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BOSTON MARATHON 2025

Trudy Shellenbarger

Bib: 9821•F

OH

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 29%
Gender (Female)
#0 / 12228
Top 12%
Division (F18-39)
#0 / 5469
Top 22%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:05/mi
22:00
↑ 97↓ 3451.5%
10K· 6.21 mi
7:01/mi
43:48
↑ 79↓ 1380.4%
15K· 9.32 mi
7:06/mi
1:05:50
↑ 67↓ 78
20K· 12.43 mi
7:08/mi
1:27:59
↑ 106↓ 860.1%
Half· 13.11 mi
7:05/mi
1:32:49
↑ 19↓ 370.5%
25K· 15.53 mi
7:16/mi
1:50:27
↑ 66↓ 880.2%
30K· 18.64 mi
7:44/mi
2:14:28
↑ 181↓ 1480.2%
20M
7:54/mi
2:25:12
↑ 64↓ 500.2%
21M
8:10/mi
2:33:22
↑ 106↓ 241.6%
35K· 21.75 mi
7:46/mi
2:39:11
↑ 17↓ 861.7%
23M
8:00/mi
2:49:12
↑ 23↓ 630.6%
24M
7:50/mi
2:57:02
↓ 821.3%
40K· 24.85 mi
7:51/mi
3:03:45
↓ 200.3%
25.2M
8:25/mi
3:06:39
↑ 13↓ 160.2%
Finish· 26.22 mi
7:14/mi
3:14:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:49
Pace7:05 /mi
2nd Half
Distance13.11 mi
Time1:41:12
Pace7:43 /mi
📊Positive Split: 9.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:0422:007:0522:00
7:05
-
10K
6.21 mi11:09:5243:487:0321:48
7:01
-0:04
15K
9.32 mi11:31:541:05:507:0422:02
7:06
+0:05
20K
12.43 mi11:54:031:27:597:0522:09
7:08
+0:02
Half
13.11 mi11:58:531:32:497:054:50
7:05
-0:03
25K
15.53 mi12:16:311:50:277:0717:38
7:16
+0:11
30K
18.64 mi12:40:322:14:287:1324:01
7:44
+0:28
20M
20.00 mi12:51:162:25:127:1610:44
7:54
+0:10
21M
21.00 mi12:59:262:33:227:188:10
8:10
+0:16
35K
21.75 mi13:05:152:39:117:195:49
7:46
-0:24
23M
23.00 mi13:15:162:49:127:2110:01
8:00
+0:14
24M
24.00 mi13:23:062:57:027:237:50
7:50
-0:10
40K
24.85 mi13:29:493:03:457:246:43
7:51
+0:01
25.2M
25.20 mi13:32:433:06:397:242:54
8:25
+0:34
Finish
26.22 mi13:40:053:14:017:247:22
7:14
-1:11

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

7:01 /mi

Average Pace

7:24 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:49

61% of race

Time at Steady Pace

1:13:18

38% of race

Time at Slower Pace

2:54

1% of race

Average Pace: 7:24 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:48:0422:007:0522:00
7:05
#8489
10K
6.21 mi11:09:5243:487:0321:48
7:01
#8254
15K
9.32 mi11:31:541:05:507:0422:02
7:06
#8232
20K
12.43 mi11:54:031:27:597:0522:09
7:08
#8039
Half
13.11 mi11:58:531:32:497:054:50
7:05
#8033
25K
15.53 mi12:16:311:50:277:0717:38
7:16
#7988
30K
18.64 mi12:40:322:14:287:1324:01
7:44
#8138
20M
20.00 mi12:51:162:25:127:1610:44
7:54
#8224
21M
21.00 mi12:59:262:33:227:188:10
8:10
#8165
35K
21.75 mi13:05:152:39:117:195:49
7:46
#8227
23M
23.00 mi13:15:162:49:127:2110:01
8:00
#8278
24M
24.00 mi13:23:062:57:027:237:50
7:50
#8306
40K
24.85 mi13:29:493:03:457:246:43
7:51
#8304
25.2M
25.20 mi13:32:433:06:397:242:54
8:25
#8283
Finish
26.22 mi13:40:053:14:017:247:22
7:14
#8225
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8489115911598297(Top 29%)1158(Top 9%)1158(Top 21%)
10K6.21 mi3.10 mi8254+2351091+681091+688048(Top 28%)1027(Top 8%)1027(Top 19%)
15K9.32 mi3.11 mi8232+221090+11090+18297(Top 29%)1158(Top 9%)1158(Top 21%)
20K12.43 mi3.11 mi8039+1931039+511039+517702(Top 27%)1006(Top 8%)1006(Top 18%)
Half13.11 mi0.68 mi8033+61038+11038+18251(Top 29%)1189(Top 10%)1189(Top 22%)
25K15.53 mi2.42 mi7988+451050-121050-128171(Top 29%)1287(Top 11%)1287(Top 24%)
30K18.64 mi3.11 mi8138-1501164-1141164-1149411(Top 33%)2005(Top 16%)2005(Top 37%)
20M20.00 mi1.36 mi8224-861221-571221-579732(Top 34%)2308(Top 19%)2308(Top 42%)
21M21.00 mi1.00 mi8165+591233-121233-128395(Top 30%)1891(Top 15%)1891(Top 35%)
35K21.75 mi0.75 mi8227-621278-451278-4510633(Top 37%)2904(Top 24%)2904(Top 53%)
23M23.00 mi1.25 mi8278-511344-661344-6610036(Top 35%)2748(Top 22%)2748(Top 50%)
24M24.00 mi1.00 mi8306-281388-441388-4410063(Top 35%)2827(Top 23%)2827(Top 52%)
40K24.85 mi0.85 mi8304+21425-371425-379193(Top 32%)2537(Top 21%)2537(Top 46%)
25.2M25.20 mi0.35 mi8283+211431-61431-68296(Top 29%)2176(Top 18%)2176(Top 40%)
Finish26.22 mi1.02 mi8225+581446-151446-157247(Top 26%)1746(Top 14%)1746(Top 32%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21story building
+97ft-345ft

Overall

8297

Females

1158

F18-39

1158

5K→10K

3.1 - 6.2 mi

Top 28%
×5story building
+79ft-138ft

Overall

8048

Females

1027

F18-39

1027

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+67ft-78ft

Overall

8297

Females

1158

F18-39

1158

15K→20K

9.3 - 12.4 mi

Top 27%
×5story building
+106ft-86ft

Overall

7702

Females

1006

F18-39

1006

20K→Half

12.4 - 13.1 mi

Top 29%
×2story building
+19ft-37ft

Overall

8251

Females

1189

F18-39

1189

Half→25K

13.1 - 15.5 mi

Top 29%
×4story building
+66ft-88ft

Overall

8171

Females

1287

F18-39

1287

25K→30K

15.5 - 18.6 mi

Top 33%
×9story building
+181ft-148ft

Overall

9411

Females

2005

F18-39

2005

30K→20M

18.6 - 20.0 mi

Top 34%
×5story building
+64ft-50ft

Overall

9732

Females

2308

F18-39

2308

20M→21M

20.0 - 21.0 mi

Top 30%
×8story building
+106ft-24ft

Overall

8395

Females

1891

F18-39

1891

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

10633

Females

2904

F18-39

2904

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

10036

Females

2748

F18-39

2748

23M→24M

23.0 - 24.0 mi

Top 35%
×6story building
+12ft-82ft

Overall

10063

Females

2827

F18-39

2827

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

9193

Females

2537

F18-39

2537

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

8296

Females

2176

F18-39

2176

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2story building
+22ft-21ft

Overall

7247

Females

1746

F18-39

1746

Passing Analysis

Category:
Athletes Passed
1706
Passed By
1442
Net Change
+264
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8489
5K → 10K359124+235#8489#8254
10K → 15K159137+22#8254#8232
15K → 20K24754+193#8232#8039
20K → Half2822+6#8039#8033
Half → 25K148103+45#8033#7988
25K → 30K139289-150#7988#8138
30K → 20M84170-86#8138#8224
20M → 21M12061+59#8224#8165
21M → 35K45107-62#8165#8227
35K → 23M92143-51#8227#8278
23M → 24M74102-28#8278#8306
24M → 40K7472+2#8306#8304
40K → 25.2M3716+21#8304#8283
25.2M → Finish10042+58#8283#8225
TOTALS17061442+264
📊

Passing Visuals

Category:
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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