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BOSTON MARATHON 2026

Natacha Smith

Bib: 21215•F

NJ

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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
Top 40%
Age Group (F50-54)
#0 / 1233
Top 35%
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
24:47
3.11 mi
Rank: #16802
Start → 5K
24:47 | 7:59/mi
10K
50:36
6.21 mi
Rank: #18049 (-1247)
5K → 10K
25:49 | 8:19/mi
15K
1:16:22
9.32 mi
Rank: #18343 (-294)
10K → 15K
25:46 | 8:18/mi
20K
1:41:44
12.43 mi
Rank: #18089 (+254)
15K → 20K
25:22 | 8:10/mi
HALF
1:47:20
13.11 mi
Rank: #18096 (-7)
20K → HALF
5:36 | 8:13/mi
25K
2:07:50
15.53 mi
Rank: #18125 (-29)
HALF → 25K
20:30 | 8:28/mi
30K
2:34:37
18.64 mi
Rank: #17986 (+139)
25K → 30K
26:47 | 8:38/mi
20M
2:46:37
20.00 mi
Rank: #17967 (+19)
30K → 20M
12:00 | 8:51/mi
21M
2:56:03
21.00 mi
Rank: #17987 (-20)
20M → 21M
9:26 | 9:26/mi
35K
3:02:01
21.75 mi
Rank: #17842 (+145)
21M → 35K
5:58 | 7:59/mi
23M
3:13:02
23.00 mi
Rank: #17780 (+62)
35K → 23M
11:01 | 8:49/mi
24M
3:21:27
24.00 mi
Rank: #17722 (+58)
23M → 24M
8:25 | 8:25/mi
40K
3:28:49
24.85 mi
Rank: #17654 (+68)
24M → 40K
7:22 | 8:37/mi
25.2M
3:32:09
25.20 mi
Rank: #17638 (+16)
40K → 25.2M
3:20 | 9:40/mi
FINISH
3:40:18
26.22 mi
Rank: #17544 (+94)
25.2M → FINISH
8:09 | 8:00/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:47:20
Pace8:12 /mi
2nd Half
Distance13.11 mi
Time1:52:58
Pace8:38 /mi
📊Positive Split: 5.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:11:3024:477:5924:47
7:59
-
10K
6.21 mi11:37:1950:368:0925:49
8:19
+0:20
15K
9.32 mi12:03:051:16:228:1225:46
8:18
-0:01
20K
12.43 mi12:28:271:41:448:1225:22
8:10
-0:08
HALF
13.11 mi12:34:031:47:208:125:36
8:13
+0:03
25K
15.53 mi12:54:332:07:508:1420:30
8:28
+0:15
30K
18.64 mi13:21:202:34:378:1826:47
8:38
+0:10
20M
20.00 mi13:33:202:46:378:2012:00
8:51
+0:13
21M
21.00 mi13:42:462:56:038:249:26
9:26
+0:35
35K
21.75 mi13:48:443:02:018:235:58
7:59
-1:27
23M
23.00 mi13:59:453:13:028:2411:01
8:49
+0:50
24M
24.00 mi14:08:103:21:278:248:25
8:25
-0:24
40K
24.85 mi14:15:323:28:498:257:22
8:37
+0:12
25.2M
25.20 mi14:18:523:32:098:263:20
9:40
+1:03
FINISH
26.22 mi14:27:013:40:188:258:09
8:00
-1:40

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

7:59 /mi

Average Pace

8:25 /mi

Slowest Pace

9:40 /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

1:04:16

29% of race

Time at Steady Pace

2:00:15

55% of race

Time at Slower Pace

35:47

16% of race

Average Pace: 8:24 /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 mi11:11:3024:477:5924:47
7:59
#16802
10K
6.21 mi11:37:1950:368:0925:49
8:19
#18049
15K
9.32 mi12:03:051:16:228:1225:46
8:18
#18343
20K
12.43 mi12:28:271:41:448:1225:22
8:10
#18089
HALF
13.11 mi12:34:031:47:208:125:36
8:13
#18096
25K
15.53 mi12:54:332:07:508:1420:30
8:28
#18125
30K
18.64 mi13:21:202:34:378:1826:47
8:38
#17986
20M
20.00 mi13:33:202:46:378:2012:00
8:51
#17967
21M
21.00 mi13:42:462:56:038:249:26
9:26
#17987
35K
21.75 mi13:48:443:02:018:235:58
7:59
#17842
23M
23.00 mi13:59:453:13:028:2411:01
8:49
#17780
24M
24.00 mi14:08:103:21:278:248:25
8:25
#17722
40K
24.85 mi14:15:323:28:498:257:22
8:37
#17654
25.2M
25.20 mi14:18:523:32:098:263:20
9:40
#17638
FINISH
26.22 mi14:27:013:40:188:258:09
8:00
#17544
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi168025804580418948(Top 65%)7010(Top 56%)7010(Top 569%)
10K6.21 mi3.10 mi18049-12476525-7216525-72119241(Top 66%)7157(Top 57%)7157(Top 580%)
15K9.32 mi3.11 mi18343-2946676-1516676-15118948(Top 65%)7010(Top 56%)7010(Top 569%)
20K12.43 mi3.11 mi18089+2546535+1416535+14117280(Top 60%)6097(Top 48%)6097(Top 494%)
HALF13.11 mi0.68 mi18096-76540-56540-518519(Top 64%)6768(Top 54%)6768(Top 549%)
25K15.53 mi2.42 mi18125-296569-296569-2918309(Top 63%)6745(Top 54%)6745(Top 547%)
30K18.64 mi3.11 mi17986+1396529+406529+4017590(Top 61%)6443(Top 51%)6443(Top 523%)
20M20.00 mi1.36 mi17967+196541-126541-1218150(Top 63%)6836(Top 54%)6836(Top 554%)
21M21.00 mi1.00 mi17987-206571-306571-3018226(Top 63%)6900(Top 55%)6900(Top 560%)
35K21.75 mi0.75 mi17842+1456496+756496+7514404(Top 50%)4878(Top 39%)4878(Top 396%)
23M23.00 mi1.25 mi17780+626495+16495+117472(Top 60%)6675(Top 53%)6675(Top 541%)
24M24.00 mi1.00 mi17722+586473+226473+2216430(Top 57%)6154(Top 49%)6154(Top 499%)
40K24.85 mi0.85 mi17654+686449+246449+2416413(Top 57%)6204(Top 49%)6204(Top 503%)
25.2M25.20 mi0.35 mi17638+166456-76456-718122(Top 62%)7100(Top 56%)7100(Top 576%)
FINISH26.22 mi1.02 mi17544+946425+316425+3115207(Top 52%)5539(Top 44%)5539(Top 449%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21
+97ft-345ft

Overall

18948

Females

7010

F50-54

7010

5K→10K

3.1 - 6.2 mi

Top 66%
×5
+79ft-138ft

Overall

19241

Females

7157

F50-54

7157

10K→15K

6.2 - 9.3 mi

Top 65%
×3
+67ft-78ft

Overall

18948

Females

7010

F50-54

7010

15K→20K

9.3 - 12.4 mi

Top 60%
×5
+106ft-86ft

Overall

17280

Females

6097

F50-54

6097

20K→HALF

12.4 - 13.1 mi

Top 64%
×2
+19ft-37ft

Overall

18519

Females

6768

F50-54

6768

HALF→25K

13.1 - 15.5 mi

Top 63%
×4
+66ft-88ft

Overall

18309

Females

6745

F50-54

6745

25K→30K

15.5 - 18.6 mi

Top 61%
×9
+181ft-148ft

Overall

17590

Females

6443

F50-54

6443

30K→20M

18.6 - 20.0 mi

Top 63%
×5
+64ft-50ft

Overall

18150

Females

6836

F50-54

6836

20M→21M

20.0 - 21.0 mi

Top 63%
×8
+106ft-24ft

Overall

18226

Females

6900

F50-54

6900

21M→35K

21.0 - 21.8 mi

Top 50%
×7
+17ft-86ft

Overall

14404

Females

4878

F50-54

4878

35K→23M

21.8 - 23.0 mi

Top 60%
×5
+23ft-63ft

Overall

17472

Females

6675

F50-54

6675

23M→24M

23.0 - 24.0 mi

Top 57%
×6
+12ft-82ft

Overall

16430

Females

6154

F50-54

6154

24M→40K

24.0 - 24.9 mi

Top 57%
×1
+6ft-20ft

Overall

16413

Females

6204

F50-54

6204

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1
+13ft-16ft

Overall

18122

Females

7100

F50-54

7100

25.2M→FINISH

25.2 - 26.2 mi

Top 52%
×2
+22ft-21ft

Overall

15207

Females

5539

F50-54

5539

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1615
Passed By
2357
Net Change
-742
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16802
5K → 10K201267-1247#16802#18049
10K → 15K85379-294#18049#18343
15K → 20K30854+254#18343#18089
20K → HALF2633-7#18089#18096
HALF → 25K117146-29#18096#18125
25K → 30K247108+139#18125#17986
30K → 20M10990+19#17986#17967
20M → 21M7393-20#17967#17987
21M → 35K1483+145#17987#17842
35K → 23M11755+62#17842#17780
23M → 24M9032+58#17780#17722
24M → 40K10739+68#17722#17654
40K → 25.2M4731+16#17654#17638
25.2M → FINISH12127+94#17638#17544
TOTALS16152357-742
📊

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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Export & Support

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing