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BOSTON MARATHON 2025

Gretel Amsler

Bib: 20014•F

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 11%
Division (F50-54)
#0 / 1303
Top 5%
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
24:30
↑ 97↓ 3451.5%
10K· 6.21 mi
7:47/mi
48:40
↑ 79↓ 1380.4%
15K· 9.32 mi
7:43/mi
1:12:40
↑ 67↓ 78
20K· 12.43 mi
7:46/mi
1:36:49
↑ 106↓ 860.1%
Half· 13.11 mi
7:37/mi
1:42:01
↑ 19↓ 370.5%
25K· 15.53 mi
7:41/mi
2:00:39
↑ 66↓ 880.2%
30K· 18.64 mi
7:57/mi
2:25:22
↑ 181↓ 1480.2%
20M
7:58/mi
2:36:11
↑ 64↓ 500.2%
21M
8:33/mi
2:44:44
↑ 106↓ 241.6%
35K· 21.75 mi
7:37/mi
2:50:26
↑ 17↓ 861.7%
23M
7:46/mi
3:00:09
↑ 23↓ 630.6%
24M
7:28/mi
3:07:37
↓ 821.3%
40K· 24.85 mi
7:36/mi
3:14:07
↓ 200.3%
25.2M
8:30/mi
3:17:03
↑ 13↓ 160.2%
Finish· 26.22 mi
7:08/mi
3:24:19
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:42:01
Pace7:47 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:42:18
Pace7:48 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:5224:307:5324:30
7:53
-
10K
6.21 mi11:40:0248:407:5024:10
7:47
-0:06
15K
9.32 mi12:04:021:12:407:4824:00
7:43
-0:04
20K
12.43 mi12:28:111:36:497:4724:09
7:46
+0:03
Half
13.11 mi12:33:231:42:017:475:12
7:37
-0:09
25K
15.53 mi12:52:012:00:397:4618:38
7:41
+0:04
30K
18.64 mi13:16:442:25:227:4824:43
7:57
+0:16
20M
20.00 mi13:27:332:36:117:4910:49
7:58
+0:01
21M
21.00 mi13:36:062:44:447:518:33
8:33
+0:35
35K
21.75 mi13:41:482:50:267:505:42
7:37
-0:56
23M
23.00 mi13:51:313:00:097:509:43
7:46
+0:09
24M
24.00 mi13:58:593:07:377:497:28
7:28
-0:18
40K
24.85 mi14:05:293:14:077:496:30
7:36
+0:08
25.2M
25.20 mi14:08:253:17:037:492:56
8:30
+0:54
Finish
26.22 mi14:15:413:24:197:487:16
7:08
-1:22

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

7:08 /mi

Average Pace

7:48 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:12:48

65% of race

Time at Steady Pace

1:00:02

29% of race

Time at Slower Pace

11:29

6% of race

Average Pace: 7:48 /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 mi11:15:5224:307:5324:30
7:53
#15550
10K
6.21 mi11:40:0248:407:5024:10
7:47
#15073
15K
9.32 mi12:04:021:12:407:4824:00
7:43
#14592
20K
12.43 mi12:28:111:36:497:4724:09
7:46
#14175
Half
13.11 mi12:33:231:42:017:475:12
7:37
#14099
25K
15.53 mi12:52:012:00:397:4618:38
7:41
#13595
30K
18.64 mi13:16:442:25:227:4824:43
7:57
#13066
20M
20.00 mi13:27:332:36:117:4910:49
7:58
#12809
21M
21.00 mi13:36:062:44:447:518:33
8:33
#12652
35K
21.75 mi13:41:482:50:267:505:42
7:37
#12514
23M
23.00 mi13:51:313:00:097:509:43
7:46
#12236
24M
24.00 mi13:58:593:07:377:497:28
7:28
#11983
40K
24.85 mi14:05:293:14:077:496:30
7:36
#11774
25.2M
25.20 mi14:08:253:17:037:492:56
8:30
#11714
Finish
26.22 mi14:15:413:24:197:487:16
7:08
#11448
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi155504857485713741(Top 48%)3859(Top 32%)3859(Top 296%)
10K6.21 mi3.10 mi15073+4774583+2744583+27414625(Top 51%)4319(Top 35%)4319(Top 331%)
15K9.32 mi3.11 mi14592+4814306+2774306+27713741(Top 48%)3859(Top 32%)3859(Top 296%)
20K12.43 mi3.11 mi14175+4174106+2004106+20013052(Top 46%)3575(Top 29%)3575(Top 274%)
Half13.11 mi0.68 mi14099+764060+464060+4612789(Top 45%)3368(Top 28%)3368(Top 258%)
25K15.53 mi2.42 mi13595+5043814+2463814+24611448(Top 40%)2821(Top 23%)2821(Top 217%)
30K18.64 mi3.11 mi13066+5293590+2243590+22411077(Top 39%)2828(Top 23%)2828(Top 217%)
20M20.00 mi1.36 mi12809+2573471+1193471+11910205(Top 36%)2542(Top 21%)2542(Top 195%)
21M21.00 mi1.00 mi12652+1573420+513420+5110822(Top 38%)3009(Top 25%)3009(Top 231%)
35K21.75 mi0.75 mi12514+1383370+503370+509529(Top 34%)2384(Top 19%)2384(Top 183%)
23M23.00 mi1.25 mi12236+2783263+1073263+1078352(Top 29%)1981(Top 16%)1981(Top 152%)
24M24.00 mi1.00 mi11983+2533163+1003163+1007515(Top 26%)1683(Top 14%)1683(Top 129%)
40K24.85 mi0.85 mi11774+2093087+763087+767487(Top 26%)1765(Top 14%)1765(Top 135%)
25.2M25.20 mi0.35 mi11714+603069+183069+188908(Top 31%)2492(Top 20%)2492(Top 191%)
Finish26.22 mi1.02 mi11448+2662978+912978+916628(Top 23%)1514(Top 12%)1514(Top 116%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21story building
+97ft-345ft

Overall

13741

Females

3859

F50-54

3859

5K→10K

3.1 - 6.2 mi

Top 51%
×5story building
+79ft-138ft

Overall

14625

Females

4319

F50-54

4319

10K→15K

6.2 - 9.3 mi

Top 48%
×3story building
+67ft-78ft

Overall

13741

Females

3859

F50-54

3859

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

13052

Females

3575

F50-54

3575

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

12789

Females

3368

F50-54

3368

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

11448

Females

2821

F50-54

2821

25K→30K

15.5 - 18.6 mi

Top 39%
×9story building
+181ft-148ft

Overall

11077

Females

2828

F50-54

2828

30K→20M

18.6 - 20.0 mi

Top 36%
×5story building
+64ft-50ft

Overall

10205

Females

2542

F50-54

2542

20M→21M

20.0 - 21.0 mi

Top 38%
×8story building
+106ft-24ft

Overall

10822

Females

3009

F50-54

3009

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

9529

Females

2384

F50-54

2384

35K→23M

21.8 - 23.0 mi

Top 29%
×5story building
+23ft-63ft

Overall

8352

Females

1981

F50-54

1981

23M→24M

23.0 - 24.0 mi

Top 26%
×6story building
+12ft-82ft

Overall

7515

Females

1683

F50-54

1683

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7487

Females

1765

F50-54

1765

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8908

Females

2492

F50-54

2492

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2story building
+22ft-21ft

Overall

6628

Females

1514

F50-54

1514

Passing Analysis

Category:
Athletes Passed
4421
Passed By
319
Net Change
+4102
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15550
5K → 10K602125+477#15550#15073
10K → 15K51938+481#15073#14592
15K → 20K44629+417#14592#14175
20K → Half859+76#14175#14099
Half → 25K5073+504#14099#13595
25K → 30K56738+529#13595#13066
30K → 20M2669+257#13066#12809
20M → 21M19336+157#12809#12652
21M → 35K1446+138#12652#12514
35K → 23M2824+278#12514#12236
23M → 24M2552+253#12236#11983
24M → 40K2156+209#11983#11774
40K → 25.2M7010+60#11774#11714
25.2M → Finish2704+266#11714#11448
TOTALS4421319+4102
📊

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