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BOSTON MARATHON 2026

Shannon Sides

Bib: 18045•F

MO

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 36%
Gender (Female)
#0 / 12578
Top 20%
Masters (Masters Women)
#0 / 6862
Top 7%
Age Group (F40-44)
#0 / 1737
Top 15%
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
23:18
3.11 mi
Rank: #12775
Start → 5K
23:18 | 7:30/mi
10K
45:40
6.21 mi
Rank: #11520 (+1255)
5K → 10K
22:22 | 7:12/mi
15K
1:08:03
9.32 mi
Rank: #11052 (+468)
10K → 15K
22:23 | 7:13/mi
20K
1:30:39
12.43 mi
Rank: #10760 (+292)
15K → 20K
22:36 | 7:17/mi
HALF
1:35:35
13.11 mi
Rank: #10732 (+28)
20K → HALF
4:56 | 7:15/mi
25K
1:53:28
15.53 mi
Rank: #10630 (+102)
HALF → 25K
17:53 | 7:23/mi
30K
2:16:56
18.64 mi
Rank: #10483 (+147)
25K → 30K
23:28 | 7:34/mi
20M
2:27:28
20.00 mi
Rank: #10516 (-33)
30K → 20M
10:32 | 7:46/mi
21M
2:35:31
21.00 mi
Rank: #10462 (+54)
20M → 21M
8:03 | 8:03/mi
35K
2:41:09
21.75 mi
Rank: #10472 (-10)
21M → 35K
5:38 | 7:32/mi
23M
2:50:54
23.00 mi
Rank: #10460 (+12)
35K → 23M
9:45 | 7:48/mi
24M
2:58:31
24.00 mi
Rank: #10460
23M → 24M
7:37 | 7:37/mi
40K
3:05:07
24.85 mi
Rank: #10434 (+26)
24M → 40K
6:36 | 7:44/mi
25.2M
3:08:05
25.20 mi
Rank: #10455 (-21)
40K → 25.2M
2:58 | 8:37/mi
FINISH
3:15:52
26.22 mi
Rank: #10507 (-52)
25.2M → FINISH
7:47 | 7:39/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:35:35
Pace7:18 /mi
2nd Half
Distance13.11 mi
Time1:40:17
Pace7:39 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:0423:187:3023:18
7:30
-
10K
6.21 mi11:47:2645:407:2122:22
7:12
-0:18
15K
9.32 mi12:09:491:08:037:1922:23
7:13
+0:01
20K
12.43 mi12:32:251:30:397:1822:36
7:17
+0:04
HALF
13.11 mi12:37:211:35:357:184:56
7:15
-0:02
25K
15.53 mi12:55:141:53:287:1917:53
7:23
+0:08
30K
18.64 mi13:18:422:16:567:2123:28
7:34
+0:11
20M
20.00 mi13:29:142:27:287:2310:32
7:46
+0:12
21M
21.00 mi13:37:172:35:317:258:03
8:03
+0:17
35K
21.75 mi13:42:552:41:097:255:38
7:32
-0:31
23M
23.00 mi13:52:402:50:547:269:45
7:48
+0:16
24M
24.00 mi14:00:172:58:317:277:37
7:37
-0:11
40K
24.85 mi14:06:533:05:077:276:36
7:44
+0:07
25.2M
25.20 mi14:09:513:08:057:282:58
8:37
+0:53
FINISH
26.22 mi14:17:383:15:527:297:47
7:39
-0:58

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

7:12 /mi

Average Pace

7:29 /mi

Slowest Pace

8:37 /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

3:04:51

94% of race

Time at Steady Pace

8:03

4% of race

Time at Slower Pace

2:58

2% of race

Average Pace: 7:28 /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 mi11:25:0423:187:3023:18
7:30
#12775
10K
6.21 mi11:47:2645:407:2122:22
7:12
#11520
15K
9.32 mi12:09:491:08:037:1922:23
7:13
#11052
20K
12.43 mi12:32:251:30:397:1822:36
7:17
#10760
HALF
13.11 mi12:37:211:35:357:184:56
7:15
#10732
25K
15.53 mi12:55:141:53:287:1917:53
7:23
#10630
30K
18.64 mi13:18:422:16:567:2123:28
7:34
#10483
20M
20.00 mi13:29:142:27:287:2310:32
7:46
#10516
21M
21.00 mi13:37:172:35:317:258:03
8:03
#10462
35K
21.75 mi13:42:552:41:097:255:38
7:32
#10472
23M
23.00 mi13:52:402:50:547:269:45
7:48
#10460
24M
24.00 mi14:00:172:58:317:277:37
7:37
#10460
40K
24.85 mi14:06:533:05:077:276:36
7:44
#10434
25.2M
25.20 mi14:09:513:08:057:282:58
8:37
#10455
FINISH
26.22 mi14:17:383:15:527:297:47
7:39
#10507
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 mi127753351335110194(Top 35%)2054(Top 16%)2054(Top 118%)
10K6.21 mi3.10 mi11520+12552676+6752676+67510279(Top 35%)2045(Top 16%)2045(Top 118%)
15K9.32 mi3.11 mi11052+4682449+2272449+22710194(Top 35%)2054(Top 16%)2054(Top 118%)
20K12.43 mi3.11 mi10760+2922345+1042345+1049969(Top 34%)2034(Top 16%)2034(Top 117%)
HALF13.11 mi0.68 mi10732+282330+152330+1510724(Top 37%)2348(Top 19%)2348(Top 135%)
25K15.53 mi2.42 mi10630+1022314+162314+1610387(Top 36%)2335(Top 19%)2335(Top 134%)
30K18.64 mi3.11 mi10483+1472288+262288+2610105(Top 35%)2317(Top 18%)2317(Top 133%)
20M20.00 mi1.36 mi10516-332327-392327-3911006(Top 38%)2887(Top 23%)2887(Top 166%)
21M21.00 mi1.00 mi10462+542325+22325+210257(Top 35%)2618(Top 21%)2618(Top 151%)
35K21.75 mi0.75 mi10472-102347-222347-2211120(Top 38%)3054(Top 24%)3054(Top 176%)
23M23.00 mi1.25 mi10460+122380-332380-3310971(Top 38%)3089(Top 25%)3089(Top 178%)
24M24.00 mi1.00 mi104602404-242404-2410982(Top 38%)3150(Top 25%)3150(Top 181%)
40K24.85 mi0.85 mi10434+262409-52409-510485(Top 36%)2994(Top 24%)2994(Top 172%)
25.2M25.20 mi0.35 mi10455-212431-222431-2212321(Top 42%)3997(Top 32%)3997(Top 230%)
FINISH26.22 mi1.02 mi10507-522470-392470-3912510(Top 43%)4121(Top 33%)4121(Top 237%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21
+97ft-345ft

Overall

10194

Females

2054

F40-44

2054

5K→10K

3.1 - 6.2 mi

Top 35%
×5
+79ft-138ft

Overall

10279

Females

2045

F40-44

2045

10K→15K

6.2 - 9.3 mi

Top 35%
×3
+67ft-78ft

Overall

10194

Females

2054

F40-44

2054

15K→20K

9.3 - 12.4 mi

Top 34%
×5
+106ft-86ft

Overall

9969

Females

2034

F40-44

2034

20K→HALF

12.4 - 13.1 mi

Top 37%
×2
+19ft-37ft

Overall

10724

Females

2348

F40-44

2348

HALF→25K

13.1 - 15.5 mi

Top 36%
×4
+66ft-88ft

Overall

10387

Females

2335

F40-44

2335

25K→30K

15.5 - 18.6 mi

Top 35%
×9
+181ft-148ft

Overall

10105

Females

2317

F40-44

2317

30K→20M

18.6 - 20.0 mi

Top 38%
×5
+64ft-50ft

Overall

11006

Females

2887

F40-44

2887

20M→21M

20.0 - 21.0 mi

Top 35%
×8
+106ft-24ft

Overall

10257

Females

2618

F40-44

2618

21M→35K

21.0 - 21.8 mi

Top 38%
×7
+17ft-86ft

Overall

11120

Females

3054

F40-44

3054

35K→23M

21.8 - 23.0 mi

Top 38%
×5
+23ft-63ft

Overall

10971

Females

3089

F40-44

3089

23M→24M

23.0 - 24.0 mi

Top 38%
×6
+12ft-82ft

Overall

10982

Females

3150

F40-44

3150

24M→40K

24.0 - 24.9 mi

Top 36%
×1
+6ft-20ft

Overall

10485

Females

2994

F40-44

2994

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1
+13ft-16ft

Overall

12321

Females

3997

F40-44

3997

25.2M→FINISH

25.2 - 26.2 mi

Top 43%
×2
+22ft-21ft

Overall

12510

Females

4121

F40-44

4121

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
3188*
Passed By
920
Net Change
+2268
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12775
5K → 10K1275*20+1255#12775#11520
10K → 15K497*29+468#11520#11052
15K → 20K330*38+292#11052#10760
20K → HALF4618+28#10760#10732
HALF → 25K18078+102#10732#10630
25K → 30K261*114+147#10630#10483
30K → 20M77110-33#10483#10516
20M → 21M12470+54#10516#10462
21M → 35K4858-10#10462#10472
35K → 23M116104+12#10472#10460
23M → 24M80800#10460#10460
24M → 40K8155+26#10460#10434
40K → 25.2M2546-21#10434#10455
25.2M → FINISH48100-52#10455#10507
TOTALS3188*920+2268

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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