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BOSTON MARATHON 2025

Nicole Sims

Bib: 27890•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 36%
Masters (Masters Women)
#0 / 6759
Top 22%
Division (F45-49)
#0 / 1813
Top 25%
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
8:08/mi
25:16
↑ 97↓ 3451.5%
10K· 6.21 mi
8:01/mi
50:10
↑ 79↓ 1380.4%
15K· 9.32 mi
8:01/mi
1:15:03
↑ 67↓ 78
20K· 12.43 mi
8:01/mi
1:39:58
↑ 106↓ 860.1%
Half· 13.11 mi
7:53/mi
1:45:21
↑ 19↓ 370.5%
25K· 15.53 mi
8:02/mi
2:04:49
↑ 66↓ 880.2%
30K· 18.64 mi
8:16/mi
2:30:29
↑ 181↓ 1480.2%
20M
8:28/mi
2:41:59
↑ 64↓ 500.2%
21M
8:50/mi
2:50:49
↑ 106↓ 241.6%
35K· 21.75 mi
8:15/mi
2:56:59
↑ 17↓ 861.7%
23M
8:14/mi
3:07:17
↑ 23↓ 630.6%
24M
8:13/mi
3:15:30
↓ 821.3%
40K· 24.85 mi
8:15/mi
3:22:33
↓ 200.3%
25.2M
8:56/mi
3:25:38
↑ 13↓ 160.2%
Finish· 26.22 mi
7:59/mi
3:33:46
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:21
Pace8:02 /mi
2nd Half
Distance13.11 mi
Time1:48:25
Pace8:16 /mi
📊Positive Split: 2.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:4325:168:0825:16
8:08
-
10K
6.21 mi12:06:3750:108:0424:54
8:01
-0:07
15K
9.32 mi12:31:301:15:038:0324:53
8:01
0:00
20K
12.43 mi12:56:251:39:588:0324:55
8:01
0:00
Half
13.11 mi13:01:481:45:218:025:23
7:53
-0:08
25K
15.53 mi13:21:162:04:498:0219:28
8:02
+0:09
30K
18.64 mi13:46:562:30:298:0425:40
8:16
+0:14
20M
20.00 mi13:58:262:41:598:0611:30
8:28
+0:12
21M
21.00 mi14:07:162:50:498:088:50
8:50
+0:22
35K
21.75 mi14:13:262:56:598:086:10
8:15
-0:35
23M
23.00 mi14:23:443:07:178:0910:18
8:14
-0:01
24M
24.00 mi14:31:573:15:308:098:13
8:13
-0:01
40K
24.85 mi14:39:003:22:338:097:03
8:15
+0:02
25.2M
25.20 mi14:42:053:25:388:103:05
8:56
+0:41
Finish
26.22 mi14:50:133:33:468:108:08
7:59
-0:57

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

8:10 /mi

Slowest Pace

8:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:21:51

94% of race

Time at Steady Pace

11:55

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:09 /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 mi11:41:4325:168:0825:16
8:08
#17597
10K
6.21 mi12:06:3750:108:0424:54
8:01
#17058
15K
9.32 mi12:31:301:15:038:0324:53
8:01
#16718
20K
12.43 mi12:56:251:39:588:0324:55
8:01
#16276
Half
13.11 mi13:01:481:45:218:025:23
7:53
#16204
25K
15.53 mi13:21:162:04:498:0219:28
8:02
#15845
30K
18.64 mi13:46:562:30:298:0425:40
8:16
#15298
20M
20.00 mi13:58:262:41:598:0611:30
8:28
#15134
21M
21.00 mi14:07:162:50:498:088:50
8:50
#14911
35K
21.75 mi14:13:262:56:598:086:10
8:15
#14852
23M
23.00 mi14:23:443:07:178:0910:18
8:14
#14622
24M
24.00 mi14:31:573:15:308:098:13
8:13
#14520
40K
24.85 mi14:39:003:22:338:097:03
8:15
#14380
25.2M
25.20 mi14:42:053:25:388:103:05
8:56
#14329
Finish
26.22 mi14:50:133:33:468:108:08
7:59
#14231
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi175976090609016117(Top 57%)5208(Top 43%)5208(Top 287%)
10K6.21 mi3.10 mi17058+5395758+3325758+33216593(Top 58%)5473(Top 45%)5473(Top 302%)
15K9.32 mi3.11 mi16718+3405557+2015557+20116117(Top 57%)5208(Top 43%)5208(Top 287%)
20K12.43 mi3.11 mi16276+4425310+2475310+24715089(Top 53%)4687(Top 38%)4687(Top 259%)
Half13.11 mi0.68 mi16204+725275+355275+3515056(Top 53%)4639(Top 38%)4639(Top 256%)
25K15.53 mi2.42 mi15845+3595080+1955080+19514144(Top 50%)4278(Top 35%)4278(Top 236%)
30K18.64 mi3.11 mi15298+5474820+2604820+26013257(Top 47%)3978(Top 33%)3978(Top 219%)
20M20.00 mi1.36 mi15134+1644779+414779+4113559(Top 48%)4276(Top 35%)4276(Top 236%)
21M21.00 mi1.00 mi14911+2234671+1084671+10812553(Top 44%)3900(Top 32%)3900(Top 215%)
35K21.75 mi0.75 mi14852+594650+214650+2113927(Top 49%)4639(Top 38%)4639(Top 256%)
23M23.00 mi1.25 mi14622+2304558+924558+9211571(Top 41%)3526(Top 29%)3526(Top 194%)
24M24.00 mi1.00 mi14520+1024524+344524+3412724(Top 45%)4179(Top 34%)4179(Top 231%)
40K24.85 mi0.85 mi14380+1404484+404484+4011878(Top 42%)3865(Top 32%)3865(Top 213%)
25.2M25.20 mi0.35 mi14329+514468+164468+1611554(Top 41%)3791(Top 31%)3791(Top 209%)
Finish26.22 mi1.02 mi14231+984439+294439+2912782(Top 45%)4325(Top 35%)4325(Top 239%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

16117

Females

5208

F45-49

5208

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

16593

Females

5473

F45-49

5473

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

16117

Females

5208

F45-49

5208

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

15089

Females

4687

F45-49

4687

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

15056

Females

4639

F45-49

4639

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

14144

Females

4278

F45-49

4278

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

13257

Females

3978

F45-49

3978

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

13559

Females

4276

F45-49

4276

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

12553

Females

3900

F45-49

3900

21M→35K

21.0 - 21.8 mi

Top 49%
×7story building
+17ft-86ft

Overall

13927

Females

4639

F45-49

4639

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

11571

Females

3526

F45-49

3526

23M→24M

23.0 - 24.0 mi

Top 45%
×6story building
+12ft-82ft

Overall

12724

Females

4179

F45-49

4179

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11878

Females

3865

F45-49

3865

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

11554

Females

3791

F45-49

3791

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

12782

Females

4325

F45-49

4325

Passing Analysis

Category:
Athletes Passed
3816
Passed By
450
Net Change
+3366
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17597
5K → 10K648109+539#17597#17058
10K → 15K40565+340#17058#16718
15K → 20K47836+442#16718#16276
20K → Half764+72#16276#16204
Half → 25K38122+359#16204#15845
25K → 30K57730+547#15845#15298
30K → 20M20137+164#15298#15134
20M → 21M24522+223#15134#14911
21M → 35K8829+59#14911#14852
35K → 23M24616+230#14852#14622
23M → 24M12624+102#14622#14520
24M → 40K15414+140#14520#14380
40K → 25.2M587+51#14380#14329
25.2M → Finish13335+98#14329#14231
TOTALS3816450+3366
📊

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