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BOSTON MARATHON 2024

Mackenzie Vlachos

Bib: 25238•F

MA

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 45%
Gender (Female)
#0 / 10924
Top 31%
Division (F18-39)
#0 / 4660
Top 48%
Race Day Weather
55°/45°F
scattered clouds

⏱️ 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
8:06/mi
25:11
↑ 97↓ 3451.5%
10K· 6.21 mi
8:01/mi
50:04
↑ 79↓ 1380.4%
15K· 9.32 mi
8:08/mi
1:15:20
↑ 67↓ 78
20K· 12.43 mi
8:16/mi
1:41:00
↑ 106↓ 860.1%
Half· 13.11 mi
7:53/mi
1:46:23
↑ 19↓ 370.5%
25K· 15.53 mi
8:17/mi
2:06:29
↑ 66↓ 880.2%
30K· 18.64 mi
8:37/mi
2:33:15
↑ 181↓ 1480.2%
20M
8:37/mi
2:44:58
↑ 64↓ 500.2%
21M
9:11/mi
2:54:09
↑ 106↓ 241.6%
35K· 21.75 mi
8:20/mi
3:00:23
↑ 17↓ 861.7%
23M
8:34/mi
3:11:07
↑ 23↓ 630.6%
24M
8:22/mi
3:19:29
↓ 821.3%
40K· 24.85 mi
8:12/mi
3:26:30
↓ 200.3%
25.2M
9:17/mi
3:29:42
↑ 13↓ 160.2%
Finish· 26.22 mi
7:54/mi
3:37:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:23
Pace8:07 /mi
2nd Half
Distance13.11 mi
Time1:51:22
Pace8:30 /mi
📊Positive Split: 4.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:40:5625:118:0625:11
8:06
-
10K
6.21 mi12:05:4950:048:0324:53
8:01
-0:05
15K
9.32 mi12:31:051:15:208:0525:16
8:08
+0:07
20K
12.43 mi12:56:451:41:008:0825:40
8:16
+0:08
Half
13.11 mi13:02:081:46:238:075:23
7:53
-0:23
25K
15.53 mi13:22:142:06:298:0920:06
8:17
+0:24
30K
18.64 mi13:49:002:33:158:1326:46
8:37
+0:20
20M
20.00 mi14:00:432:44:588:1511:43
8:37
0:00
21M
21.00 mi14:09:542:54:098:189:11
9:11
+0:34
35K
21.75 mi14:16:083:00:238:186:14
8:20
-0:51
23M
23.00 mi14:26:523:11:078:1910:44
8:34
+0:14
24M
24.00 mi14:35:143:19:298:198:22
8:22
-0:12
40K
24.85 mi14:42:153:26:308:187:01
8:12
-0:10
25.2M
25.20 mi14:45:273:29:428:193:12
9:17
+1:05
Finish
26.22 mi14:53:303:37:458:198:03
7:54
-1:23

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

7:53 /mi

Average Pace

8:19 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:25:22

94% of race

Time at Steady Pace

12:23

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:18 /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 mi11:40:5625:118:0625:11
8:06
#15420
10K
6.21 mi12:05:4950:048:0324:53
8:01
#14830
15K
9.32 mi12:31:051:15:208:0525:16
8:08
#14598
20K
12.43 mi12:56:451:41:008:0825:40
8:16
#14236
Half
13.11 mi13:02:081:46:238:075:23
7:53
#14107
25K
15.53 mi13:22:142:06:298:0920:06
8:17
#13687
30K
18.64 mi13:49:002:33:158:1326:46
8:37
#13100
20M
20.00 mi14:00:432:44:588:1511:43
8:37
#12800
21M
21.00 mi14:09:542:54:098:189:11
9:11
#12561
35K
21.75 mi14:16:083:00:238:186:14
8:20
#12451
23M
23.00 mi14:26:523:11:078:1910:44
8:34
#12159
24M
24.00 mi14:35:143:19:298:198:22
8:22
#11977
40K
24.85 mi14:42:153:26:308:187:01
8:12
#11713
25.2M
25.20 mi14:45:273:29:428:193:12
9:17
#11629
Finish
26.22 mi14:53:303:37:458:198:03
7:54
#11425
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi154205199519914306(Top 56%)4548(Top 42%)4548(Top 98%)
10K6.21 mi3.10 mi14830+5904836+3634836+36314289(Top 56%)4501(Top 41%)4501(Top 97%)
15K9.32 mi3.11 mi14598+2324700+1364700+13614306(Top 56%)4548(Top 42%)4548(Top 98%)
20K12.43 mi3.11 mi14236+3624503+1974503+19713503(Top 53%)4122(Top 38%)4122(Top 88%)
Half13.11 mi0.68 mi14107+1294430+734430+7312023(Top 47%)3349(Top 31%)3349(Top 72%)
25K15.53 mi2.42 mi13687+4204205+2254205+22511920(Top 47%)3472(Top 32%)3472(Top 75%)
30K18.64 mi3.11 mi13100+5873975+2303975+23011258(Top 44%)3321(Top 30%)3321(Top 71%)
20M20.00 mi1.36 mi12800+3003855+1203855+12010125(Top 40%)3016(Top 28%)3016(Top 65%)
21M21.00 mi1.00 mi12561+2393779+763779+769454(Top 37%)2930(Top 27%)2930(Top 63%)
35K21.75 mi0.75 mi12451+1103766+133766+139810(Top 38%)3126(Top 29%)3126(Top 67%)
23M23.00 mi1.25 mi12159+2923665+1013665+1018890(Top 35%)2823(Top 26%)2823(Top 61%)
24M24.00 mi1.00 mi11977+1823609+563609+568694(Top 34%)2806(Top 26%)2806(Top 60%)
40K24.85 mi0.85 mi11713+2643515+943515+946875(Top 27%)2077(Top 19%)2077(Top 45%)
25.2M25.20 mi0.35 mi11629+843487+283487+287884(Top 31%)2622(Top 24%)2622(Top 56%)
Finish26.22 mi1.02 mi11425+2043427+603427+607968(Top 31%)2568(Top 24%)2568(Top 55%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21story building
+97ft-345ft

Overall

14306

Females

4548

F18-39

4548

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

14289

Females

4501

F18-39

4501

10K→15K

6.2 - 9.3 mi

Top 56%
×3story building
+67ft-78ft

Overall

14306

Females

4548

F18-39

4548

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

13503

Females

4122

F18-39

4122

20K→Half

12.4 - 13.1 mi

Top 47%
×2story building
+19ft-37ft

Overall

12023

Females

3349

F18-39

3349

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

11920

Females

3472

F18-39

3472

25K→30K

15.5 - 18.6 mi

Top 44%
×9story building
+181ft-148ft

Overall

11258

Females

3321

F18-39

3321

30K→20M

18.6 - 20.0 mi

Top 40%
×5story building
+64ft-50ft

Overall

10125

Females

3016

F18-39

3016

20M→21M

20.0 - 21.0 mi

Top 37%
×8story building
+106ft-24ft

Overall

9454

Females

2930

F18-39

2930

21M→35K

21.0 - 21.8 mi

Top 38%
×7story building
+17ft-86ft

Overall

9810

Females

3126

F18-39

3126

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

8890

Females

2823

F18-39

2823

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

8694

Females

2806

F18-39

2806

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

6875

Females

2077

F18-39

2077

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

7884

Females

2622

F18-39

2622

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2story building
+22ft-21ft

Overall

7968

Females

2568

F18-39

2568

Passing Analysis

Category:
Athletes Passed
4444
Passed By
449
Net Change
+3995
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15420
5K → 10K66070+590#15420#14830
10K → 15K353121+232#14830#14598
15K → 20K44078+362#14598#14236
20K → Half1323+129#14236#14107
Half → 25K44727+420#14107#13687
25K → 30K63043+587#13687#13100
30K → 20M32121+300#13100#12800
20M → 21M26223+239#12800#12561
21M → 35K12616+110#12561#12451
35K → 23M30412+292#12451#12159
23M → 24M19513+182#12159#11977
24M → 40K2640+264#11977#11713
40K → 25.2M9511+84#11713#11629
25.2M → Finish21511+204#11629#11425
TOTALS4444449+3995
📊

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