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BOSTON MARATHON 2023

Maricruz Ernest

Bib: 12234•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 45%
Gender (Female)
#0 / 11423
Top 27%
Masters (Masters Women)
#0 / 6539
Top 14%
Division (F40-44)
#0 / 1878
Top 26%
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
7:39/mi
23:47
↑ 97↓ 3451.5%
10K· 6.21 mi
7:36/mi
47:23
↑ 79↓ 1380.4%
15K· 9.32 mi
7:37/mi
1:11:04
↑ 67↓ 78
20K· 12.43 mi
7:51/mi
1:35:26
↑ 106↓ 860.1%
Half· 13.11 mi
7:49/mi
1:40:46
↑ 19↓ 370.5%
25K· 15.53 mi
7:57/mi
2:00:02
↑ 66↓ 880.2%
30K· 18.64 mi
8:10/mi
2:25:23
↑ 181↓ 1480.2%
20M
8:13/mi
2:36:33
↑ 64↓ 500.2%
21M
8:57/mi
2:45:30
↑ 106↓ 241.6%
35K· 21.75 mi
8:12/mi
2:51:38
↑ 17↓ 861.7%
23M
8:31/mi
3:02:18
↑ 23↓ 630.6%
24M
8:10/mi
3:10:28
↓ 821.3%
40K· 24.85 mi
8:21/mi
3:17:36
↓ 200.3%
25.2M
8:59/mi
3:20:42
↑ 13↓ 160.2%
Finish· 26.22 mi
7:53/mi
3:28:44
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:46
Pace7:41 /mi
2nd Half
Distance13.11 mi
Time1:47:58
Pace8:14 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:1323:477:3923:47
7:39
-
10K
6.21 mi11:15:4947:237:3823:36
7:36
-0:03
15K
9.32 mi11:39:301:11:047:3723:41
7:37
+0:01
20K
12.43 mi12:03:521:35:267:4124:22
7:51
+0:14
Half
13.11 mi12:09:121:40:467:415:20
7:49
-0:02
25K
15.53 mi12:28:282:00:027:4419:16
7:57
+0:08
30K
18.64 mi12:53:492:25:237:4825:21
8:10
+0:13
20M
20.00 mi13:04:592:36:337:5011:10
8:13
+0:03
21M
21.00 mi13:13:562:45:307:538:57
8:57
+0:44
35K
21.75 mi13:20:042:51:387:546:08
8:12
-0:45
23M
23.00 mi13:30:443:02:187:5610:40
8:31
+0:19
24M
24.00 mi13:38:543:10:287:568:10
8:10
-0:21
40K
24.85 mi13:46:023:17:367:577:08
8:21
+0:11
25.2M
25.20 mi13:49:083:20:427:583:06
8:59
+0:38
Finish
26.22 mi13:57:103:28:447:588:02
7:53
-1:06

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

7:36 /mi

Average Pace

7:58 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:01

89% of race

Time at Steady Pace

19:37

9% of race

Time at Slower Pace

3:06

1% of race

Average Pace: 7:58 /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 mi10:52:1323:477:3923:47
7:39
#11078
10K
6.21 mi11:15:4947:237:3823:36
7:36
#11159
15K
9.32 mi11:39:301:11:047:3723:41
7:37
#11152
20K
12.43 mi12:03:521:35:267:4124:22
7:51
#11346
Half
13.11 mi12:09:121:40:467:415:20
7:49
#11430
25K
15.53 mi12:28:282:00:027:4419:16
7:57
#11509
30K
18.64 mi12:53:492:25:237:4825:21
8:10
#11601
20M
20.00 mi13:04:592:36:337:5011:10
8:13
#11607
21M
21.00 mi13:13:562:45:307:538:57
8:57
#11705
35K
21.75 mi13:20:042:51:387:546:08
8:12
#11787
23M
23.00 mi13:30:443:02:187:5610:40
8:31
#11865
24M
24.00 mi13:38:543:10:287:568:10
8:10
#11885
40K
24.85 mi13:46:023:17:367:577:08
8:21
#11885
25.2M
25.20 mi13:49:083:20:427:583:06
8:59
#11893
Finish
26.22 mi13:57:103:28:447:588:02
7:53
#11873
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi110782374237411218(Top 42%)2473(Top 22%)2473(Top 132%)
10K6.21 mi3.10 mi11159-812414-402414-4011315(Top 43%)2505(Top 22%)2505(Top 133%)
15K9.32 mi3.11 mi11152+72418-42418-411218(Top 42%)2473(Top 22%)2473(Top 132%)
20K12.43 mi3.11 mi11346-1942524-1062524-10612115(Top 46%)3038(Top 27%)3038(Top 162%)
Half13.11 mi0.68 mi11430-842580-562580-5612901(Top 48%)3430(Top 30%)3430(Top 183%)
25K15.53 mi2.42 mi11509-792645-652645-6512289(Top 46%)3243(Top 28%)3243(Top 173%)
30K18.64 mi3.11 mi11601-922749-1042749-10412071(Top 45%)3220(Top 28%)3220(Top 171%)
20M20.00 mi1.36 mi11607-62773-242773-2411821(Top 44%)3167(Top 28%)3167(Top 169%)
21M21.00 mi1.00 mi11705-982848-752848-7513126(Top 49%)4007(Top 35%)4007(Top 213%)
35K21.75 mi0.75 mi11787-822907-592907-5913417(Top 50%)4216(Top 37%)4216(Top 224%)
23M23.00 mi1.25 mi11865-782971-642971-6413360(Top 50%)4264(Top 37%)4264(Top 227%)
24M24.00 mi1.00 mi11885-203005-343005-3412394(Top 47%)3791(Top 33%)3791(Top 202%)
40K24.85 mi0.85 mi118853029-243029-2412349(Top 46%)3849(Top 34%)3849(Top 205%)
25.2M25.20 mi0.35 mi11893-83043-143043-1412502(Top 47%)3961(Top 35%)3961(Top 211%)
Finish26.22 mi1.02 mi11873+203052-93052-911307(Top 42%)3345(Top 29%)3345(Top 178%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21story building
+97ft-345ft

Overall

11218

Females

2473

F40-44

2473

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

11315

Females

2505

F40-44

2505

10K→15K

6.2 - 9.3 mi

Top 42%
×3story building
+67ft-78ft

Overall

11218

Females

2473

F40-44

2473

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

12115

Females

3038

F40-44

3038

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

12901

Females

3430

F40-44

3430

Half→25K

13.1 - 15.5 mi

Top 46%
×4story building
+66ft-88ft

Overall

12289

Females

3243

F40-44

3243

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

12071

Females

3220

F40-44

3220

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

11821

Females

3167

F40-44

3167

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

13126

Females

4007

F40-44

4007

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

13417

Females

4216

F40-44

4216

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

13360

Females

4264

F40-44

4264

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

12394

Females

3791

F40-44

3791

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12349

Females

3849

F40-44

3849

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12502

Females

3961

F40-44

3961

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11307

Females

3345

F40-44

3345

Passing Analysis

Category:
Athletes Passed
1281
Passed By
2076
Net Change
-795
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11078
5K → 10K256337-81#11078#11159
10K → 15K193186+7#11159#11152
15K → 20K98292-194#11152#11346
20K → Half1397-84#11346#11430
Half → 25K94173-79#11430#11509
25K → 30K148240-92#11509#11601
30K → 20M96102-6#11601#11607
20M → 21M56154-98#11607#11705
21M → 35K22104-82#11705#11787
35K → 23M70148-78#11787#11865
23M → 24M6080-20#11865#11885
24M → 40K64640#11885#11885
40K → 25.2M2836-8#11885#11893
25.2M → Finish8363+20#11893#11873
TOTALS12812076-795
📊

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