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BOSTON MARATHON 2025

Robyn Shelton

Bib: 17827•F

UT

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 36%
Gender (Female)
#0 / 12228
Top 19%
Division (F18-39)
#0 / 5469
Top 33%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:38
Rank: #15991
Start → 5K
24:38 | 7:56/mi
10K· 6.21 mi
48:41
Rank: #15093 (+898)
5K → 10K
24:03 | 7:44/mi
15K· 9.32 mi
1:11:18
Rank: #13312 (+1781)
10K → 15K
22:37 | 7:17/mi
20K· 12.43 mi
1:34:17
Rank: #12373 (+939)
15K → 20K
22:59 | 7:24/mi
Half· 13.11 mi
1:39:16
Rank: #12269 (+104)
20K → Half
4:59 | 7:18/mi
25K· 15.53 mi
1:57:20
Rank: #11795 (+474)
Half → 25K
18:04 | 7:27/mi
30K· 18.64 mi
2:21:53
Rank: #11517 (+278)
25K → 30K
24:33 | 7:54/mi
20M
2:32:47
Rank: #11402 (+115)
30K → 20M
10:54 | 8:01/mi
21M
2:40:59
Rank: #11202 (+200)
20M → 21M
8:12 | 8:12/mi
35K· 21.75 mi
2:46:15
Rank: #10959 (+243)
21M → 35K
5:16 | 7:02/mi
23M
2:55:42
Rank: #10657 (+302)
35K → 23M
9:27 | 7:33/mi
24M
3:03:05
Rank: #10466 (+191)
23M → 24M
7:23 | 7:23/mi
40K· 24.85 mi
3:09:33
Rank: #10292 (+174)
24M → 40K
6:28 | 7:34/mi
25.2M
3:12:21
Rank: #10199 (+93)
40K → 25.2M
2:48 | 8:07/mi
Finish· 26.22 mi
3:20:01
Rank: #10157 (+42)
25.2M → Finish
7:40 | 7:31/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:16
Pace7:34 /mi
2nd Half
Distance13.11 mi
Time1:40:45
Pace7:41 /mi
📊Positive Split: 1.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:1624:387:5624:38
7:56
-
10K
6.21 mi11:43:1948:417:5024:03
7:44
-0:12
15K
9.32 mi12:05:561:11:187:3922:37
7:17
-0:27
20K
12.43 mi12:28:551:34:177:3522:59
7:24
+0:07
Half
13.11 mi12:33:541:39:167:344:59
7:18
-0:06
25K
15.53 mi12:51:581:57:207:3318:04
7:27
+0:09
30K
18.64 mi13:16:312:21:537:3724:33
7:54
+0:27
20M
20.00 mi13:27:252:32:477:3810:54
8:01
+0:07
21M
21.00 mi13:35:372:40:597:408:12
8:12
+0:11
35K
21.75 mi13:40:532:46:157:395:16
7:02
-1:10
23M
23.00 mi13:50:202:55:427:389:27
7:33
+0:31
24M
24.00 mi13:57:433:03:057:387:23
7:23
-0:10
40K
24.85 mi14:04:113:09:337:386:28
7:34
+0:11
25.2M
25.20 mi14:06:593:12:217:382:48
8:07
+0:33
Finish
26.22 mi14:14:393:20:017:387:40
7:31
-0:36

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

7:02 /mi

Average Pace

7:38 /mi

Slowest Pace

8:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:08:56

64% of race

Time at Steady Pace

1:11:05

36% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:38 /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 mi11:19:1624:387:5624:38
7:56
#15991
10K
6.21 mi11:43:1948:417:5024:03
7:44
#15093
15K
9.32 mi12:05:561:11:187:3922:37
7:17
#13312
20K
12.43 mi12:28:551:34:177:3522:59
7:24
#12373
Half
13.11 mi12:33:541:39:167:344:59
7:18
#12269
25K
15.53 mi12:51:581:57:207:3318:04
7:27
#11795
30K
18.64 mi13:16:312:21:537:3724:33
7:54
#11517
20M
20.00 mi13:27:252:32:477:3810:54
8:01
#11402
21M
21.00 mi13:35:372:40:597:408:12
8:12
#11202
35K
21.75 mi13:40:532:46:157:395:16
7:02
#10959
23M
23.00 mi13:50:202:55:427:389:27
7:33
#10657
24M
24.00 mi13:57:433:03:057:387:23
7:23
#10466
40K
24.85 mi14:04:113:09:337:386:28
7:34
#10292
25.2M
25.20 mi14:06:593:12:217:382:48
8:07
#10199
Finish
26.22 mi14:14:393:20:017:387:40
7:31
#10157
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi15991513951399848(Top 35%)1825(Top 15%)1825(Top 33%)
10K6.21 mi3.10 mi15093+8984595+5444595+54414260(Top 50%)4106(Top 34%)4106(Top 75%)
15K9.32 mi3.11 mi13312+17813580+10153580+10159848(Top 35%)1825(Top 15%)1825(Top 33%)
20K12.43 mi3.11 mi12373+9393071+5093071+5099903(Top 35%)1913(Top 16%)1913(Top 35%)
Half13.11 mi0.68 mi12269+1043020+513020+5110119(Top 36%)2025(Top 17%)2025(Top 37%)
25K15.53 mi2.42 mi11795+4742815+2052815+2059574(Top 34%)1916(Top 16%)1916(Top 35%)
30K18.64 mi3.11 mi11517+2782743+722743+7210654(Top 38%)2619(Top 21%)2619(Top 48%)
20M20.00 mi1.36 mi11402+1152722+212722+2110589(Top 37%)2727(Top 22%)2727(Top 50%)
21M21.00 mi1.00 mi11202+2002660+622660+628625(Top 30%)1999(Top 16%)1999(Top 37%)
35K21.75 mi0.75 mi10959+2432551+1092551+1095714(Top 20%)849(Top 7%)849(Top 16%)
23M23.00 mi1.25 mi10657+3022436+1152436+1156943(Top 24%)1381(Top 11%)1381(Top 25%)
24M24.00 mi1.00 mi10466+1912369+672369+676987(Top 25%)1457(Top 12%)1457(Top 27%)
40K24.85 mi0.85 mi10292+1742324+452324+457229(Top 25%)1659(Top 14%)1659(Top 30%)
25.2M25.20 mi0.35 mi10199+932291+332291+336694(Top 24%)1522(Top 12%)1522(Top 28%)
Finish26.22 mi1.02 mi10157+422299-82299-89380(Top 33%)2708(Top 22%)2708(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9848

Females

1825

F18-39

1825

5K→10K

3.1 - 6.2 mi

Top 50%
×5stories
+79ft-138ft

Overall

14260

Females

4106

F18-39

4106

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9848

Females

1825

F18-39

1825

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9903

Females

1913

F18-39

1913

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

10119

Females

2025

F18-39

2025

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9574

Females

1916

F18-39

1916

25K→30K

15.5 - 18.6 mi

Top 38%
×9stories
+181ft-148ft

Overall

10654

Females

2619

F18-39

2619

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

10589

Females

2727

F18-39

2727

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

8625

Females

1999

F18-39

1999

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5714

Females

849

F18-39

849

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6943

Females

1381

F18-39

1381

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

6987

Females

1457

F18-39

1457

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

7229

Females

1659

F18-39

1659

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6694

Females

1522

F18-39

1522

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

9380

Females

2708

F18-39

2708

Passing Analysis

Category:
Athletes Passed
6146
Passed By
312
Net Change
+5834
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15991
5K → 10K96163+898#15991#15093
10K → 15K17810+1781#15093#13312
15K → 20K9412+939#13312#12373
20K → Half1051+104#12373#12269
Half → 25K48410+474#12269#11795
25K → 30K36385+278#11795#11517
30K → 20M17459+115#11517#11402
20M → 21M21414+200#11402#11202
21M → 35K2441+243#11202#10959
35K → 23M3075+302#10959#10657
23M → 24M1987+191#10657#10466
24M → 40K1817+174#10466#10292
40K → 25.2M974+93#10292#10199
25.2M → Finish9654+42#10199#10157
TOTALS6146312+5834
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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