Boston Marathon logo
BOSTON MARATHON 2025

Chiara Lesa

Bib: 22490 F IT

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 39%
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:41/mi
23:52
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:40/mi
47:42
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:54/mi
1:12:14
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:06/mi
1:37:24
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:59/mi
1:42:51
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:13/mi
2:02:47
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:41/mi
2:29:47
↑ 181↓ 1480.2%
138 ft elev
20M
8:45/mi
2:41:41
↑ 64↓ 500.2%
148 ft elev
21M
9:25/mi
2:51:06
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:19/mi
2:57:19
↑ 17↓ 861.7%
156 ft elev
23M
8:50/mi
3:08:23
↑ 23↓ 630.6%
116 ft elev
24M
8:38/mi
3:17:01
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:42/mi
3:24:27
↓ 200.3%
20 ft elev
25.2M
9:17/mi
3:27:39
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:10/mi
3:35:58
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Is this your race?

Claim it for a free AI report on this race

A one-of-a-kind AI Race Performance Report that reads your race like a coach. A plain-English story of how you raced, where you surged and faded, and what it all means. Emailed to you, free.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:51
Pace7:51 /mi
2nd Half
Distance13.11 mi
Time1:53:07
Pace8:38 /mi
📊Positive Split: 10.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:5423:527:4123:52
7:41
-
10K
6.21 mi12:09:4447:427:4123:50
7:40
-0:01
15K
9.32 mi12:34:161:12:147:4524:32
7:54
+0:14
20K
12.43 mi12:59:261:37:247:5025:10
8:06
+0:12
Half
13.11 mi13:04:531:42:517:515:27
7:59
-0:07
25K
15.53 mi13:24:492:02:477:5419:56
8:13
+0:14
30K
18.64 mi13:51:492:29:478:0227:00
8:41
+0:28
20M
20.00 mi14:03:432:41:418:0511:54
8:45
+0:04
21M
21.00 mi14:13:082:51:068:099:25
9:25
+0:40
35K
21.75 mi14:19:212:57:198:096:13
8:19
-1:06
23M
23.00 mi14:30:253:08:238:1111:04
8:50
+0:31
24M
24.00 mi14:39:033:17:018:138:38
8:38
-0:12
40K
24.85 mi14:46:293:24:278:147:26
8:42
+0:04
25.2M
25.20 mi14:49:413:27:398:143:12
9:17
+0:35
Finish
26.22 mi14:58:003:35:588:158:19
8:10
-1:07

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

7:40 /mi

Average Pace

8:15 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:17:41

36% of race

Time at Steady Pace

59:38

28% of race

Time at Slower Pace

1:18:39

36% of race

Average Pace: 8:14 /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 mi11:45:5423:527:4123:52
7:41
#13831
10K
6.21 mi12:09:4447:427:4123:50
7:40
#13736
15K
9.32 mi12:34:161:12:147:4524:32
7:54
#14199
20K
12.43 mi12:59:261:37:247:5025:10
8:06
#14568
Half
13.11 mi13:04:531:42:517:515:27
7:59
#14627
25K
15.53 mi13:24:492:02:477:5419:56
8:13
#14754
30K
18.64 mi13:51:492:29:478:0227:00
8:41
#15005
20M
20.00 mi14:03:432:41:418:0511:54
8:45
#15019
21M
21.00 mi14:13:082:51:068:099:25
9:25
#15010
35K
21.75 mi14:19:212:57:198:096:13
8:19
#14976
23M
23.00 mi14:30:253:08:238:1111:04
8:50
#14953
24M
24.00 mi14:39:033:17:018:138:38
8:38
#14943
40K
24.85 mi14:46:293:24:278:147:26
8:42
#14921
25.2M
25.20 mi14:49:413:27:398:143:12
9:17
#14881
Finish
26.22 mi14:58:003:35:588:158:19
8:10
#14827
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi138313798379815227(Top 54%)4708(Top 39%)4708(Top 86%)
10K6.21 mi3.10 mi13736+953788+103788+1013651(Top 48%)3754(Top 31%)3754(Top 69%)
15K9.32 mi3.11 mi14199-4634088-3004088-30015227(Top 54%)4708(Top 39%)4708(Top 86%)
20K12.43 mi3.11 mi14568-3694328-2404328-24015649(Top 55%)5004(Top 41%)5004(Top 91%)
Half13.11 mi0.68 mi14627-594366-384366-3815841(Top 56%)5076(Top 42%)5076(Top 93%)
25K15.53 mi2.42 mi14754-1274476-1104476-11015448(Top 54%)4982(Top 41%)4982(Top 91%)
30K18.64 mi3.11 mi15005-2514673-1974673-19715948(Top 56%)5430(Top 44%)5430(Top 99%)
20M20.00 mi1.36 mi15019-144714-414714-4115429(Top 54%)5279(Top 43%)5279(Top 97%)
21M21.00 mi1.00 mi15010+94728-144728-1415714(Top 55%)5554(Top 45%)5554(Top 102%)
35K21.75 mi0.75 mi14976+344724+44724+414340(Top 50%)4871(Top 40%)4871(Top 89%)
23M23.00 mi1.25 mi14953+234740-164740-1615331(Top 54%)5505(Top 45%)5505(Top 101%)
24M24.00 mi1.00 mi14943+104773-334773-3315367(Top 54%)5578(Top 46%)5578(Top 102%)
40K24.85 mi0.85 mi14921+224785-124785-1214594(Top 51%)5293(Top 43%)5293(Top 97%)
25.2M25.20 mi0.35 mi14881+404772+134772+1313409(Top 47%)4718(Top 39%)4718(Top 86%)
Finish26.22 mi1.02 mi14827+544773-14773-114038(Top 49%)4969(Top 41%)4969(Top 91%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15227

Females

4708

F18-39

4708

5K→10K

3.1 - 6.2 mi

Top 48%
×5story building
+79ft-138ft

Overall

13651

Females

3754

F18-39

3754

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15227

Females

4708

F18-39

4708

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

15649

Females

5004

F18-39

5004

20K→Half

12.4 - 13.1 mi

Top 56%
×2story building
+19ft-37ft

Overall

15841

Females

5076

F18-39

5076

Half→25K

13.1 - 15.5 mi

Top 54%
×4story building
+66ft-88ft

Overall

15448

Females

4982

F18-39

4982

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

15948

Females

5430

F18-39

5430

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

15429

Females

5279

F18-39

5279

20M→21M

20.0 - 21.0 mi

Top 55%
×8story building
+106ft-24ft

Overall

15714

Females

5554

F18-39

5554

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

14340

Females

4871

F18-39

4871

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

15331

Females

5505

F18-39

5505

23M→24M

23.0 - 24.0 mi

Top 54%
×6story building
+12ft-82ft

Overall

15367

Females

5578

F18-39

5578

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

14594

Females

5293

F18-39

5293

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

13409

Females

4718

F18-39

4718

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

14038

Females

4969

F18-39

4969

Passing Analysis

Category:
Athletes Passed
1610
Passed By
2606
Net Change
-996
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13831
5K → 10K327232+95#13831#13736
10K → 15K76539-463#13736#14199
15K → 20K105474-369#14199#14568
20K → Half2685-59#14568#14627
Half → 25K139266-127#14627#14754
25K → 30K171422-251#14754#15005
30K → 20M126140-14#15005#15019
20M → 21M123114+9#15019#15010
21M → 35K7036+34#15010#14976
35K → 23M127104+23#14976#14953
23M → 24M8474+10#14953#14943
24M → 40K7553+22#14943#14921
40K → 25.2M6020+40#14921#14881
25.2M → Finish10147+54#14881#14827
TOTALS16102606-996
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing