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BOSTON MARATHON 2025

Izzy Hemington

Bib: 12661•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 39%
Gender (Female)
#0 / 12228
Top 23%
Division (F18-39)
#0 / 5469
Top 39%
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
7:18/mi
22:41
↑ 97↓ 3451.5%
10K· 6.21 mi
7:18/mi
45:22
↑ 79↓ 1380.4%
15K· 9.32 mi
8:04/mi
1:10:26
↑ 67↓ 78
20K· 12.43 mi
7:19/mi
1:33:11
↑ 106↓ 860.1%
Half· 13.11 mi
7:18/mi
1:38:10
↑ 19↓ 370.5%
25K· 15.53 mi
7:34/mi
1:56:30
↑ 66↓ 880.2%
30K· 18.64 mi
7:47/mi
2:20:40
↑ 181↓ 1480.2%
20M
7:47/mi
2:31:14
↑ 64↓ 500.2%
21M
8:19/mi
2:39:33
↑ 106↓ 241.6%
35K· 21.75 mi
9:36/mi
2:46:44
↑ 17↓ 861.7%
23M
8:38/mi
2:57:33
↑ 23↓ 630.6%
24M
8:14/mi
3:05:47
↓ 821.3%
40K· 24.85 mi
7:56/mi
3:12:34
↓ 200.3%
25.2M
8:36/mi
3:15:32
↑ 13↓ 160.2%
Finish· 26.22 mi
7:32/mi
3:23:13
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:10
Pace7:29 /mi
2nd Half
Distance13.11 mi
Time1:45:03
Pace8:01 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0922:417:1822:41
7:18
-
10K
6.21 mi11:13:5045:227:1822:41
7:18
0:00
15K
9.32 mi11:38:541:10:267:3325:04
8:04
+0:46
20K
12.43 mi12:01:391:33:117:3022:45
7:19
-0:45
Half
13.11 mi12:06:381:38:107:294:59
7:18
-0:01
25K
15.53 mi12:24:581:56:307:3018:20
7:34
+0:16
30K
18.64 mi12:49:082:20:407:3324:10
7:47
+0:13
20M
20.00 mi12:59:422:31:147:3410:34
7:47
0:00
21M
21.00 mi13:08:012:39:337:368:19
8:19
+0:32
35K
21.75 mi13:15:122:46:447:407:11
9:36
+1:17
23M
23.00 mi13:26:012:57:337:4310:49
8:38
-0:58
24M
24.00 mi13:34:153:05:477:448:14
8:14
-0:24
40K
24.85 mi13:41:023:12:347:456:47
7:56
-0:18
25.2M
25.20 mi13:44:003:15:327:462:58
8:36
+0:40
Finish
26.22 mi13:51:413:23:137:457:41
7:32
-1:04

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

7:18 /mi

Average Pace

7:45 /mi

Slowest Pace

9:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:13:06

36% of race

Time at Steady Pace

1:32:36

46% of race

Time at Slower Pace

37:31

18% of race

Average Pace: 7:45 /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 mi10:51:0922:417:1822:41
7:18
#10397
10K
6.21 mi11:13:5045:227:1822:41
7:18
#10351
15K
9.32 mi11:38:541:10:267:3325:04
8:04
#12488
20K
12.43 mi12:01:391:33:117:3022:45
7:19
#11617
Half
13.11 mi12:06:381:38:107:294:59
7:18
#11538
25K
15.53 mi12:24:581:56:307:3018:20
7:34
#11330
30K
18.64 mi12:49:082:20:407:3324:10
7:47
#10997
20M
20.00 mi12:59:422:31:147:3410:34
7:47
#10785
21M
21.00 mi13:08:012:39:337:368:19
8:19
#10662
35K
21.75 mi13:15:122:46:447:407:11
9:36
#11136
23M
23.00 mi13:26:012:57:337:4310:49
8:38
#11306
24M
24.00 mi13:34:153:05:477:448:14
8:14
#11335
40K
24.85 mi13:41:023:12:347:456:47
7:56
#11238
25.2M
25.20 mi13:44:003:15:327:462:58
8:36
#11189
Finish
26.22 mi13:51:413:23:137:457:41
7:32
#11096
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi103971991199116539(Top 58%)5461(Top 45%)5461(Top 100%)
10K6.21 mi3.10 mi10351+461981+101981+1010371(Top 37%)1999(Top 16%)1999(Top 37%)
15K9.32 mi3.11 mi12488-21373097-11163097-111616539(Top 58%)5461(Top 45%)5461(Top 100%)
20K12.43 mi3.11 mi11617+8712672+4252672+4259245(Top 33%)1632(Top 13%)1632(Top 30%)
Half13.11 mi0.68 mi11538+792632+402632+4010136(Top 36%)2042(Top 17%)2042(Top 37%)
25K15.53 mi2.42 mi11330+2082553+792553+7910461(Top 37%)2313(Top 19%)2313(Top 42%)
30K18.64 mi3.11 mi10997+3332470+832470+839791(Top 34%)2193(Top 18%)2193(Top 40%)
20M20.00 mi1.36 mi10785+2122402+682402+688912(Top 31%)1951(Top 16%)1951(Top 36%)
21M21.00 mi1.00 mi10662+1232375+272375+279362(Top 33%)2321(Top 19%)2321(Top 42%)
35K21.75 mi0.75 mi11136-4742643-2682643-26820691(Top 73%)8337(Top 68%)8337(Top 152%)
23M23.00 mi1.25 mi11306-1702776-1332776-13314185(Top 50%)4888(Top 40%)4888(Top 89%)
24M24.00 mi1.00 mi11335-292832-562832-5612809(Top 45%)4209(Top 34%)4209(Top 77%)
40K24.85 mi0.85 mi11238+972815+172815+179733(Top 34%)2792(Top 23%)2792(Top 51%)
25.2M25.20 mi0.35 mi11189+492807+82807+89505(Top 33%)2782(Top 23%)2782(Top 51%)
Finish26.22 mi1.02 mi11096+932797+102797+109515(Top 33%)2770(Top 23%)2770(Top 51%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21story building
+97ft-345ft

Overall

16539

Females

5461

F18-39

5461

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

10371

Females

1999

F18-39

1999

10K→15K

6.2 - 9.3 mi

Top 58%
×3story building
+67ft-78ft

Overall

16539

Females

5461

F18-39

5461

15K→20K

9.3 - 12.4 mi

Top 33%
×5story building
+106ft-86ft

Overall

9245

Females

1632

F18-39

1632

20K→Half

12.4 - 13.1 mi

Top 36%
×2story building
+19ft-37ft

Overall

10136

Females

2042

F18-39

2042

Half→25K

13.1 - 15.5 mi

Top 37%
×4story building
+66ft-88ft

Overall

10461

Females

2313

F18-39

2313

25K→30K

15.5 - 18.6 mi

Top 34%
×9story building
+181ft-148ft

Overall

9791

Females

2193

F18-39

2193

30K→20M

18.6 - 20.0 mi

Top 31%
×5story building
+64ft-50ft

Overall

8912

Females

1951

F18-39

1951

20M→21M

20.0 - 21.0 mi

Top 33%
×8story building
+106ft-24ft

Overall

9362

Females

2321

F18-39

2321

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

20691

Females

8337

F18-39

8337

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

14185

Females

4888

F18-39

4888

23M→24M

23.0 - 24.0 mi

Top 45%
×6story building
+12ft-82ft

Overall

12809

Females

4209

F18-39

4209

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9733

Females

2792

F18-39

2792

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

9505

Females

2782

F18-39

2782

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

9515

Females

2770

F18-39

2770

Passing Analysis

Category:
Athletes Passed
2751
Passed By
3450
Net Change
-699
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10397
5K → 10K277231+46#10397#10351
10K → 15K82145-2137#10351#12488
15K → 20K8732+871#12488#11617
20K → Half823+79#11617#11538
Half → 25K26153+208#11538#11330
25K → 30K41077+333#11330#10997
30K → 20M23422+212#10997#10785
20M → 21M15835+123#10785#10662
21M → 35K4478-474#10662#11136
35K → 23M65235-170#11136#11306
23M → 24M74103-29#11306#11335
24M → 40K12023+97#11335#11238
40K → 25.2M6112+49#11238#11189
25.2M → Finish12431+93#11189#11096
TOTALS27513450-699
📊

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