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BOSTON MARATHON 2025

Nicole Sanders

Bib: 20510•F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 46%
Masters (Masters Women)
#0 / 6759
Top 34%
Division (F40-44)
#0 / 1718
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
7:53/mi
24:28
↑ 97↓ 3451.5%
10K· 6.21 mi
7:53/mi
48:57
↑ 79↓ 1380.4%
15K· 9.32 mi
8:20/mi
1:14:51
↑ 67↓ 78
20K· 12.43 mi
8:17/mi
1:40:35
↑ 106↓ 860.1%
Half· 13.11 mi
8:02/mi
1:46:04
↑ 19↓ 370.5%
25K· 15.53 mi
8:24/mi
2:06:26
↑ 66↓ 880.2%
30K· 18.64 mi
8:41/mi
2:33:25
↑ 181↓ 1480.2%
20M
8:54/mi
2:45:30
↑ 64↓ 500.2%
21M
9:23/mi
2:54:53
↑ 106↓ 241.6%
35K· 21.75 mi
8:35/mi
3:01:18
↑ 17↓ 861.7%
23M
9:16/mi
3:12:54
↑ 23↓ 630.6%
24M
9:12/mi
3:22:06
↓ 821.3%
40K· 24.85 mi
9:02/mi
3:29:49
↓ 200.3%
25.2M
10:38/mi
3:33:29
↑ 13↓ 160.2%
Finish· 26.22 mi
8:34/mi
3:42:13
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:04
Pace8:05 /mi
2nd Half
Distance13.11 mi
Time1:56:09
Pace8:52 /mi
📊Positive Split: 9.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:0724:287:5324:28
7:53
-
10K
6.21 mi11:41:3648:577:5324:29
7:53
0:00
15K
9.32 mi12:07:301:14:518:0225:54
8:20
+0:27
20K
12.43 mi12:33:141:40:358:0625:44
8:17
-0:03
Half
13.11 mi12:38:431:46:048:055:29
8:02
-0:15
25K
15.53 mi12:59:052:06:268:0820:22
8:24
+0:22
30K
18.64 mi13:26:042:33:258:1426:59
8:41
+0:17
20M
20.00 mi13:38:092:45:308:1612:05
8:54
+0:13
21M
21.00 mi13:47:322:54:538:209:23
9:23
+0:29
35K
21.75 mi13:53:573:01:188:206:25
8:35
-0:48
23M
23.00 mi14:05:333:12:548:2311:36
9:16
+0:41
24M
24.00 mi14:14:453:22:068:259:12
9:12
-0:04
40K
24.85 mi14:22:283:29:498:277:43
9:02
-0:10
25.2M
25.20 mi14:26:083:33:298:283:40
10:38
+1:36
Finish
26.22 mi14:34:523:42:138:298:44
8:34
-2:04

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

7:53 /mi

Average Pace

8:29 /mi

Slowest Pace

10:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

54:26

24% of race

Time at Steady Pace

2:06:13

57% of race

Time at Slower Pace

41:34

19% of race

Average Pace: 8:29 /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 mi11:17:0724:287:5324:28
7:53
#15486
10K
6.21 mi11:41:3648:577:5324:29
7:53
#15474
15K
9.32 mi12:07:301:14:518:0225:54
8:20
#16571
20K
12.43 mi12:33:141:40:358:0625:44
8:17
#16636
Half
13.11 mi12:38:431:46:048:055:29
8:02
#16602
25K
15.53 mi12:59:052:06:268:0820:22
8:24
#16570
30K
18.64 mi13:26:042:33:258:1426:59
8:41
#16406
20M
20.00 mi13:38:092:45:308:1612:05
8:54
#16342
21M
21.00 mi13:47:322:54:538:209:23
9:23
#16243
35K
21.75 mi13:53:573:01:188:206:25
8:35
#16213
23M
23.00 mi14:05:333:12:548:2311:36
9:16
#16248
24M
24.00 mi14:14:453:22:068:259:12
9:12
#16345
40K
24.85 mi14:22:283:29:498:277:43
9:02
#16349
25.2M
25.20 mi14:26:083:33:298:283:40
10:38
#16419
Finish
26.22 mi14:34:523:42:138:298:44
8:34
#16417
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi154864827482718301(Top 64%)6491(Top 53%)6491(Top 378%)
10K6.21 mi3.10 mi15474+124820+74820+715543(Top 55%)4859(Top 40%)4859(Top 283%)
15K9.32 mi3.11 mi16571-10975468-6485468-64818301(Top 64%)6491(Top 53%)6491(Top 378%)
20K12.43 mi3.11 mi16636-655523-555523-5516847(Top 59%)5691(Top 47%)5691(Top 331%)
Half13.11 mi0.68 mi16602+345504+195504+1916259(Top 57%)5346(Top 44%)5346(Top 311%)
25K15.53 mi2.42 mi16570+325505-15505-116593(Top 58%)5629(Top 46%)5629(Top 328%)
30K18.64 mi3.11 mi16406+1645474+315474+3115915(Top 56%)5416(Top 44%)5416(Top 315%)
20M20.00 mi1.36 mi16342+645459+155459+1516201(Top 57%)5720(Top 47%)5720(Top 333%)
21M21.00 mi1.00 mi16243+995432+275432+2715566(Top 55%)5491(Top 45%)5491(Top 320%)
35K21.75 mi0.75 mi16213+305439-75439-715966(Top 56%)5757(Top 47%)5757(Top 335%)
23M23.00 mi1.25 mi16248-355493-545493-5417632(Top 62%)6804(Top 56%)6804(Top 396%)
24M24.00 mi1.00 mi16345-975573-805573-8018361(Top 65%)7226(Top 59%)7226(Top 421%)
40K24.85 mi0.85 mi16349-45607-345607-3416471(Top 58%)6294(Top 51%)6294(Top 366%)
25.2M25.20 mi0.35 mi16419-705652-455652-4519498(Top 69%)7885(Top 64%)7885(Top 459%)
Finish26.22 mi1.02 mi16417+25679-275679-2716690(Top 59%)6395(Top 52%)6395(Top 372%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

18301

Females

6491

F40-44

6491

5K→10K

3.1 - 6.2 mi

Top 55%
×5story building
+79ft-138ft

Overall

15543

Females

4859

F40-44

4859

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

18301

Females

6491

F40-44

6491

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

16847

Females

5691

F40-44

5691

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

16259

Females

5346

F40-44

5346

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

16593

Females

5629

F40-44

5629

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

15915

Females

5416

F40-44

5416

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

16201

Females

5720

F40-44

5720

20M→21M

20.0 - 21.0 mi

Top 55%
×8story building
+106ft-24ft

Overall

15566

Females

5491

F40-44

5491

21M→35K

21.0 - 21.8 mi

Top 56%
×7story building
+17ft-86ft

Overall

15966

Females

5757

F40-44

5757

35K→23M

21.8 - 23.0 mi

Top 62%
×5story building
+23ft-63ft

Overall

17632

Females

6804

F40-44

6804

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

18361

Females

7226

F40-44

7226

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16471

Females

6294

F40-44

6294

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19498

Females

7885

F40-44

7885

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

16690

Females

6395

F40-44

6395

Passing Analysis

Category:
Athletes Passed
1742
Passed By
2673
Net Change
-931
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15486
5K → 10K318306+12#15486#15474
10K → 15K261123-1097#15474#16571
15K → 20K191256-65#16571#16636
20K → Half5218+34#16636#16602
Half → 25K173141+32#16602#16570
25K → 30K306142+164#16570#16406
30K → 20M13773+64#16406#16342
20M → 21M15051+99#16342#16243
21M → 35K8050+30#16243#16213
35K → 23M100135-35#16213#16248
23M → 24M54151-97#16248#16345
24M → 40K6872-4#16345#16349
40K → 25.2M979-70#16349#16419
25.2M → Finish7876+2#16419#16417
TOTALS17422673-931
📊

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