30116-86#21602#21688
21M → 35K3643-7#21688#21695
35K → 23M7050+20#21695#21675
23M → 24M1997-78#21675#21753
24M → 40K5415+39#21753#21714
40K → 25.2M2811+17#21714#21697
25.2M → Finish2636-10#21697#21707
TOTALS7972554-1757
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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