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BOSTON MARATHON 2025

Allie Nerenberg

Bib: 17234•F

VT

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 40%
Gender (Female)
#0 / 12228
Top 24%
Masters (Masters Women)
#0 / 6759
Top 10%
Division (F40-44)
#0 / 1718
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
7:34/mi
23:30
↑ 97↓ 3451.5%
10K· 6.21 mi
7:30/mi
46:49
↑ 79↓ 1380.4%
15K· 9.32 mi
7:28/mi
1:10:02
↑ 67↓ 78
20K· 12.43 mi
7:33/mi
1:33:28
↑ 106↓ 860.1%
Half· 13.11 mi
7:24/mi
1:38:31
↑ 19↓ 370.5%
25K· 15.53 mi
7:40/mi
1:57:07
↑ 66↓ 880.2%
30K· 18.64 mi
8:01/mi
2:22:00
↑ 181↓ 1480.2%
20M
8:15/mi
2:33:13
↑ 64↓ 500.2%
21M
8:46/mi
2:41:59
↑ 106↓ 241.6%
35K· 21.75 mi
7:45/mi
2:47:47
↑ 17↓ 861.7%
23M
8:14/mi
2:58:06
↑ 23↓ 630.6%
24M
7:55/mi
3:06:01
↓ 821.3%
40K· 24.85 mi
8:15/mi
3:13:04
↓ 200.3%
25.2M
8:42/mi
3:16:04
↑ 13↓ 160.2%
Finish· 26.22 mi
7:30/mi
3:23:43
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:31
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:45:12
Pace8:01 /mi
📊Positive Split: 6.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:4723:307:3423:30
7:34
-
10K
6.21 mi11:37:0646:497:3223:19
7:30
-0:04
15K
9.32 mi12:00:191:10:027:3123:13
7:28
-0:02
20K
12.43 mi12:23:451:33:287:3123:26
7:33
+0:05
Half
13.11 mi12:28:481:38:317:315:03
7:24
-0:09
25K
15.53 mi12:47:241:57:077:3218:36
7:40
+0:16
30K
18.64 mi13:12:172:22:007:3724:53
8:01
+0:21
20M
20.00 mi13:23:302:33:137:4011:13
8:15
+0:14
21M
21.00 mi13:32:162:41:597:438:46
8:46
+0:31
35K
21.75 mi13:38:042:47:477:435:48
7:45
-1:01
23M
23.00 mi13:48:232:58:067:4510:19
8:14
+0:29
24M
24.00 mi13:56:183:06:017:457:55
7:55
-0:19
40K
24.85 mi14:03:213:13:047:467:03
8:15
+0:20
25.2M
25.20 mi14:06:213:16:047:473:00
8:42
+0:27
Finish
26.22 mi14:14:003:23:437:477:39
7:30
-1:12

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

7:24 /mi

Average Pace

7:47 /mi

Slowest Pace

8:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:22

80% of race

Time at Steady Pace

31:35

16% of race

Time at Slower Pace

8:46

4% of race

Average Pace: 7:46 /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 mi11:13:4723:307:3423:30
7:34
#12804
10K
6.21 mi11:37:0646:497:3223:19
7:30
#12446
15K
9.32 mi12:00:191:10:027:3123:13
7:28
#12115
20K
12.43 mi12:23:451:33:287:3123:26
7:33
#11818
Half
13.11 mi12:28:481:38:317:315:03
7:24
#11764
25K
15.53 mi12:47:241:57:077:3218:36
7:40
#11668
30K
18.64 mi13:12:172:22:007:3724:53
8:01
#11570
20M
20.00 mi13:23:302:33:137:4011:13
8:15
#11558
21M
21.00 mi13:32:162:41:597:438:46
8:46
#11596
35K
21.75 mi13:38:042:47:477:435:48
7:45
#11540
23M
23.00 mi13:48:232:58:067:4510:19
8:14
#11498
24M
24.00 mi13:56:183:06:017:457:55
7:55
#11425
40K
24.85 mi14:03:213:13:047:467:03
8:15
#11422
25.2M
25.20 mi14:06:213:16:047:473:00
8:42
#11362
Finish
26.22 mi14:14:003:23:437:477:39
7:30
#11248
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi128043209320911548(Top 41%)2664(Top 22%)2664(Top 155%)
10K6.21 mi3.10 mi12446+3583036+1733036+17312158(Top 43%)2902(Top 24%)2902(Top 169%)
15K9.32 mi3.11 mi12115+3312901+1352901+13511548(Top 41%)2664(Top 22%)2664(Top 155%)
20K12.43 mi3.11 mi11818+2972772+1292772+12911124(Top 39%)2543(Top 21%)2543(Top 148%)
Half13.11 mi0.68 mi11764+542752+202752+2010978(Top 39%)2420(Top 20%)2420(Top 141%)
25K15.53 mi2.42 mi11668+962739+132739+1311336(Top 40%)2764(Top 23%)2764(Top 161%)
30K18.64 mi3.11 mi11570+982770-312770-3111449(Top 40%)3004(Top 25%)3004(Top 175%)
20M20.00 mi1.36 mi11558+122803-332803-3312184(Top 43%)3534(Top 29%)3534(Top 206%)
21M21.00 mi1.00 mi11596-382865-622865-6212104(Top 43%)3649(Top 30%)3649(Top 212%)
35K21.75 mi0.75 mi11540+562859+62859+610505(Top 37%)2856(Top 23%)2856(Top 166%)
23M23.00 mi1.25 mi11498+422881-222881-2211657(Top 41%)3555(Top 29%)3555(Top 207%)
24M24.00 mi1.00 mi11425+732874+72874+710693(Top 38%)3134(Top 26%)3134(Top 182%)
40K24.85 mi0.85 mi11422+32917-432917-4311845(Top 42%)3832(Top 31%)3832(Top 223%)
25.2M25.20 mi0.35 mi11362+602903+142903+1410067(Top 35%)3054(Top 25%)3054(Top 178%)
Finish26.22 mi1.02 mi11248+1142884+192884+199271(Top 33%)2658(Top 22%)2658(Top 155%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21story building
+97ft-345ft

Overall

11548

Females

2664

F40-44

2664

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

12158

Females

2902

F40-44

2902

10K→15K

6.2 - 9.3 mi

Top 41%
×3story building
+67ft-78ft

Overall

11548

Females

2664

F40-44

2664

15K→20K

9.3 - 12.4 mi

Top 39%
×5story building
+106ft-86ft

Overall

11124

Females

2543

F40-44

2543

20K→Half

12.4 - 13.1 mi

Top 39%
×2story building
+19ft-37ft

Overall

10978

Females

2420

F40-44

2420

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

11336

Females

2764

F40-44

2764

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

11449

Females

3004

F40-44

3004

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

12184

Females

3534

F40-44

3534

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

12104

Females

3649

F40-44

3649

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

10505

Females

2856

F40-44

2856

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

11657

Females

3555

F40-44

3555

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

10693

Females

3134

F40-44

3134

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11845

Females

3832

F40-44

3832

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

10067

Females

3054

F40-44

3054

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

9271

Females

2658

F40-44

2658

Passing Analysis

Category:
Athletes Passed
2610
Passed By
1054
Net Change
+1556
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12804
5K → 10K495137+358#12804#12446
10K → 15K38756+331#12446#12115
15K → 20K35558+297#12115#11818
20K → Half628+54#11818#11764
Half → 25K203107+96#11764#11668
25K → 30K272174+98#11668#11570
30K → 20M123111+12#11570#11558
20M → 21M97135-38#11558#11596
21M → 35K7822+56#11596#11540
35K → 23M12583+42#11540#11498
23M → 24M12047+73#11498#11425
24M → 40K8380+3#11425#11422
40K → 25.2M677+60#11422#11362
25.2M → Finish14329+114#11362#11248
TOTALS26101054+1556
📊

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