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BOSTON MARATHON 2026

Mackenzie Smith

Bib: 20026•F

UT

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Age Group (F40-44)
#0 / 1737
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
25:12
3.11 mi
Rank: #17691
Start → 5K
25:12 | 8:07/mi
10K
50:31
6.21 mi
Rank: #17958 (-267)
5K → 10K
25:19 | 8:09/mi
15K
1:16:34
9.32 mi
Rank: #18493 (-535)
10K → 15K
26:03 | 8:24/mi
20K
1:43:23
12.43 mi
Rank: #18881 (-388)
15K → 20K
26:49 | 8:38/mi
HALF
1:49:13
13.11 mi
Rank: #18959 (-78)
20K → HALF
5:50 | 8:34/mi
25K
2:10:40
15.53 mi
Rank: #19222 (-263)
HALF → 25K
21:27 | 8:51/mi
30K
2:39:41
18.64 mi
Rank: #19596 (-374)
25K → 30K
29:01 | 9:21/mi
20M
2:52:48
20.00 mi
Rank: #19789 (-193)
30K → 20M
13:07 | 9:40/mi
21M
3:03:27
21.00 mi
Rank: #20004 (-215)
20M → 21M
10:39 | 10:39/mi
35K
3:10:44
21.75 mi
Rank: #20159 (-155)
21M → 35K
7:17 | 9:45/mi
23M
3:22:42
23.00 mi
Rank: #20222 (-63)
35K → 23M
11:58 | 9:34/mi
24M
3:32:16
24.00 mi
Rank: #20283 (-61)
23M → 24M
9:34 | 9:34/mi
40K
3:40:48
24.85 mi
Rank: #20362 (-79)
24M → 40K
8:32 | 9:59/mi
25.2M
3:44:21
25.20 mi
Rank: #20365 (-3)
40K → 25.2M
3:33 | 10:18/mi
FINISH
3:54:06
26.22 mi
Rank: #20490 (-125)
25.2M → FINISH
9:45 | 9:35/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:49:13
Pace8:20 /mi
2nd Half
Distance13.11 mi
Time2:04:53
Pace9:32 /mi
📊Positive Split: 14.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:10:0125:128:0725:12
8:07
-
10K
6.21 mi11:35:2050:318:0825:19
8:09
+0:02
15K
9.32 mi12:01:231:16:348:1326:03
8:24
+0:15
20K
12.43 mi12:28:121:43:238:2026:49
8:38
+0:14
HALF
13.11 mi12:34:021:49:138:205:50
8:34
-0:04
25K
15.53 mi12:55:292:10:408:2521:27
8:51
+0:17
30K
18.64 mi13:24:302:39:418:3429:01
9:21
+0:30
20M
20.00 mi13:37:372:52:488:3913:07
9:40
+0:19
21M
21.00 mi13:48:163:03:278:4510:39
10:39
+0:59
35K
21.75 mi13:55:333:10:448:477:17
9:45
-0:54
23M
23.00 mi14:07:313:22:428:4911:58
9:34
-0:11
24M
24.00 mi14:17:053:32:168:519:34
9:34
0:00
40K
24.85 mi14:25:373:40:488:548:32
9:59
+0:25
25.2M
25.20 mi14:29:103:44:218:553:33
10:18
+0:19
FINISH
26.22 mi14:38:553:54:068:579:45
9:35
-0:43

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:07 /mi

Average Pace

8:56 /mi

Slowest Pace

10:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:10:40

56% of race

Time at Steady Pace

1:20:42

34% of race

Time at Slower Pace

22:44

10% of race

Average Pace: 8:56 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:10:0125:128:0725:12
8:07
#17691
10K
6.21 mi11:35:2050:318:0825:19
8:09
#17958
15K
9.32 mi12:01:231:16:348:1326:03
8:24
#18493
20K
12.43 mi12:28:121:43:238:2026:49
8:38
#18881
HALF
13.11 mi12:34:021:49:138:205:50
8:34
#18959
25K
15.53 mi12:55:292:10:408:2521:27
8:51
#19222
30K
18.64 mi13:24:302:39:418:3429:01
9:21
#19596
20M
20.00 mi13:37:372:52:488:3913:07
9:40
#19789
21M
21.00 mi13:48:163:03:278:4510:39
10:39
#20004
35K
21.75 mi13:55:333:10:448:477:17
9:45
#20159
23M
23.00 mi14:07:313:22:428:4911:58
9:34
#20222
24M
24.00 mi14:17:053:32:168:519:34
9:34
#20283
40K
24.85 mi14:25:373:40:488:548:32
9:59
#20362
25.2M
25.20 mi14:29:103:44:218:553:33
10:18
#20365
FINISH
26.22 mi14:38:553:54:068:579:45
9:35
#20490
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi176916326632619487(Top 67%)7309(Top 58%)7309(Top 421%)
10K6.21 mi3.10 mi17958-2676474-1486474-14818290(Top 63%)6634(Top 53%)6634(Top 382%)
15K9.32 mi3.11 mi18493-5356756-2826756-28219487(Top 67%)7309(Top 58%)7309(Top 421%)
20K12.43 mi3.11 mi18881-3886992-2366992-23620058(Top 69%)7663(Top 61%)7663(Top 441%)
HALF13.11 mi0.68 mi18959-787043-517043-5120638(Top 71%)7938(Top 63%)7938(Top 457%)
25K15.53 mi2.42 mi19222-2637199-1567199-15620451(Top 70%)7894(Top 63%)7894(Top 454%)
30K18.64 mi3.11 mi19596-3747433-2347433-23421100(Top 73%)8310(Top 66%)8310(Top 478%)
20M20.00 mi1.36 mi19789-1937563-1307563-13021598(Top 74%)8645(Top 69%)8645(Top 498%)
21M21.00 mi1.00 mi20004-2157682-1197682-11922310(Top 77%)9050(Top 72%)9050(Top 521%)
35K21.75 mi0.75 mi20159-1557772-907772-9022454(Top 77%)9176(Top 73%)9176(Top 528%)
23M23.00 mi1.25 mi20222-637820-487820-4820802(Top 72%)8362(Top 66%)8362(Top 481%)
24M24.00 mi1.00 mi20283-617870-507870-5021564(Top 74%)8827(Top 70%)8827(Top 508%)
40K24.85 mi0.85 mi20362-797924-547924-5421869(Top 75%)9032(Top 72%)9032(Top 520%)
25.2M25.20 mi0.35 mi20365-37933-97933-920448(Top 70%)8299(Top 66%)8299(Top 478%)
FINISH26.22 mi1.02 mi20490-1258005-728005-7222585(Top 78%)9379(Top 75%)9379(Top 540%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21
+97ft-345ft

Overall

19487

Females

7309

F40-44

7309

5K→10K

3.1 - 6.2 mi

Top 63%
×5
+79ft-138ft

Overall

18290

Females

6634

F40-44

6634

10K→15K

6.2 - 9.3 mi

Top 67%
×3
+67ft-78ft

Overall

19487

Females

7309

F40-44

7309

15K→20K

9.3 - 12.4 mi

Top 69%
×5
+106ft-86ft

Overall

20058

Females

7663

F40-44

7663

20K→HALF

12.4 - 13.1 mi

Top 71%
×2
+19ft-37ft

Overall

20638

Females

7938

F40-44

7938

HALF→25K

13.1 - 15.5 mi

Top 70%
×4
+66ft-88ft

Overall

20451

Females

7894

F40-44

7894

25K→30K

15.5 - 18.6 mi

Top 73%
×9
+181ft-148ft

Overall

21100

Females

8310

F40-44

8310

30K→20M

18.6 - 20.0 mi

Top 74%
×5
+64ft-50ft

Overall

21598

Females

8645

F40-44

8645

20M→21M

20.0 - 21.0 mi

Top 77%
×8
+106ft-24ft

Overall

22310

Females

9050

F40-44

9050

21M→35K

21.0 - 21.8 mi

Top 77%
×7
+17ft-86ft

Overall

22454

Females

9176

F40-44

9176

35K→23M

21.8 - 23.0 mi

Top 72%
×5
+23ft-63ft

Overall

20802

Females

8362

F40-44

8362

23M→24M

23.0 - 24.0 mi

Top 74%
×6
+12ft-82ft

Overall

21564

Females

8827

F40-44

8827

24M→40K

24.0 - 24.9 mi

Top 75%
×1
+6ft-20ft

Overall

21869

Females

9032

F40-44

9032

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1
+13ft-16ft

Overall

20448

Females

8299

F40-44

8299

25.2M→FINISH

25.2 - 26.2 mi

Top 78%
×2
+22ft-21ft

Overall

22585

Females

9379

F40-44

9379

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
722
Passed By
3521
Net Change
-2799
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17691
5K → 10K166433-267#17691#17958
10K → 15K55590-535#17958#18493
15K → 20K60448-388#18493#18881
20K → HALF1593-78#18881#18959
HALF → 25K59322-263#18959#19222
25K → 30K94468-374#19222#19596
30K → 20M45238-193#19596#19789
20M → 21M36251-215#19789#20004
21M → 35K20175-155#20004#20159
35K → 23M55118-63#20159#20222
23M → 24M44105-61#20222#20283
24M → 40K33112-79#20283#20362
40K → 25.2M2023-3#20362#20365
25.2M → FINISH20145-125#20365#20490
TOTALS7223521-2799
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing