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BOSTON MARATHON 2026

Mackenzie Howard

Bib: 10300•F

CT

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0:00
0:00
/ mi
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Overall
#0 / 29021
Top 18%
Gender (Female)
#0 / 12578
Top 4%
Age Group (F18-39)
#0 / 5716
Top 8%
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
20:47
3.11 mi
Rank: #5808
Start → 5K
20:47 | 6:42/mi
10K
41:39
6.21 mi
Rank: #5937 (-129)
5K → 10K
20:52 | 6:43/mi
15K
1:02:32
9.32 mi
Rank: #5918 (+19)
10K → 15K
20:53 | 6:44/mi
20K
1:23:27
12.43 mi
Rank: #5768 (+150)
15K → 20K
20:55 | 6:44/mi
HALF
1:28:00
13.11 mi
Rank: #5767 (+1)
20K → HALF
4:33 | 6:41/mi
25K
1:44:21
15.53 mi
Rank: #5659 (+108)
HALF → 25K
16:21 | 6:45/mi
30K
2:06:04
18.64 mi
Rank: #5670 (-11)
25K → 30K
21:43 | 7:00/mi
20M
2:15:34
20.00 mi
Rank: #5642 (+28)
30K → 20M
9:30 | 7:00/mi
21M
2:22:50
21.00 mi
Rank: #5589 (+53)
20M → 21M
7:16 | 7:16/mi
35K
2:28:00
21.75 mi
Rank: #5594 (-5)
21M → 35K
5:10 | 6:55/mi
23M
2:36:49
23.00 mi
Rank: #5575 (+19)
35K → 23M
8:49 | 7:03/mi
24M
2:43:37
24.00 mi
Rank: #5533 (+42)
23M → 24M
6:48 | 6:48/mi
40K
2:49:34
24.85 mi
Rank: #5512 (+21)
24M → 40K
5:57 | 6:58/mi
25.2M
2:52:02
25.20 mi
Rank: #5450 (+62)
40K → 25.2M
2:28 | 7:10/mi
FINISH
2:58:30
26.22 mi
Rank: #5296 (+154)
25.2M → FINISH
6:28 | 6:21/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:28:00
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:30:30
Pace6:55 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:37:3320:476:4220:47
6:42
-
10K
6.21 mi10:58:2541:396:4320:52
6:43
+0:01
15K
9.32 mi11:19:181:02:326:4320:53
6:44
+0:01
20K
12.43 mi11:40:131:23:276:4320:55
6:44
0:00
HALF
13.11 mi11:44:461:28:006:434:33
6:41
-0:03
25K
15.53 mi12:01:071:44:216:4416:21
6:45
+0:04
30K
18.64 mi12:22:502:06:046:4621:43
7:00
+0:15
20M
20.00 mi12:32:202:15:346:479:30
7:00
0:00
21M
21.00 mi12:39:362:22:506:497:16
7:16
+0:16
35K
21.75 mi12:44:462:28:006:495:10
6:55
-0:21
23M
23.00 mi12:53:352:36:496:508:49
7:03
+0:08
24M
24.00 mi13:00:232:43:376:506:48
6:48
-0:15
40K
24.85 mi13:06:202:49:346:505:57
6:58
+0:10
25.2M
25.20 mi13:08:482:52:026:502:28
7:10
+0:12
FINISH
26.22 mi13:15:162:58:306:496:28
6:21
-0:49

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

6:21 /mi

Average Pace

6:49 /mi

Slowest Pace

7:16 /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

2:08:44

72% of race

Time at Steady Pace

49:46

28% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:48 /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 mi10:37:3320:476:4220:47
6:42
#5808
10K
6.21 mi10:58:2541:396:4320:52
6:43
#5937
15K
9.32 mi11:19:181:02:326:4320:53
6:44
#5918
20K
12.43 mi11:40:131:23:276:4320:55
6:44
#5768
HALF
13.11 mi11:44:461:28:006:434:33
6:41
#5767
25K
15.53 mi12:01:071:44:216:4416:21
6:45
#5659
30K
18.64 mi12:22:502:06:046:4621:43
7:00
#5670
20M
20.00 mi12:32:202:15:346:479:30
7:00
#5642
21M
21.00 mi12:39:362:22:506:497:16
7:16
#5589
35K
21.75 mi12:44:462:28:006:495:10
6:55
#5594
23M
23.00 mi12:53:352:36:496:508:49
7:03
#5575
24M
24.00 mi13:00:232:43:376:506:48
6:48
#5533
40K
24.85 mi13:06:202:49:346:505:57
6:58
#5512
25.2M
25.20 mi13:08:482:52:026:502:28
7:10
#5450
FINISH
26.22 mi13:15:162:58:306:496:28
6:21
#5296
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi58084744746048(Top 21%)567(Top 5%)567(Top 10%)
10K6.21 mi3.10 mi5937-129500-26500-266149(Top 21%)558(Top 4%)558(Top 10%)
15K9.32 mi3.11 mi5918+19494+6494+66048(Top 21%)567(Top 5%)567(Top 10%)
20K12.43 mi3.11 mi5768+150466+28466+285516(Top 19%)467(Top 4%)467(Top 8%)
HALF13.11 mi0.68 mi5767+1469-3469-36021(Top 21%)580(Top 5%)580(Top 10%)
25K15.53 mi2.42 mi5659+108464+5464+55286(Top 18%)456(Top 4%)456(Top 8%)
30K18.64 mi3.11 mi5670-11496-32496-325833(Top 20%)641(Top 5%)641(Top 11%)
20M20.00 mi1.36 mi5642+28500-4500-45528(Top 19%)614(Top 5%)614(Top 11%)
21M21.00 mi1.00 mi5589+53496+4496+45088(Top 18%)610(Top 5%)610(Top 11%)
35K21.75 mi0.75 mi5594-5511-15511-156471(Top 22%)964(Top 8%)964(Top 17%)
23M23.00 mi1.25 mi5575+19518-7518-75769(Top 20%)804(Top 6%)804(Top 14%)
24M24.00 mi1.00 mi5533+425185185159(Top 18%)686(Top 5%)686(Top 12%)
40K24.85 mi0.85 mi5512+21521-3521-35285(Top 18%)777(Top 6%)777(Top 14%)
25.2M25.20 mi0.35 mi5450+62513+8513+83446(Top 12%)393(Top 3%)393(Top 7%)
FINISH26.22 mi1.02 mi5296+154493+20493+203289(Top 11%)368(Top 3%)368(Top 6%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21
+97ft-345ft

Overall

6048

Females

567

F18-39

567

5K→10K

3.1 - 6.2 mi

Top 21%
×5
+79ft-138ft

Overall

6149

Females

558

F18-39

558

10K→15K

6.2 - 9.3 mi

Top 21%
×3
+67ft-78ft

Overall

6048

Females

567

F18-39

567

15K→20K

9.3 - 12.4 mi

Top 19%
×5
+106ft-86ft

Overall

5516

Females

467

F18-39

467

20K→HALF

12.4 - 13.1 mi

Top 21%
×2
+19ft-37ft

Overall

6021

Females

580

F18-39

580

HALF→25K

13.1 - 15.5 mi

Top 18%
×4
+66ft-88ft

Overall

5286

Females

456

F18-39

456

25K→30K

15.5 - 18.6 mi

Top 20%
×9
+181ft-148ft

Overall

5833

Females

641

F18-39

641

30K→20M

18.6 - 20.0 mi

Top 19%
×5
+64ft-50ft

Overall

5528

Females

614

F18-39

614

20M→21M

20.0 - 21.0 mi

Top 18%
×8
+106ft-24ft

Overall

5088

Females

610

F18-39

610

21M→35K

21.0 - 21.8 mi

Top 22%
×7
+17ft-86ft

Overall

6471

Females

964

F18-39

964

35K→23M

21.8 - 23.0 mi

Top 20%
×5
+23ft-63ft

Overall

5769

Females

804

F18-39

804

23M→24M

23.0 - 24.0 mi

Top 18%
×6
+12ft-82ft

Overall

5159

Females

686

F18-39

686

24M→40K

24.0 - 24.9 mi

Top 18%
×1
+6ft-20ft

Overall

5285

Females

777

F18-39

777

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1
+13ft-16ft

Overall

3446

Females

393

F18-39

393

25.2M→FINISH

25.2 - 26.2 mi

Top 11%
×2
+22ft-21ft

Overall

3289

Females

368

F18-39

368

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Position interactions are being recalculated

Started about 5 hours ago. This usually takes 10-20 minutes. Please check back shortly.

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