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BOSTON MARATHON 2023

Mercedes Baltazar Chavez

Bib: 18450 F MX

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 48%
Gender (Female)
#0 / 11423
Top 31%
Masters (Masters Women)
#0 / 6539
Top 18%
Division (F50-54)
#0 / 1207
Top 10%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:07/mi
25:12
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:44/mi
49:13
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:47/mi
1:13:24
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:47/mi
1:37:36
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:45/mi
1:42:53
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:10/mi
2:05:07
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:26/mi
2:31:20
↑ 181↓ 1480.2%
138 ft elev
20M
8:09/mi
2:42:25
↑ 64↓ 500.2%
148 ft elev
21M
8:23/mi
2:50:48
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:55/mi
2:56:43
↑ 17↓ 861.7%
156 ft elev
23M
7:43/mi
3:06:23
↑ 23↓ 630.6%
116 ft elev
24M
7:42/mi
3:14:05
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:44/mi
3:20:42
↓ 200.3%
20 ft elev
25.2M
8:27/mi
3:23:37
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:14/mi
3:32:00
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:42:537:51 /mi⚡ faster
2nd Half
1:49:078:19 /mi+6.1%
Positive split — 6.1% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
25:128:073.11 mi25:12
8:07
-
10K
49:137:553.10 mi24:01
7:44
-0:23
15K
1:13:247:533.11 mi24:11
7:47
+0:03
20K
1:37:367:513.11 mi24:12
7:47
0:00
Half(13.11 mi)
1:42:537:510.68 mi5:17
7:45
-0:02
25K
2:05:078:032.42 mi22:14
9:10
+1:25
30K
2:31:208:073.11 mi26:13
8:26
-0:44
20M
2:42:258:071.36 mi11:05
8:09
-0:17
21M
2:50:488:081.00 mi8:23
8:23
+0:14
35K
2:56:438:080.75 mi5:55
7:55
-0:28
23M
3:06:238:061.25 mi9:40
7:43
-0:12
24M
3:14:058:051.00 mi7:42
7:42
-0:01
40K
3:20:428:040.85 mi6:37
7:44
+0:02
25.2M
3:23:378:050.35 mi2:55
8:27
+0:43
Finish(26.22 mi)
3:32:008:051.02 mi8:23
8:14
-0:13
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:42 /mi

Average Pace

8:05 /mi

Slowest Pace

9:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

3:09:46

90% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

22:14

10% of race

Average Pace: 8:05 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi14797451145111261032453245
10K3.10 mi13753+10443899+6123899+6121252831673167
15K3.11 mi13374+3793677+2223677+2221261032453245
20K3.11 mi12891+4833417+2603417+2601166727782778
Half(13.11 mi)0.68 mi12838+533385+323385+321232231143114
25K2.42 mi14302-14644283-8984283-8981971375357535
30K3.11 mi14231+714284-14284-11392342844284
20M1.36 mi14011+2204173+1114173+1111142729622962
21M1.00 mi13721+2904002+1714002+171978322922292
35K0.75 mi13617+1043953+493953+491151831583158
23M1.25 mi13222+3953747+2063747+206791215591559
24M1.00 mi13036+1863674+733674+73913321772177
40K0.85 mi12844+1923578+963578+96830318851885
25.2M0.35 mi12789+553552+263552+26936524242424
Finish(26.22 mi)1.02 mi12804-153585-333585-331363145374537

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

12610

Females

3245

F50-54

3245

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

12528

Females

3167

F50-54

3167

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

12610

Females

3245

F50-54

3245

15K→20K

9.3 - 12.4 mi

Top 44%
×5story building
+106ft-86ft

Overall

11667

Females

2778

F50-54

2778

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

12322

Females

3114

F50-54

3114

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

19713

Females

7535

F50-54

7535

25K→30K

15.5 - 18.6 mi

Top 52%
×9story building
+181ft-148ft

Overall

13923

Females

4284

F50-54

4284

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

11427

Females

2962

F50-54

2962

20M→21M

20.0 - 21.0 mi

Top 37%
×8story building
+106ft-24ft

Overall

9783

Females

2292

F50-54

2292

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

11518

Females

3158

F50-54

3158

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

7912

Females

1559

F50-54

1559

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

9133

Females

2177

F50-54

2177

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8303

Females

1885

F50-54

1885

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9365

Females

2424

F50-54

2424

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2story building
+22ft-21ft

Overall

13631

Females

4537

F50-54

4537

Passing Analysis

Category:
Passed
3873
Passed By
1880
Net Change
+1993
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14797
5K → 10K109753+1044#14797#13753
10K → 15K43556+379#13753#13374
15K → 20K50522+483#13374#12891
20K → Half6613+53#12891#12838
Half → 25K81472-1464#12838#14302
25K → 30K225154+71#14302#14231
30K → 20M2299+220#14231#14011
20M → 21M2944+290#14011#13721
21M → 35K11511+104#13721#13617
35K → 23M3961+395#13617#13222
23M → 24M1915+186#13222#13036
24M → 40K1997+192#13036#12844
40K → 25.2M572+55#12844#12789
25.2M → Finish5671-15#12789#12804
TOTALS38731880+1993

Passing Charts

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